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DropDownList doesn't generate a PostBack event 'OnSelectedIndexChanged'

Hello,

I am writing a c# asp.net application. I have a page with a DropDownList with AutoPostBack set to 'true'.
There is a case where, on the client side, I reset the DropDownList from another page:
parent.frames[0].document.getElementById('ddlGroups').selectedIndex = 0;

after that, I can't select the previous item in the DropDownList anymore - the postback doesn't happen.
Is it because I have changed the index from the client side?
How can I fix that?

Maybe I should reset the DropDownList on the server side. If so, Is it possible to reference a control from a different page?

Thanks

Bob Learned

If you are working with 2.0, there is the PreviousPage property that lets you access public properties on a page.

Bob

Relegence

ASKER

Can you please give an example of how to reference a control in another page using PreviousPage?

Bob Learned

Example:

if (this.PreviousPage != null && this.PreviousPage.IsCrossPagePostBack)
{
TextBox txt = (TextBox)this.PreviousPage.FindControl("TextBox1");

if (txt != null)
{
this.TextBox1.Text = txt.Text;
}
this.PopupWindow1.Visible = false;
}

Bob

ASKER CERTIFIED SOLUTION

Michel Plungjan

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