实现无刷新联动例子汇总

Iframe实现无刷新联动

iframe的无刷新其实是局部刷新，状态栏的滚动条还是会滚动，只是页面不会闪烁，这是一种比较老的技术了，在处理的数据两大的时候会比较慢，在本例中需要两个页面：index.aspx和frame.asapx,index.aspx用来显示界面，其中有一个iframe标记，指向frame.aspx页用来显示结果
index.aspx前台代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Index.aspx.cs" Inherits="_Default" %>




  

  



  

frame.aspx的前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="frame.aspx.cs" Inherits="myframe" %>




  


  

frame.aspx后台代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class myframe : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    string pro = Request.QueryString["pro"];
    switch (pro)
    {
      case "湖北":
 this.ddlCity.Items.Clear();
 this.ddlCity.Items.Add("武汉");
 this.ddlCity.Items.Add("黄冈");
 this.ddlCity.Items.Add("黄石");
 this.ddlCity.Items.Add("襄樊");
 break;
      case "河北":
 this.ddlCity.Items.Clear();
 this.ddlCity.Items.Add("石家庄");
 this.ddlCity.Items.Add("唐山");
 this.ddlCity.Items.Add("承德");
 this.ddlCity.Items.Add("邯郸");
 break;
      case "广东":
 this.ddlCity.Items.Clear();
 this.ddlCity.Items.Add("广州");
 this.ddlCity.Items.Add("佛山");
 this.ddlCity.Items.Add("深圳");
 this.ddlCity.Items.Add("珠海");
 break;
      case "河南":
 this.ddlCity.Items.Clear();
 this.ddlCity.Items.Add("郑州");
 this.ddlCity.Items.Add("新乡");
 this.ddlCity.Items.Add("安阳");
 this.ddlCity.Items.Add("信阳");
 break;

    }
  }
}

Javascript无刷新联动

前台页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="jacascript_Default" %>




  

  



  

后台代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;

public partial class jacascript_Default : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    StringBuilder myscript = new StringBuilder();
    myscript.Append("function City() {n");
    myscript.Append("var ddlpro=document.getElementById('ddlPro');n");
    myscript.Append("var pro=ddlpro.options[ddlpro.selectedIndex].innerText;n");
    //myscript.Append("var pro=document.getElementById('txtPro').value;n");
    myscript.Append("switch(pro) { n");
    myscript.Append("case '湖北':n");
    myscript.Append("FillData('" + GetCityStr("湖北") + "');n");
    myscript.Append("break;n");
    myscript.Append("case '河北':n");
    myscript.Append("FillData('" + GetCityStr("河北") + "');n");
    myscript.Append("break;n");
    myscript.Append("case '广东':n");
    myscript.Append("FillData('" + GetCityStr("广东") + "');n");
    myscript.Append("break;n");
    myscript.Append("case '河南':n");
    myscript.Append("FillData('" + GetCityStr("河南") + "');n");
    myscript.Append("break;}n");
    myscript.Append("}n");

    Page.Clientscript.RegisterClientscriptBlock(typeof(string), "city", myscript.ToString(), true);

  }

  private string GetCityStr(string pro)
  {
    string city = "";
    switch (pro)
    {
      case "湖北":
 city = "武汉,黄冈,黄石,襄樊";
 break;
      case "河北":
 city = "石家庄,唐山,承德,邯郸";
 break;
      case "广东":
 city = "广州,佛山,深圳,珠海";
 break;
      case "河南":
 city = "郑州,新乡,安阳,信阳";
 break;
    }
    return city;
  }
}

CallBack无刷新联动

前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="callback_Default" %>




  

  



  

后台代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class callback_Default : System.Web.UI.Page,ICallbackEventHandler
{
 private string _data;
 protected void Page_Load(object sender, EventArgs e)
 {

  }

 ICallbackEventHandler 成员
}

Ajax无刷新联动

该例子也要用到两个页面：oec203index.aspx和datapage.aspx. datapage.aspx主要用来回送要显示的数据
.aspx页面前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="ajax_Default" %>




  

  



  

datapage.aspx后台代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class ajax_datapage : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    string pro = Request.QueryString["pro"];
    Response.Clear();
    switch (pro)
    {
      case "湖北":
 Response.Write("武汉,黄冈,黄石,襄樊");
 break;
      case "河北":
 Response.Write("石家庄,唐山,承德,邯郸");
 break;
      case "广东":
 Response.Write("广州,佛山,深圳,珠海");
 break;
      case "河南":
 Response.Write("郑州,新乡,安阳,信阳");
 break;
    }
  }
}

以上所述就是本文的全部内容了，希望大家能够喜欢。