public class BaseGlobal : HttpApplication { void Application_Start(object sender, EventAgrs e) { // Set breakpoint string abc = ""; } } public class MyGlobal : BaseGlobal { void Application_Start(object sender, EventAgrs e) { // Set breakpoint string dddd = ""; } } //Global.asax &lgt;%@ Application Language="C#" Inherits="MyGlobal" %