Some ideas how to iterate throw Controls

Some ideas:

A) use FindControl on the object you added your control to:

Control empPeriod = this.LoadControl("EmploymentPeriod.ascx");
empPeriod.id="empPeriodId";
emp1.Controls.Add(empPeriod);
.Control empPeriod1 = empPeriod.FindControl("empPeriodId");


B) create an arraylist of the controls you've added, then use that later:

ArrayList list = new ArrayList();
for (i = 0; i < 10; i++)
{
Control empPeriod = this.LoadControl("EmploymentPeriod.ascx");
list.Add(empPeriod);
emp1.Controls.Add(empPeriod);
}

...

for (i = 0; i < 10; i++)
{
Control empPeriod1 = (Control)list[i];
......
}

C) do a recursive search for your controls

public void iterate(Control c)
{
if (c is YourType)
{
do_something(c);
}
forech (Control c1 in c.Controls)
{
iterate(c1);
}
}