Asp.NET dropdownlist in usercontrol not firing SelectedIndexChanged event

asp.net vb.net drop-down-menu user-controls selectedindexchanged
Jim Evans picture Jim Evans · Feb 25, 2010 · Viewed 11.9k times · Source

Asp.Net 2.0 framewrok - VB.Net application I have a UserControl containing a Asp.Net DropDownList.

Things already researched and \ or tried:

  • The control gets bound to data on page load inside if not Page.IsPostBack (only loads once)
  • ID proprety is set for control (ID = ddlMyControl)
  • AutoPostBack is set to true
  • EnableViewState on the control is set to true
  • AutoEventWireUp in the UserControl declaration is set to true
  • EnableEventValidation is set to false in the parent page

The control will not fire it's SelectedIndexChanged event no matter what I do. HELP !!

Thanks :)

Answer

Jason picture Jason · Jul 18, 2011

I was running into a similar issue and it was because I left AutoPostBack="true" out of the control definition. In your original post, you said you had tried that but the posted code:

<uc3:TheControl ID="ucMyControl" runat="server" />

does not reflect the AutoPostBack property. I added that to mine and it took care of my problem. Hope that helps.

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