The ImageButton.GetPostBackOptions method creates a System.Web.UI.PostBackOptions object that represents the System.Web.UI.WebControls.ImageButton control's postback behavior. The System.Web.UI.PostBackOptions object is then typically passed to the System.Web.UI.ClientScriptManager.GetPostBackEventReference(System.Web.UI.PostBackOptions) method, which is used to obtain a reference to a client-side script function that, when invoked, causes the server to postback to the page.

This method is used primarily by control developers when extending the System.Web.UI.WebControls.ImageButton class.