Returns an Event Callback reference string that can be used in Client script to initiate a callback request.
public string GetCallbackEventReference(string QueryStringExpression)
An expression that is evaluated in script code and embedded as the second parameter. The value of this second parameter is interpreted as a QueryString to the URL that is fired in response to the request to the server.
This expression can be a static string or any value or expression that is in scope at the time of calling the event method. The expression must evaluate to a string Example: string GetCallbackEventReference("'CustomerId=' + forms.txtCustomerId.value + "'"); A callback event reference result looks like this: ControlID_StartCallback(event,'CustomerId=_12312')
See also:Class HoverPanel
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