无刷新静态弹出 Page.Alert("没有此用户");
刷新Response.Write("<script>alert('邮件地址不正确')</script>");
另外附一个打开新窗口(带大小)
ClientScript.RegisterClientScriptBlock(typeof(string), "js", "<script>window.open('DetailRig.aspx?catalog=教学课件&id=" +HiddenField_UserName.Value.ToString() + "','newwindow', 'height=600, width=600, toolbar=no, menubar=no, scrollbars=no,resizable=no, location=no, status=no');</script>");