弹出窗口中修改值数据后，父窗口中加载修改后的数据-优快云博客

本文介绍了一个使用 ASP.NET 的示例项目，通过父窗口弹出子窗口进行数据更新并回传修改结果。该过程涉及前后端代码配合实现数据交互，包括数据更新后的返回值处理及页面缓存清理。

父窗口中前台代码：

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

var getreturnvalue = null;

function showModelWindow()

{

var a=(screen.height-400)/2;

var b=(screen.width-500)/2;

var showvalue = window.showModalDialog('xwwtest.aspx','newwindow','dialogWidth:700px;scroll:no;dialogHeight:550px,top='+a+ ',left='+b+',toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no');

if(showvalue!=null)

{

document.getElementById("Hidden1").value = showvalue;

getreturnvalue = showvalue;

document.getElementById("Button1").onclick=buttonClick();

}

function buttonClick()

{

document.form1.submit();

}

</script>

</head>

<body>

<div>

<br />

gfdgfdgdfgdfgfdgfdsgdsgfdsgdgfds<br />

<br />

<asp:Button ID="Button2" runat="server" Text="Button" /><br />

<br />

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"

DataSourceID="SqlDataSource1" OnPageIndexChanging="GridView1_PageIndexChanging"

PageSize="4">

<asp:BoundField DataField="id" HeaderText="id" InsertVisible="False" ReadOnly="True"

SortExpression="id" />

<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />

<asp:BoundField DataField="subject" HeaderText="subject" SortExpression="subject" />

<asp:BoundField DataField="Source" HeaderText="Source" SortExpression="Source" />

</Columns>

</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=XWW;Initial Catalog=Testdb;User ID=sa;Password=admin"

ProviderName="System.Data.SqlClient" SelectCommand="SELECT * FROM [Test]"></asp:SqlDataSource>

<asp:Button ID="Button4" runat="server" OnClick="Button4_Click" Text="Button" />

</div>

</form>

</body>

</html>

父窗口中后台代码：

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 wss_testwebpart : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (Request.Form["Hidden1"] != null)

{

this.GridView1.DataSourceID = "SqlDataSource1";

this.GridView1.DataBind();

}

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

this.GridView1.PageIndex = e.NewPageIndex;

Response.Write(e.NewPageIndex.ToString());

this.GridView1.DataBind();

}

protected void Button4_Click(object sender, EventArgs e)

{

Response.Write(Request.Form["Hidden1"].ToString());

}

子窗口中前台代码：

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

function returnvalue()

{

window.returnValue=true;

window.close();

}

</script>

</head>

<body>

<div>

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="返回" /><br />

<br />

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox></div>

</form>

</body>

</html>

子窗口中后台代码：

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.Data.SqlClient;

public partial class wss_xwwtest : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

int i = 0;

SqlConnection con = new SqlConnection("server=xww;database=testdb;uid=sa;pwd=admin");

con.Open();

string cmdtxt = "UPDATE test SET name='"+this.TextBox2.Text+"',subject='"+this.TextBox3.Text+"' where id="+this.TextBox1.Text.Trim()+"";

SqlCommand com = new SqlCommand(cmdtxt,con);

i = com.ExecuteNonQuery();

if (i != 0)

{

Response.Write("<script language='javascript'>alert('修改成功！');window.returnValue='ceshi';window.close();</script>");

//Session["IsGood"] = "1";

}

else

{

Response.Write("<script language='javascript'>alert('修改失败！')</script>");

}

在修改一条数据时,为了使弹出的页面及时地得到最新数据,应该清空弹出页面中缓存,所以还应该在页面中添加以下代码,使页面不存在缓存.限制页面读取本地缓存