实现无刷新联动例子汇总

网友投稿 216 2023-08-02


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" %>

Iframe实现局部刷新

省份名称:

显示城市列表

height="100%" frameborder="0" scrolling="no" />

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" %>

脚本方法实现刷新

选择省份:

城市:

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" %>

callback方法实现刷新

选择省份:

城市:

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" %>

ajax方法实现刷新

选择省份:

&lthttp://;/td>

城市:

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;

}

}

}

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