asp.net服务器向客户端弹出对话框，但不使页面边白板

   1:  using System;

   2:  using System.Collections.Generic;

   3:  using System.Linq;

   4:  using System.Web;

   5:  using System.Web.UI;

   6:  using System.Web.UI.WebControls;

   7:   

   8:  public partial class ClientScript : System.Web.UI.Page

   9:  {

  10:      protected void Page_Load(object sender, EventArgs e)

  11:      {

  12:          Response.Write("<script>alert('test1---直接Response输出')</script>");

  13:   

  14:          Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('test2')</script>");

  15:   

  16:          if (!ClientScript.IsClientScriptBlockRegistered(this.GetType(), "ClientScriptBlock"));  

  17:          {

  18:              ClientScript.RegisterClientScriptBlock(this.GetType(), "ClientScriptBlock", "<script>alert('test3---靠近<form>先弹出')</script>");

  19:          }

  20:   

  21:          if (!ClientScript.IsStartupScriptRegistered(this.GetType(), "StartupScript"))

  22:          {

  23:              ClientScript.RegisterStartupScript(this.GetType(), "StartupScript", "<script>alert('test4---靠近</form>后弹出')</script>");

  24:          }

  25:   

  26:      }

  27:  }

可以通过查看页面源码，看看有什么不同…