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IPostBackEventHandler

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ggeshev

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Mar 21, 2008, 5:32:10 PM3/21/08
to
Hello!

I am building a Webcontrol.

public class MyCustomControl : WebControl, IPostBackEventHandler,
IPostBackDataHandler {
.......

void IPostBackEventHandler.RaisePostBackEvent(string args)
{
RaisePostBackEvent(args);
}

protected virtual void RaisePostBackEvent(string args) {

}


bool IPostBackDataHandler.LoadPostData(string postDataKey,
NameValueCollection values)
{
return LoadPostData(postDataKey, values);
}

protected virtual bool LoadPostData(string postDataKey,
NameValueCollection values)
{
return true;
}

void IPostBackDataHandler.RaisePostDataChangedEvent()
{
RaisePostDataChangedEvent();
}

protected virtual void RaisePostDataChangedEvent()
{

}

}


The problem is - Nevertheless I implement IPostBackEventHandlerand
IPostBackDataHandler , methods RaisePostBackEvent, LoadPostData and
RaisePostDataChangedEvent are never called.

Why is so?


Tony

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Mar 26, 2008, 4:19:26 PM3/26/08
to
I think IPostBackEventHandler only work when you implement in Page control.

"ggeshev" <gge...@tonegan.bg> wrote in message
news:%23YiTvm3...@TK2MSFTNGP05.phx.gbl...

Brian Hartsock

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Apr 22, 2008, 5:35:49 PM4/22/08
to

Just implementing IPostBackDataHandler does nothing. You have to
register the control with the page. I usually do it in PreRender,
because if a page doesn't get rendered it can't handle post back
data. I don't think it really matters though. I think the same
applies to IPostBackEventHandler but I have never used that.

protected void Page_PreRender(object sender,
EventArgs e)
{
this.Page.RegisterRequiresPostBack(this);
}

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