How to handle dynamic user control events in aspx page

I have an aspx webpage in which an user 开发者_开发问答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

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" %>