How to handle dynamic user control events in aspx page.

Question

Hi, I have an aspx webpage in which an user control is added dynamically as follows:

UserControl testUsrControl = LoadControl("TestUsrControl") as UserControl;
testUsrControl.ID ="test";

Then I tried adding an event handler of user control inside aspx like below:

testUsrControl.Drpdatafield_SelectIndexChanged += new EventHandler(this.Drpdatafield_SelectIndexChanged);

But this line is giving error at **testUsrControl.Drpdatafield_SelectIndexChanged **. The error is "Drpdatafield_SelectIndexChanged" doesn't exist in UserControl.

How can get the testUsrControl's events inside aspx page dynamically.

Thanks, Rupa

Answer 1

You need to cast the control to the correct type (say MyUserControlType) and then verify that it's ok

MyUserControlType testUsrControl = LoadControl("TestUsrControl") as MyUserControlType;
if(testUsrControl != null {
          testUsrControl.Drpdatafield_SelectIndexChanged += new EventHandler(this.Drpdatafield_SelectIndexChanged)
}

You get the type from ClassName in the usercontrol markup file <% @ Control Language="C#" ClassName="MyUserControlType" %>