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How to identify what type a control is

Posted on 2004-10-17
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Last Modified: 2011-09-20
In the following piece of program, how could I identify which are combo boxes, for example?

foreach (Control ctl in Controls)
{
   if ( ***a combo box is found*** )
      ctl.Text = "";
}
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Question by:Alberto071397
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by:
ryerras earned 125 total points
ID: 12334724
ctl is DropDownList
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Expert Comment

by:ryerras
ID: 12334757
But the code you posted takes you no where. By default, the Page.Controls has the WebForm as one control. It wouldnt be able to find controls on the WebForm. For that you need to loop inside, try as follows
foreach (Control ctl in Controls)
 {
      if(ctl is DropDownList)
             Response.Write("Text : "+ ctl.Text);
      else if (ctl.HasControls())
        {
            foreach (Control ctl in ctrl.Controls)
              {
                if(ctl is DropDownList)
                   Response.Write("Text: "+ ctl.Text);
            }
          }
}
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