You may receive “Page Methods is undefined while calling Server Side function from Client Side Code using PageMethods in AJAX. The possible cause can be,
1. You may have not added EnablePageMethods=”true” in ScriptManager tag.
1: <ajax:ScriptManager
2: EnablePageMethods=”true” ID=”ScriptManager1″ runat=”server”>
3: </ajax:ScriptManager>
2. You have a [...]
