[ASP.Net 2005, WinXP SP2, IE7]

I have a GridView in an update panel, and the GridView has an 
ObjectDataSource. Under certain conditions the Object that is the 
ObjectDataSource will throw an exception with a specific error message, but 
on the client side the only error message displayed is "exception has been 
thrown by the target of an invocation". I would like the error message on 
the client to show the error description the object provides when it throws 
the error. Is there any way to do this? For clarification, I know exactly 
why the exception is being thrown, and it should be thrown, so I'm not 
trying to debug that, I'm just trying to figure out how to get the error 
message alert box shown on the client side to show the actual InnerException 
message instead of  "exception has been thrown by the target of an 
invocation".  TIA

Hi Monty,

You can handle the event "AsyncPostBackError" of the ScriptManager instance 
on the WebForm to return a custom message whatever you want:


    protected void ScriptManager1_AsyncPostBackError(object sender, 
AsyncPostBackErrorEventArgs e)
    {
        if (e.Exception != null && e.Exception.InnerException != null)
        {
            ScriptManager1.AsyncPostBackErrorMessage = 
e.Exception.InnerException.Message;
        }
    }


Above code will correctly show the real exception's message.

Hope this helps.


Regards,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Perfect, thanks again Walter!