Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server for the specified control with the specified event arguments and Boolean indication whether to register the post back for event validation.
A string representing a JavaScript call to the postback function that includes the target control's ID and event arguments.
Using the erload:System.Web.UI.ClientScriptManager.GetPostBackEventReference method requires the control that handles the postback to implement the System.Web.UI.IPostBackEventHandler interface. To implement the System.Web.UI.IPostBackEventHandler interface for a System.Web.UI.Page, use the @ Implements directive.