To use PageMethods you need to follow these steps: You need to use ScriptManager and set EnablePageMethods. (You did). Create a static method in your code behind and use the [WebMethod] attribute. Call you method in javascript like you should do in C# but you have more parameter do fill, the sucess and error callbacks. … Read more
When you use an UpdatePanel, then you can not call JavaScript using ClientScript as you have tried to. You have to use ScriptManager.RegisterStartupScript instead. So change your Page.ClientScript.RegisterStartupScript(this.GetType(), “myKey”, javaScript); to ScriptManager.RegisterStartupScript(updatePanelId,updatePanelId.GetType(), “alert”, javaScript, true);
Off the top of my head: Use GetType() instead of typeof(Page) in order to bind the script to your actual page class instead of the base class, Pass a key constant instead of Page.UniqueID, which is not that meaningful since it’s supposed to be used by named controls, End your Javascript statement with a semicolon, … Read more