Tuesday, December 30, 2008

Must see JQuery Example - amazing

jQuery Air - A passenger management interface for charter flights. A great Tutorial that you will enjoy.

Sunday, December 28, 2008

ASP.NET MVC Linklist

Justin Etheredge: How To Guarantee That Your Software Will Suck

Justin Etheredge wrote an article: How To Guarantee That Your Software Will Suck

here is an overview:

1) Don't give your developers the tools they need to do their jobs.
2) Just jump right in, plans are for chumps.
3) Set strict deadlines on projects that will take "tens of thousands of man hours".
4) Spend hundreds of hours writing ridiculously detailed documentation.
5) Refuse to buy them more than one monitor.
6) Buy cheap hardware.
7) Keep asking them to multi-task.
8) Write everything yourself.
9) Expect your developers to sit quietly in front of their computer 8 hours a day.
10) Purchase tools without consulting those who will have to use them.

some of the points i absolutely agree with :-)

Sunday, December 21, 2008

Visual Studio Team System 2008 Team Foundation Server Power Tools Explorer Extensions

I'm not a 100% sure but I think this is getting installed with Visual Studio Team System 2008 Team Foundation Server Power Tools:

Especially I like the comparsion with workspace version :-)

TFS - Customizing Process Template's - especially iterations!

I don't know how much hours I spent over the last few day's with TFS (Team Foundation Server) and the configuration around it. I can't understand why Microsoft is making this so hard while alternative products of Microsoft are easy for installation and handling (e.g. Visual Studio / SQL Server / any many more.....)

Let's talk about customizing TFS process templates. You don't need to but I strongly suggest you download the "Visual Studio Team System 2008 Team Foundation Server Power Tools". Once you have installed Visual Studio 2008 Team Foundation Server Power Tools you have a additional menu items below Tools->Process Editor.
Before you launch this you will have to download one of the provided Process Templates:

  • MSF for Agile Software Development - v.4.2
  • MSF for CMMI Process Improvement - v.4.2

To download a Process Templates you will have to choose from the menu: Template Process Manager

Choose your location on your drive and select "Save".

The output will saved as the following Print Screen display:

Now you can go back to your Visual Studio Menu and select: Tools->Process Editor
and select the File ProcessTemplate.xml on your disc.

You gone be surprised what you gone see !!!! At least I was it.

As long as you don't change anything within the iterations it should work when you make your changes save the file and upload it again over the Process Template Manager. But in case you are doing CHANGES AT ITERATIONS you gone face problems upon creating task when you try to add a new TFS Project Wizards.

The error you gone see in your TeamProjectCreation log file looks like this:
---begin Exception entry---
Time: 2008-12-21 14:09:12ZModule: Work Item TrackingEvent Description: TF26214: Cannot save the work item. Fields with errors: Iteration Path;IterationIDException Type: Microsoft.TeamFoundation.WorkItemTracking.Client.ValidationExceptionException Message: TF26202: Iteration Path is not a valid area or iteration path. In the Team menu, click Team Project Settings, and then click Areas and Iterations to review the valid area and iteration paths.Stack Trace: at Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItem.PreValidate() at Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItem.PreBatchSave() at Microsoft.TeamFoundation.WorkItemTracking.Client.BatchSaveHelper.BatchSave(WorkItem[] items)
--- end Exception entry ---

How do you handle this.

  1. Close your Process Template Manager
  2. Navigate to your Location on the disc where you have saved your Process Template and from there you navigate to the folder: Work Item Tracking
  3. Open the file: workitems.xml
  4. Now you have to replace all "$$PROJECTNAME$$\Iteration 0" with the iteration you have created, in my case it is:
  5. Upload and overwrite your Custom Process Template and you will be able to create your new project.

I hope VSTS is going to put a lot of efforts to make all this stuff much easier!

XHTML & List of HTML/CSS Services

Some links around XHTML / CSS Services on the web:

Prices are between 150 USD up to 700 USD

Friday, December 19, 2008

TFS, Reporting Server & Sharepoint

I have spoken over the last few weeks with a lot of people about Team Foundation Server / Reporting Services and Sharepoint WSS 3.0.

Microsoft have tried to do all efforts to create a very detailed installation help how to install TFS in all various modes but my personal conclusion is if I see how much people are running around the forums - why the hell they are not able to make one simple Next -> Next installer which will at least cover the basic mode and one for the distributed mode.

If you think how much hours the industry have spent on installing TFS and how much money this cost then it would make sense to me.

The next thing which I don't really like about TFS is the underdevelopment of maintenance tools. You have to grab everything together and more then that with all the hours TFS group people spending on the forums they could create amazing administration tools which would make much easier to the industry.

What are my expectations? Well I work daily hours over hours with Visual Studio and SQL Server Management Studio, why they make those fancy and amazing Tools but they are not able to manage it to develop such a tool within TFS - sad!

I life like the rest of the community in the hope that they gone invest for the next version some time for that stuff.

Wednesday, December 17, 2008

TFS, Reporting Server & Sharepoint

Does your interface complain about IReportViewerMessage? I searched whole-over my web.config files to identify and finally I found it in my Sharepoint Server web.config file:

I didn't do much else then to comment this line and tried to run it again. Ohh good, the good thing is:

  • Everything worked as expected
  • No errors are getting displayed on the websites or Event Log

The bad thing is:

  • Why the hell this happens?

Since 3 day's i haven't experienced any difficulties with this solution but who knows when it ill come.

MSBuild and MVC - does not work?

After I have added my sample MVC Solution to TFS I configured my build client to run a daily build. Challanges at this step:

- Issue: I missed to configure the Build Machine Port 9191

- how to solve: Open firewall and configure port 9191

Once I was able to connect to the build client from TFS when I queued a new build it failed. After googling a while i found a lot of people they had the same problem to build automatically mvc. the good thing is: "I'm not alone with building MVC applications with MSBuild"!

- Issue: Targets are not defined, but what the hell are those targets?

- how to solve:

- Step 1: Navigate at your development machine to the following location:

"C:\Program Files\MSBuild\Microsoft\VisualStudio\v9.0”

- Step 2: everything within this folder i have copied to my build client at the same location.

- Step 3: i downloaded MVC from http://www.asp.net/mvc again on my build client and installed it.

- Step 4: Added a new Build in my Visual Studio and it succeeded :-)

Thursday, December 11, 2008

Easly reading RSS Feeds or ATOM Feeds with System.ServiceModel.Syndication in C# with .net 3.0

Less code lines are almoast not possible! But one leak is available; the load method always download the full items and there is no option only to download item headers.

The formatted version is also available at my website: http://www.ronischuetz.com/code/reading_rss_atom_feeds.html

using System;












class Program


static void Main(string[] args)


DateTime start
= DateTime.Now;

List<string> urls = new List<string>();



(var item in urls)





TimeSpan d
= DateTime.Now - start;




private static int counter = 0;

private static void
Reader(string url)


SyndicationFeed blogFeed
= null;



// Read the feed using an XmlReader

using (XmlReader reader = XmlReader.Create(url))


// Load the feed into a SyndicationFeed

blogFeed = SyndicationFeed.Load(reader);



catch (Exception ex)


if (ex is WebException ex is XmlException)


// Handle bad url, timeout or xml error here.

Console.WriteLine("Handle bad url, timeout or xml error here: " + ex.Message);



Console.WriteLine("second case: " + ex.Message);


// Use the feed

foreach (SyndicationItem item in blogFeed.Items)


Console.WriteLine((++counter) +
" " + item.Title.Text);





Monday, December 01, 2008

Intersting approach: Protecting images on the net

It is disheartening to read how images shown on the internet can be taken and used by others. Is there a way of displaying images so that they cannot be downloaded?

Checkout the following link for more information: http://www.guardian.co.uk/technology/askjack/2008/nov/27/protecting-photos

Getting Started with the ASP.NET 3.5 Chart Control

The new Chart control can generate charts without a lot of work on your partDan Wahlin (Microsoft Most Valuable Professional for ASP.NET and XML Web Services) is a .NET development instructor and architecture consultant at Interface Technical Training. Dan founded the XML for ASP.NET Developers site, which focuses on using ASP.NET, XML, Silverlight, AJAX, and Web Services on .NET and runs smartwebcontrols.com. Dan has co-authored/authored several different books on .NET, including ASP.NET 2.0 MVP Hacks, Professional ASP.NET AJAX, XML for ASP.NET Developers and is currently working on a new book on Silverlight 2. Dan blogs at http://weblogs.asp.net/dwahlin.

checkout the following link for more info: http://www.ddj.com/windows/212200721

Sunday, November 09, 2008

WebMonitor - simple and free

The main purpose of the WebMonitor application, is to be able to have an easy and simpel way to monitor your server/host through HTTP. You run the application from your desktop and get notifications if on of you monitors act abnormal. This can mean a ruled has failed, ex. you have set the monitor of CodePlex.com to have an MaxResponse time to 500 ms. If the reponse time exceeds this value, an balloonTip will show you that something is up.


Monday, November 03, 2008

Live Services - Live Framework

The Live Framework is the uniform way for programming Live Services from a variety of platforms, programming languages, applications and devices. Consume and combine Live Services to build applications that span across digital devices and the web.
Learn more and understand the benefits of programming Live Services with the Live Framework.

Its available here: http://dev.live.com/liveframework/

Saturday, November 01, 2008

Using Panel.DefaultButton property with LinkButton control in ASP.NET

ASP.NET has great limitation — only one server form on the page. Even if you are developing complex page, which looks like several forms with different submit buttons, in fact you have only one form. So we have a problem: How browser understanding which button should be triggered when user pressed ENTER? It uses first Button control (usually that’s wrong), and if you have LinkButton’s, they would never be triggered. In ASP.NET 2.0 new property has been added to the Panel and HtmlForm controls — DefaultButton, which can be used to specify ID of the control, which implements IButtonControl interface (usually Button and LinkButton). This button control would be triggered when user pressed ENTER. But there is one big problem exist: LinkButton control would not be triggered in Firefox on ENTER. In this article I will show why this problem take place and how to solve.

Read the solution at Dmytro's Blog: Using Panel.DefaultButton property with LinkButton control in ASP.NET

Thursday, October 30, 2008

.NET Reflector 5.0

Reflector is a class browser for .NET components. It allows browsing and searching the meta data, IL instructions, resources and XML documentation stored in a .NET assembly. Reflector was first released in October 2000 running on .NET Framework 1.0 Beta.

LINQ and .NET Framework 3.5: Reflector supports query expressions and other concepts introduced in C# 3.5. To enable this feature select “.NET 3.5″ under View, Options, Disassembler, Optimization.
.NET Framework compatibility: Reflector runs on all versions of the .NET Framework using its own assembly loading infrastructure which does not rely on the Reflection API. For example, Reflector can load .NET Framework 2.0 assemblies without having the .NET Framework 2.0 installed.
Assembly Lists: When launched for the first time, Reflector allows you to choose a default set of assemblies. The list of assemblies is then stored in the Reflector.cfg file and will be loaded next time you open the program. Reflector allows creating multiple assembly lists and switching between the lists using the File, Open List dialog. To choose a different set of default assemblies for the current assembly list you should remove all assemblies from the list (DEL) and invoke the Refresh command (F5).

Assembly Cache: When resolving an assembly reference, Reflector will first search the local path next to the assembly holding the reference and then falls back to the cache directories defined in the Reflector.cfg file. Reflector does not search the Global Assembly Cache (GAC) unless you add “%SystemRoot%\Assembly” to the cache directories list.
Assembly Versioning: By default, assembly version numbers are ignored when resolving type and member references. You can enable side-by-side versioning in the options dialog but it is suggested to avoid this if possible.

Add-Ins: Information about the Reflector add-in model can be found here.

Tuesday, October 28, 2008

Microsoft Project Code Named “Velocity” CTP2

“Velocity” is a distributed in-memory application cache platform for developing scalable, high-performance applications. “Velocity” can be used to cache any common language runtime (CLR) object and provides access through simple APIs. The key aspects of “Velocity” are distributed cache performance, scalabily, and availability.

Microsoft Download Link

Related Resources
“Velocity” Team Blog
“Velocity” Code Samples
Microsoft project code named “Velocity” Homepage
“Velocity” Documentation on MSDN

soon I try to make some comparsions between velocity and shared cache.

Monday, October 27, 2008

ajax status display like google apps

during cleanup of my files i found the following Javascript status display js class.

unfortunately i don't know from where i have downloaded it, so if you know let me know that I can update this entry and add a link to the owner.

var ajaxStatus = Class.create();
ajaxStatus.prototype = {
ajaxStatusDisplayUserMessageElementID: 'ajaxStatusDisplay_userMessage',
ajaxStatusContainerID: 'ajaxStatusContainer',
ajaxStatusContainerCssClass: 'ajaxStatusDisplay_userStyle',
userDefinedAjaxStatusContainerCssClass: false,
ajaxStatusMessageContainerID: 'ajaxStatusMessageContainer',
ajaxStatusMessageContainerCssClass: 'ajaxStatusDisplay_userMessageStyle',
userDefinedAjaxStatusMessageContainerCssClass: false,
useUserCssStylesContainerID: 'ajaxStatusDisplay_useUserCssStyles',
statusMessage: 'Loading...',
useUserCssStyles: false,
Function: initialize
Description: Creates the hidden status display elements and configures
the default status message and css styles
initialize: function() {
// Create the ajax status container
new Element('div', {
id: this.ajaxStatusContainerID,
style: 'display: none'

// Create the ajax status message container
new Element('div', {
id: this.ajaxStatusMessageContainerID

// Setup the css styles

// Setup the status message text

// Register the global Ajax responders
// to show hide the status container
onCreate: this.toggle.bindAsEventListener(this),
onComplete: this.toggle.bindAsEventListener(this)
setCssStyles: function() {
// If the user has defined styles
if (document.styleSheets.length > 0) {
var theRules = new Array();

// If this is Firefox or other W3C complient browser
if (document.styleSheets[0].cssRules) {
theRules = document.styleSheets[0].cssRules;
// If this is IE
else if (document.styleSheets[0].rules) {
theRules = document.styleSheets[0].rules;

// Loop over the css rules
for (i = 0; i < theRules.length; i++) {
// If the current rule matches the name of the ajax status container css class
if (theRules[i].selectorText == '.' + this.ajaxStatusContainerCssClass) {
this.userDefinedAjaxStatusContainerCssClass = true;
// If the current rule matches the name of the ajax status message container css class
else if (theRules[i].selectorText == '.' + this.ajaxStatusMessageContainerCssClass) {
this.userDefinedAjaxStatusMessageContainerCssClass = true;

// If the user definfed css styles with the specific name
// for the ajax status container
if (this.userDefinedAjaxStatusContainerCssClass) {
// Set css class name for the container
else {
// The user has not defined the custom css style class
// so apply default style
position: 'absolute',
left: '45%',
top: '2px',
height: '10px'

// If the user definfed css styles with the specific name
// for the ajax status message container
if (this.userDefinedAjaxStatusMessageContainerCssClass) {
else {
// The user has not defined the custom css style class
// so apply default style
background: '#FFF1A8 none repeat scroll 0%',
color: '#000',
padding: '0pt 5px',
fontFamily: 'Arial, Helvetica, sans-serif',
fontSize: '14px',
fontWeight: 'bold',
textAlign: 'center',
width: '100%'
setStatusMessage: function(statusMessage) {
if (!statusMessage.empty()) {
this.statusMessage = statusMessage;
else {
// If there is an element on the page with a user defined status message
if ($(this.ajaxStatusDisplayUserMessageElementID)) {
// If the user's status message is inside a input element
if ($(this.ajaxStatusDisplayUserMessageElementID).readAttribute('value') != null) {
// Use the value of the input element
// for the display as the status
this.statusMessage = $F(this.ajaxStatusDisplayUserMessageElementID);
else {
// Use the value of the element for the display as the status
this.statusMessage = $(this.ajaxStatusDisplayUserMessageElementID).innerHTML;

// Hide the user's status message container

toggle: function() {

document.observe("dom:loaded", function() {
// Create an instance of the object defined above
ajaxStatusDisplay = new ajaxStatus();

Wednesday, October 22, 2008

Monday, October 20, 2008

Backup and Restore Database for SQL Server

@echo off
@echo BatchJob Start
@echo %date% %time% %0 Start >> ".\!Log\all.log"
@echo on

"Start backup database DISK='%cd%\ABC.bak'" >> ".\!Log\all.log"
osql /E /S localhost /Q "backup database DISK='%cd%\ABC.bak'"
"c:\Program Files\WinRAR\winrar" a ABC.rar erp.bak -df -ibck
"Done backup database DISK='%cd%\ABC.bak'" >> ".\!Log\all.log"


"Start restore database DISK='%cd%\ABC.bak'" >> ".\!Log\all.log"
osql /E /Q "restore database ERP from DISK='%cd%\ABC.bak'"
"Done restore database DISK='%cd%\ABC.bak'" >> ".\!Log\all.log"

@echo off
@echo %date% %time% %0 End >> ".\!Log\all.log"

Sunday, October 19, 2008

C# Cross-Thread Operations made easy

Starting with .Net Framework 2.0 and higher, it's a must to write cross-thread operations.

Cross-thread operations in C# are calls on the method that attempts to access an object that was created in a different thread.

Lets say we would like to load data into a DropDown Control from a Background thread we will receive the following error:

Cross-thread operation not valid: Control 'Abc' accessed from a thread other than the thread it was created on.

We can solve this by using simple delegate and the attribute InvokeRequired. Lets look on 2 samples how to succeed with this once with and once without a parameter:

   1:  private delegate void DelegateManageLink(string url, bool isEmail);


   3:  private void ManageLink(string url, bool isEmail)

   4:  {

   5:      if (this.InvokeRequired)

   6:      {

   7:          DelegateManageLink inv = new DelegateManageLink(this.ManageLink);

   8:          this.Invoke(inv, new object[] { url, isEmail });

   9:      }

  10:      else

  11:      {

  12:          if (!string.IsNullOrEmpty(url))

  13:          {

  14:              string tmp = (isEmail == true ? "mailto:" : "") + url;

  15:              System.Diagnostics.Process.Start(tmp);

  16:          }

  17:      }

  18:  }

Sample without parameter:

   1:  /// <summary>

   2:  /// A delegate method to invoke a method and prevent threading concurrent access

   3:  /// </summary>

   4:  private delegate void DelegateCheckServerVersions();

   5:  private void CheckServerVersions()

   6:  {

   7:      if (this.InvokeRequired)

   8:      {

   9:          DelegateCheckServerVersions inv = new DelegateCheckServerVersions(this.CheckServerVersions);

  10:          this.Invoke(inv, new object[] { });

  11:      }

  12:      else

  13:      {

  14:          // your stuff goes here ..

  15:      }

  16:  }

Saturday, October 18, 2008

Googel Analytics - Traffic Sources

Since http://www.cuil.com/ is online I could see in my analytics profile much visits with the source cuil.com. In Google Analytics is an traffic overview for "Search Engines" and I'm asking myself why Google Analytics does not display "cuil.com" also as "Search Engine". Instead of that is cuil.com listed below "All Traffic Sources".

Who know's why Google is doing that?

ORM (Object Relational Mapper) - what is available

Once you get familiar with ORM's you will "Love or Hate" the idea.

For a new project I write I decided to use once more an ORM Tool. There are so many ORM's outside there and because I develop it only in .Net C# and I love the idea for open source I decided I only go for an open source object relational mapper.

Microsoft comes out with some stuff called "Linq to SQL" and "Entity Framework". I could find lot of information about it but in the end I could NOT find a really working solution which is based on a n-tier architecture. Since my point of view is that applications are also applications which are based on different tiers or models I'm not satisfied with this "0815 / drag & drop" Microsoft solutions which are done in 5 minutes.

An application has to be divided into various tiers. Lets say it simple:
- Data Access Layer
- Business Object Layer
- Presentation Layer

if you need more well done but I prefer a clean architecture instead of one Website Project which contains a mix of anything. Can be that for other people it is good enough. Anyway, enough about my personal point of view.

Following criteria are important to me:

  • Perspective on Performance
  • Perspective on Data-source independence - access various data-sources SQL Server, OBDC etc.
  • Perspective on Lazy Load of parent entities
  • Perspective on Pluggable Creation Mechanism
  • Perspective on Separation Of Tiers And Layering Preferences
  • Perspective on Transactions Control
  • Perspective on Mapping (1:1, 1:N, N:M)
  • Perspective on Query Facilities
After many hours of researching, downloads, testings and clarifications I come up with the following list which could be interesting. Please note the notes beside are my personal point of views and does not need to match anything other opinion.

Notice: if you have an actual ORM mapper which is not listed above post them please (Only Open Source Projects please and no shareware - comments with links to shareware application will not be approved!!).

Wednesday, October 15, 2008

Problems with Asp.Net ProfileCommon class?

I wanted to use built in provided profile provider which is shipped with ASP.Net. I created a Web Application Project (WAP) and figured out that ProfileCommon file is not generated anymore automatically as it has been done in previous visual studio project solution templates.

After quite a while of researching I understood that this seems to be a common problem - it's not worth to write a fully custom provider only for some profile specific settings.

The good issue is - I'm not alone with this problem.

The better thing is - it has been already solved by a project which is available on code.msdn.microsoft.com: Web Profile Builder - thanks to robolize to come up with this solution and sharing it with us.

Saturday, October 11, 2008

Evaldas Jocys: Globalization Resources for Multilanguage Development


This article contains MUST HAVE tables and data for proper multi language development. I highly recommend to use ISO (International Organizations for Standardization) as primary source of information, because this is the only way to go for high quality products and compatibility. Please remember that ISO usually only manages standards. Behind each ISO standard there are companies which supplies databases and updates to commercial users. Internet is also good source of information so I've collected globalization data from various resources and placed into 6 tables. If you have some suggestions then please contact me by email: Evaldas Jocys <evaldas@jocys.com>
Data for these tables are required to produce full multilingual support:

  • Languages - information about all languages.
  • Cultures - information about all cultures (Language + Country).
  • Encodings - information about all encodings.
  • Ranges - can help to get customer's culture by IP.
  • Currencies - business information about each country.
  • Currencies by Country- currencies used in country.

it would be very intersting to combine this with the following:

ASP.NET 2.0 Custom SQL Server Resource

ProviderBy Jeff Modzel

jQuery.com and Microsoft .Net

I think you have read and heard already about a javascript framework called: jQuery this js framework seems to grow and grow ... almost endless. Since Microsoft (Scott Guthrie http://weblogs.asp.net/scottgu/archive/2008/09/28/jquery-and-microsoft.aspx) announced they gone integrate this framework into Visual Studio they decided finally a takeover a community project into their environment instead to develop something new from scratch. My personal point of view, this is the right decision and they should do this with more projects.

Friday, October 10, 2008

Trivia - Chaostriva.com

do you like trivia? well I do and found finally a multiplayer trivia game - try this out: http://www.chaostrivia.com/

enjoy and lets play

would be funny to create a quiz about .net, web or anything related to development.

SGML Reader - convert HTML to XHTML

This is a web - based implementation of converting HTML to well-formed XHTML using a solution which could be found in the past at the following location:
There is one problem with this location, Microsoft closed gotdotnet.com so I decided to upload my adapted version. Maybe somebody knows how is the creator of this library so I can add this here.

You can download it from here: www.ronischuetz.com/download/sgmlreader.zip

dictonary serializable

after some researches how to serialize dictonary in .net I found the following solutions:

only XML serialization: http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx

inclusive Binary serialization: http://blogs.microsoft.co.il/blogs/applisec/archive/2008/02/23/serializable-dictionary.aspx

scuba diving - red see eilat, israel

I been for 2 weeks in eilat, israel were I did my scuba diving PADI divemaster certification. Enjoy some pictures from my apprenticeship and some fundives ....

isn't like an aquarium :-)

Wednesday, September 10, 2008

New Personal Website

I uploaded a new website, let me know what you think about: http://www.ronischuetz.com

LogParser SQL Statemts for IIS Log files

I uploaded some LogParser SQL Statements for IIS Log files.

with a simple batch job you able to execute all queries at once:

Download: http://www.ronischuetz.com/code/LogParserSqlScripts.zip

The Difference Between Piping and Polling

Jeff Standen explains about "The Difference Between Piping and Polling"

Piping (a.k.a. Pushing)
With the piping method, e-mail is delivered to an application in real-time at the cost of server resources and redundant application overhead.
It’s fast. E-mail is delivered to the helpdesk proactively and in real-time.
It’s modular. The relatively expensive operations required to convert a raw MIME e-mail message into plaintext with usable file attachments can be offloaded to a speedy, specialized application. In previous versions of Cerberus Helpdesk, e-mail processing was handled by a parser written in the “C” programming language.
It doesn’t scale well. Each new message is processed concurrently, each costing the overhead of the application starting up, initializing resources, processing, and then shutting down between each handled message.
It can bounce/blackhole messages. Since mail is delivered in real-time, the mail server is generally looking for an immediate clear-cut success or failure response code from an application. That means if you’re upgrading, tweaking, rebooting, or otherwise taking your helpdesk offline for a few minutes, new mail is bouncing for later retry. That’s normal behavior. However, if your helpdesk is accessible but in a broken state (e.g. halfway through an upgrade, having database issues) then it’s possible for mail to be accepted but not processed.

Saturday, August 30, 2008

GetHashCode() have been changed

As its written in MSDN (http://msdn.microsoft.com/en-us/library/system.string.gethashcode.aspx):
The behavior of GetHashCode is dependent on its implementation, which might change from one version of the common language run-time to another. A reason why this might happen is to improve the performance of GetHashCode.

In the following versions exactly this happens:

  • 2.0.50727.3053

  • 2.0.50727.1433

Let's say you like to do something for load-balancing based on the following code:

return Math.Abs((key.GetHashCode() % serverAmount));

it will return a different server node in case of shared cache. To handle this issue we have added 2 things, first of all is an alternative hashing algorithm and second we check the run-time between clients and server and inform clients about it in case this happens.

If you are using a version of shared cache which is below you need to keep all your systems up-to-date with the same CLR version or you decide to use a different hashing algorithm for your system. Within our notifier program you can check this quite easily.

To use following options you will firstly need to register, the registration can be done during installation or afterwards within a new option within menu context of SharedCache.com Notify application.

  • Check if all environments are using same CLR

  • A Test to check if you able to use all Hashing Algorithms

  • Get Informed if your environment is using same version of shared cache, this is mostly important to grant all communication options between clients and caching nodes on your servers.

for more information about hashing algorithms which are supported by shared cache visit my website: http://www.sharedcache.com/ - or go directly to http://www.sharedcache.com/cms/shared_cache_notify.aspx

Friday, August 29, 2008

LINQ to SQL Serialization

Use the Generics, Extension and Reflection features to implement a generic serialization class library for LINQ to SQL classes



Tuesday, August 26, 2008

Build a Web Chat Application using ASP.Net 3.5, LINQ and AJAX (in C# 3.5)

Junnark Vicencio explains how to build a chat application within 2 hours.

Technologies Used: ASP.Net 3.5, AJAX, JavaScript, C# 3.5, LINQ-to-SQL, MS SQL Server 2000/2005


Thursday, August 14, 2008

Check if server is available before you make requests

I had to implement a fallback system in case one of my primary servers is not available anymore because of any reason. There were no option to access servers over a loadbalancer or something else then a direct routing to each server.

After some compassion's how much time I gone waste for each request between usage of sockets or HttpWebRequest / WebRequest I decided to work directly with Sockets.

The implementation I decided to go for were quite easy (remember: keep it simple as possible) and its fast like hell - 9ms I'm loosing each check if the server is available or not. We use 2 servers - so I have to remember that there is a total of 18ms I'm loosing each time we have a running cycle to analyse data. In general my tests gave showed me that 5 of the 9 ms are used for DNS.GetHostEntry(ServerName) - if you can use IP-Addresses then I suggest to do it that way. Check out one of my previous post about this DNS.GetHostEntry(ServerName) - IPAddress.Parse("") vs. Dns.GetHostEntry("")

With those ~20ms we can leave very good because a cycle needs right now something around 2.5min and it can be a max. of 15min. So how to solve this is the question, here the codesample from MSDN which I adapted and using to validate if my servers are online: http://msdn.microsoft.com/en-us/library/system.net.sockets.socket.aspx

Formatted Code is available here: http://www.ronischuetz.com/code/CheckIfServerIsAvailable.htm

   1:      private static bool ConnectSocket(string server, int port)

   2:      {

   3:          Stopwatch sp = new Stopwatch();

   4:          IPHostEntry hostEntry = null;

   5:          bool result = false;

   6:          sp.Start();

   7:          // Get host related information.

   8:          hostEntry = Dns.GetHostEntry(server);

   9:          sp.Stop();

  10:          Log.Info(string.Format("ConnectSocket->Dns.GetHostEntry({0}) needed: {1}ms ",server, sp.ElapsedMilliseconds));

  11:          sp.Reset();


  13:          // Loop through the AddressList to obtain the supported AddressFamily. This is to avoid

  14:          // an exception that occurs when the host IP Address is not compatible with the address family

  15:          // (typical in the IPv6 case).

  16:          foreach (IPAddress address in hostEntry.AddressList)

  17:          {

  18:              sp.Start();

  19:              IPEndPoint ipe = new IPEndPoint(address, port);

  20:              Socket tempSocket = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

  21:              tempSocket.ReceiveTimeout = 1000;

  22:              tempSocket.SendTimeout = 1000;

  23:              // this is very important!!! Do not delete this.

  24:              tempSocket.NoDelay = true;


  26:              try

  27:              {

  28:                  tempSocket.Connect(ipe);

  29:                  #region Status Check

  30:                  if (tempSocket.Connected)

  31:                  {

  32:                      #region Connnected Section

  33:                      result = true;

  34:                      if (tempSocket != null)

  35:                      {

  36:                          try

  37:                          {

  38:                              tempSocket.Shutdown(SocketShutdown.Both);

  39:                              tempSocket.Close();

  40:                          }

  41:                          catch (Exception ex)

  42:                          {

  43:                              // do nothing - only release resources and don't let the system fuck up

  44:                          }

  45:                          finally

  46:                          {

  47:                              tempSocket = null;

  48:                          }

  49:                      }

  50:                      #endregion Connnected Section

  51:                      break;

  52:                  }

  53:                  else

  54:                  {

  55:                      continue;

  56:                  }

  57:                  #endregion End Status Check

  58:              }

  59:              catch (Exception ex)

  60:              {

  61:                  string title = string.Format("Could not connect to server:{0}:{1} -  " + Environment.NewLine + ex.Message + Environment.NewLine + ex.StackTrace, server, port);

  62:                  Log.Info(title);

  63:                  Log.Fatal(title);

  64:                  result = false;

  65:              }


  67:              sp.Stop();

  68:              Log.Info(string.Format("ConnectSocket->hostEntry.AddressList({0}) needed: {1}ms to connect to server ", ipe.Address.ToString(), sp.ElapsedMilliseconds));

  69:              sp.Reset();

  70:          }

  71:          return result;

  72:      }

Wednesday, August 13, 2008

Visual Studio 2008 and .NET Framework 3.5 Service Pack 1

The next service pack is finally available. If you are using .NET 3.5, or want to use any of the new features that we have been talking about being added in this service pack, I’d strongly recommend you upgrade to this. You can download it here.

So what are the new features in this, well for a Service Pack, quite a lot. Check them all out:
ASP.NET Dynamic Data, which provides a rich scaffolding framework that enables rapid data driven development without writing code, and a new addition to ASP.NET AJAX that provides support for managing browser history (back button support). For more information, see What’s New in ASP.NET and Web Development.

Core improvements to the CLR (common language runtime) that include better layout of .NET Framework native images, opting out of strong-name verification for fully trusted assemblies, improved application startup performance, better generated code that improves end-to-end application execution time, and opting managed code to run in ASLR (Address Space Layout Randomization) mode if supported by the operating system. Additionally, managed applications that are opened from network shares have the same behavior as native applications by running with full trust.

Performance improvements to WPF (Windows Presentation Foundation), including a faster startup time and improved performance for Bitmap effects. Additional functionality for WPF includes better support for line of business applications, native splash screen support, DirectX pixel shader support, and the new WebBrowser control.

ClickOnce application publishers can decide to opt out of signing and hashing as appropriate for their scenarios, developers can programmatically install ClickOnce applications that display a customized branding, and ClickOnce error dialog boxes support links to application-specific support sites on the Web.

The Entity Framework is an evolution of the existing suite of ADO.NET data access technologies. The Entity Framework enables developers to program against relational databases in according to application-specific domain models instead of the underlying database models. For more information, see Getting Started with the Entity Framework. The Entity Framework introduces some additional features, including support for new SQL Server 2008 types, default graph serialization of Entities, and the Entity Data Source. This release of the Entity Framework supports the new date and file stream capabilities in SQL Server 2008. The graph serialization work helps developers who want to build Windows Communication Foundation (WCF) services that model full graphs as data contracts. The Entity Data Source provides a traditional data source experience for ASP.NET Web application builders who want to work with the Entity Framework.

LINQ to SQL includes new support for the new date and file stream capabilities in SQL Server 2008.

The ADO.NET Data Services Framework consists of a combination of patterns and libraries, which enable data to be exposed as a flexible REST (Representational State Transfer)-based data service that can be consumed by Web clients in a corporate network or across the Internet.

The ADO.NET Data Services Framework makes data service creation over any data source. A conceptual view model of the underlying storage schema can easily be exposed through rich integration with the ADO.NET Entity Framework. Services created by using the ADO.NET Data Services Framework, and also compatible Windows Live (dev.live.com) services, can be easily accessed from any platform. For client applications that are running on Microsoft platforms, a set of client libraries are provided to make interaction with data services simple. For example, .NET Framework-based clients can use LINQ to query data services and a simple .NET Framework object layer to update data in the service.

Windows Communication Foundation now makes the DataContract Serializer easier to use by providing improved interoperability support, enhancing the debugging experience in partial trust scenarios, and extending syndication protocol support for wider usage in Web 2.0 applications.

The .NET Framework Data Provider for SQL Server (SqlClient) adds new support for file stream and sparse column capabilities in SQL Server 2008.
As for Visual Studio 2008, the Service Pack can be found here.
The following technologies have been tested and verified to work with SP1:
Silverlight 2 SDK Beta 2 & Silverlight Tools Beta 2. (If Silverlight Tools Beta 2 is already installed, you must upgrade it after you install Visual Studio 2008 SP1. To upgrade, use the installer on the Silverlight Tools Beta 2 page on the Microsoft Download Center Web site.)

  • MVC Preview Release #3
  • ASP.NET Extensions/Dynamic Data Preview
  • VC 2008 Feature Pack
  • VB PowerPack Controls (2.0 & 3.0)
  • Expression Studio 2 (RTM)
  • SQL Server 2008
  • .NET Framework 3.5 SDK
  • XSLT Profiler
  • VSTA 2.0 SDK
  • Visual Studio 2008 SDK
If you encounter issues installing SP1, uninstall technologies and/or development add-ins not listed above, and then try SP1 Setup again.

Windows Command Line FIND instead of GREP

People have maybe heared of grep on linux boxes... today I wanted to do a small count for the appeareance on a windows box where we host a log file with 500k rows.

P:\>find /?Searches for a text string in a file or files.

FIND [/V] [/C] [/N] [/I] [/OFF[LINE]] "string" [[drive:][path]filename[ ...]]

  • /V Displays all lines NOT containing the specified string.
  • /C Displays only the count of lines containing the string.
  • /N Displays line numbers with the displayed lines.
  • /I Ignores the case of characters when searching for the string.
  • /OFF[LINE] Do not skip files with offline attribute set.
  • "string" Specifies the text string to find.
  • [drive:][path]filename Specifies a file or files to search.

If a path is not specified, FIND searches the text typed at the promptor piped from another command.

update: otherwise you can also use qgrep: http://malektips.com/xp_dos_0011.html


in general usability means the following

  • the system is easy to use and re-use
  • the system can be used efficiency
  • small amount of bugs / failures
  • users are happy with software

but think also about factors like

  1. Effectiveness - customer can find anything they like to.
  2. Efficiency - data can be find easily and fast.
  3. Satisfaction - customers are satisfied of your application and they come again and again

this has been translated from the following website: http://www.samplezone.ch/ideologie/usability/ I absolutly aggree with above terms if they really do and life this terms I don't know.

How to find readable time difference bettween Oracle date types?

It is not crucial, but it is cool. This way you can find time date/time difference nicely. its very cool :-)

lpad(EXTRACT(HOUR FROM(dend_date - dstart_date) DAY TO SECOND),2,’0′) ‘ hour ‘ lpad(EXTRACT(MINUTE FROM(dend_date - dstart_date) DAY TO SECOND),2,’0′) ‘ minute ‘ lpad(EXTRACT(SECOND FROM(dend_date - dstart_date) DAY TO SECOND),2,’0′) ‘ second ‘ “Interval”FROM process_logorder by dstart_date desc;

ref::Oracle® Database SQL Reference10g Release 2 (10.2)B14200-02

thanks to: http://inanme.wordpress.com/2007/01/29/how-to-find-readable-time-difference-bettween-oracle-date-types/

Tuesday, August 12, 2008

Project phases

Preparation phase

Understand problems even if you need to request additional meetings for this. there is always somebody who can explain you details. creation of a basic to make decisions (Date, Budget, Environment, etc.). it will help all team members if you have a small model with a term overview - so everybody talks about the same. Try to identify risks and create a ranking of them - I use usually a range of 1 - 5. Each risk will be rated and it makes sense to discuss them with other people in your team.

Design phase

create all available use cases for your application. explain different use cases with 2 / 3 simple sentences. at this stage you start with architectural questions for system and environments. i suggest you start with a small front-end prototype which you can present your end users. you gone receive tons of feedback's.

Creation phase

start up with your development were you firstly describe your use cases deep enough that you able to develop unit tests and think about using aspect programming.

Entry phase

create presentations for the software - best case is if customers / target clients already know about what you are gone talk then we have integrated them deep enough into previous phases. The entry phases are usually very stressful and harm business incoming therefore don't forget: as better you prepare yourself as easier it gone be!

Important principles of agile projects


trust to solve problems tomorrow once they appear tomorrow. Feel free to come up with your concerns about actual problems today on a constructive way - do it before somebody else does it.


arrange face2face meetings - project members which meet they feel more comfortable to work together. Any problem is important to solve - communication problems are most important to solve.


force acceptance tests of your target clients, make reviews with other team members to receive feedback's about possible better solutions.


search for the simplest solution to solve your problem - exactly to solve upcoming problem. For 5 different problems think about 5 simple solutions instead one very complex solution. next time you know enough about the problem to solve all them together in one very simple solution.

Wednesday, July 30, 2008

Lists.GetListItems Method (Lists) - only 100 items returned

An application I'm developing against Sharepoint 2007 (MOSS) is reading from provided WebService data from a list.


Since the application is growing we get more and more items within lists.

The Method I uses were:
public XmlNode GetListItems ( string listName, string viewName, XmlNode query, XmlNode viewFields, string rowLimit, XmlNode queryOptions, string webID);

I do not add any rowLimit (null) but I were able to handel this over lists defaults.

  • navigate to sharepoint
  • select your list
  • list settings
  • All Items below Views
  • manipulate Item Limit to an approperiate amount

Once I done above steps i got all my 102 entries from the list.

Tuesday, July 22, 2008

Windows Shortcut's - i'm loving it!

Windows Shortcut's are available from "Start->Run" and then you enter your requested shortcut.

Accessibility Controls: access.cpl
Add Hardware Wizard: hdwwiz.cpl
Add/Remove Programs: appwiz.cpl
Administrative Tools: control.exe admintools
Automatic Updates: wuaucpl.cpl
Bluetooth Transfer Wizard: fsquirt
Calculator: calc
Certificate Manager: certmgr.msc
Character Map: charmap
Check Disk Utility: chkdsk
Clipboard Viewer: clipbrd
Command Prompt: cmd
Component Services: dcomcnfg
Computer Management: compmgmt.msc
Date and Time Properties: timedate.cpl
DDE Shares: ddeshare
Device Manager: devmgmt.msc
Direct X Control Panel (if installed): directx.cpl
Direct X Troubleshooter: dxdiag
Disk Cleanup Utility: cleanmgr
Disk Defragment: dfrg.msc
Disk Management: diskmgmt.msc
Disk Partition Manager: diskpart
Display Properties: control.exe desktop
Display Properties: desk.cpl
Display Properties (w/Appearance Tab Preselected): control.exe color
Dr. Watson System Troubleshooting Utility: drwtsn32
Driver Verifier Utility: verifier
Event Viewer: eventvwr.msc
File Signature Verification Tool: sigverif
Findfast: findfast.cpl
Folders Properties: control.exe folders
Fonts: control.exe fonts
Fonts Folder: fonts
Free Cell Card Game: freecell
Game Controllers: joy.cpl
Group Policy Editor (XP Prof): gpedit.msc
Hearts Card Game: mshearts
Iexpress Wizard: iexpress
Indexing Service: ciadv.msc
Internet Properties: inetcpl.cpl
Java Control Panel (if installed): jpicpl32.cpl
Java Control Panel (if installed): javaws
Keyboard Properties: control.exe keyboard
Local Security Settings: secpol.msc
Local Users and Groups: lusrmgr.msc
Logs You Out Of Windows: logoff
Mcft Chat: winchat
Minesweeper Game: winmine
Mouse Properties: control.exe mouse
Mouse Properties: main.cpl
Network Connections: control.exe netconnections
Network Connections: ncpa.cpl
Network Setup Wizard: netsetup.cpl
Nview Desktop Manager (if installed): nvtuicpl.cpl
Object Packager: packager
ODBC Data Source Administrator: odbccp32.cpl
On Screen Keyboard: osk
Opens AC3 Filter (if installed): ac3filter.cpl
Password Properties: password.cpl
Performance Monitor: perfmon.msc
Performance Monitor: perfmon
Phone and Modem Options: telephon.cpl
Power Configuration: powercfg.cpl
Printers and Faxes: control.exe printers
Printers Folder: printers
Private Character Editor: eudcedit
Quicktime (If Installed): QuickTime.cpl
Regional Settings: intl.cpl
Registry Editor: regedit
Registry Editor: regedit32
Removable Storage: ntmsmgr.msc
Removable Storage Operator Requests: ntmsoprq.msc
Resultant Set of Policy: rsop.msc
Resultant Set of Policy (XP Prof): rsop.msc
Scanners and Cameras: sticpl.cpl
Scheduled Tasks: control.exe schedtasks
Security Center: wscui.cpl
Services: services.msc
Shared Folders: fsmgmt.msc
Shuts Down Windows: shutdown
Sounds and Audio: mmsys.cpl
Spider Solitare Card Game: spider
SQL Client Configuration: cliconfg
System Configuration Editor: sysedit
System Configuration Utility: msconfig
System File Checker Utility: sfc
System Properties: sysdm.cpl
Task Manager: taskmgr
Telnet Client: telnet
User Account Management: nusrmgr.cpl
Utility Manager: utilman
Windows Firewall: firewall.cpl
Windows Magnifier: magnify
Windows Management Infrastructure: wmimgmt.msc
Windows System Security Tool: syskey
Windows Update Launches: wupdmgr
Windows XP Tour Wizard: tourstart
Wordpad: write

shortcuts have been copied from the following location: http://khanusah.blogspot.com/2008/07/run-mmc-command.html

Friday, July 18, 2008

Improve Web Application Performance


In the IT world, software applications are being rapidly developed. Clients, and so employers, are just looking for those teams/individuals who can build up applications rapidly, just bothering to make their application live; but what often happens after an application goes live is that users start to use the application and it doesn’t respond well. At this point, clients start to lose users and business.To code an application is not a big deal; I believe it can be done by virtually anyone, meaning it is not necessary to have great knowledge or experience. Improving performance of an existing application (especially an one put together rapidly) could be quite risky and could cause many ripple effects. Things must be planned first to avoid horrible results.The following are a few points that can make a site scalable and reliable; but which may initially slow down development. I believe that overall, when maintenance and future changes are taken into account, total development time would be reduced.

1. Minimize HTTP based Requests
2. HTTP Compression:
3. Correct Formatted Images at the Right Place:
4. Compress CSS, JavaScript and Images
5. CSS at Top
6. Javascript at Bottom
7. Content Delivery Network: (CDN)
8. Ajax
9. Ajax vs. Callback
10. Reduce Cookie size
11. Use Cache appropriately
12. Upload compiled code rather than source code

Following are few good practices to gain better performance:

  • For HTTP compression, GZip is considered the most effective and most popular by means of browsers and HTTP server. It can reduce file size up to 70% in size.
  • Always keep JavaScript and CSS in external files.
  • Avoid redirects until needed. Server.Transfer is also provided so consider that as well since it performs better in some conditions.
  • Minimize use of Iframes as it's costly.
  • Avoid try-catch blocks for control-flow as they perform poorly. Exceptions should be used only in truly exceptional situations.
  • Minimize Cookie/CSS sizes.
  • Minimize DOM objects on page as they are heavy weight.
  • Use link tags rather than @import to use/link up CSS.
  • Favicon, being a static image displayed in the browser’s address bar, should be cacheable and compressed.
  • Always prefer a cache-friendly folder structure. For example, create specific folders for static contents, like /static for static images/static pages.
  • SSL can never be cached so minimize its usage. Keep it for those pages which need to be secure, rather than using it for all the pages.
  • HTTP Post requests can’t be cached, so choose the HTTP method appropriately.
  • Prevent Denial of Service (Dos) attacks.
  • Prevent SQL Injection.
  • Prevent Cross Site Scripting (XSS).

Read the full article by dr.honey (IT SURGEON) at the following link: http://developerscon.blogspot.com/2008/06/improve-web-application-performance.html

Shared Cache - .Net Caching made easy

All information about Shared Cache is available here: http://www.sharedcache.com/. Its free and easy to use, we provide all sources at codeplex.

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