httpmodule的Attribute权限验证

看到一个控件，利用特性来进行权限验证，下面是它的一段代码，它还介绍说是在httpmodule里进行权限验证的，
那样的话，在httpmodule的那个位置，是执行按钮动作函数呢？那位前辈能知道，谢谢！[PopedomTypeAttaible(PopedomType.Edit)]
[System.Security.Permissions.PrincipalPermission(System.Security.Permissions.SecurityAction.Demand, Role = "OR")]
protected void Button2_Click(object sender, EventArgs e)
{
Response.Write("修改权限");
}在HttpModule里那块是执行按钮等动作的？            application.BeginRequest += new EventHandler(application_BeginRequest);            application.EndRequest += new EventHandler(application_EndRequest);            application.PreRequestHandlerExecute += new EventHandler(application_PreRequestHandlerExecute);            application.PostRequestHandlerExecute += new EventHandler(application_PostRequestHandlerExecute);            application.ReleaseRequestState += new EventHandler(application_ReleaseRequestState);            application.AcquireRequestState += new EventHandler(application_AcquireRequestState);            application.AuthenticateRequest += new EventHandler(application_AuthenticateRequest);            application.AuthorizeRequest += new EventHandler(application_AuthorizeRequest);            application.ResolveRequestCache += new EventHandler(application_ResolveRequestCache);            application.PreSendRequestHeaders += new EventHandler(application_PreSendRequestHeaders);            application.PreSendRequestContent += new EventHandler(application_PreSendRequestContent);