当捕获一个自定义异常时使页面显示为“404页面未找到”的疑问

Question

try
private void Page_Load(object sender, System.EventArgs e)
{
if(Session["EmailAddr"] == null)
{
throw new HttpException(404, "Page Not Found");
}

Answer 1

加个判断把它捕获吧~
private void Page_Load(object sender, System.EventArgs e)
{
if(Session["EmailAddr"] == "" || Session["EmailAddr"] == null)
{
throw new HttpException(404, "页面未找到");
}
}

Answer 2

private void Page_Load(object sender, System.EventArgs e)
{
if(Session["EmailAddr"] == null)
{
throw new HttpException(404, "Page Not Found");
}
              catch
             {
               this.Response.StatusCode =404;
this.Response.Cache.SetNoStore();
this.Response.End();              }