明天的明天 永远的永远 未知的一切 我与你一起承担 ??

是非成败转头空 青山依旧在 几度夕阳红 。。。
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前台:

<%@ Page language="c#" Codebehind="WebForm4.aspx.cs" AutoEventWireup="false" Inherits="WebApplication25.WebForm4" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
    
<HEAD>
        
<title>WebForm4</title>
        
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
        
<meta name="CODE_LANGUAGE" Content="C#">
        
<meta name="vs_defaultClientScript" content="JavaScript">
        
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
    
</HEAD>
    
<body>
        
<form id="Form1" method="post" runat="server">
            
<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" DataKeyField="EmployeeID">
                
<Columns>
                    
<asp:TemplateColumn>
                        
<ItemTemplate>
                            
<input type="hidden" id="SelectedID" runat="server" value='<%# Container.ItemIndex%>' name="SelectedID"/>
                            
<asp:CheckBox ID="chkExport" Runat="server" />
                        
</ItemTemplate>
                    
</asp:TemplateColumn>
                    
<asp:BoundColumn DataField="EmployeeID" HeaderText="EmployeeID"></asp:BoundColumn>
                    
<asp:TemplateColumn HeaderText="FirstName">
                        
<ItemTemplate>
                            
<asp:Label ID="lab_FirstName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"FirstName")%>'>
                            
</asp:Label>
                            
<asp:TextBox ID="txt_FirstName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"FirstName")%>' Visible="False">
                            
</asp:TextBox>
                        
</ItemTemplate>
                    
</asp:TemplateColumn>
                    
<asp:TemplateColumn HeaderText="LastName">
                        
<ItemTemplate>
                            
<asp:Label ID="lab_LastName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"LastName")%>'>
                            
</asp:Label>
                            
<asp:TextBox ID="txt_LastName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"LastName")%>' Visible="False">
                            
</asp:TextBox>
                        
</ItemTemplate>
                    
</asp:TemplateColumn>
                
</Columns>
            
</asp:DataGrid>
            
<asp:Button id="Button1" runat="server" Text="编辑"></asp:Button>
            
<asp:Button id="Button2" runat="server" Text="更新"></asp:Button>
        
</form>
    
</body>
</HTML>

后台:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace WebApplication25
{
    
/// <summary>
    
/// WebForm4 的摘要说明。
    
/// </summary>
    public class WebForm4 : System.Web.UI.Page
    {
        
protected System.Web.UI.WebControls.Button Button1;
        
protected System.Web.UI.WebControls.Button Button2;
        
protected System.Web.UI.WebControls.DataGrid DataGrid1;
        
protected System.Web.UI.HtmlControls.HtmlInputHidden SelectID;
    
        
private void Page_Load(object sender, System.EventArgs e)
        {
            
// 在此处放置用户代码以初始化页面
            if(!IsPostBack)
            {
                SetBind();
            }
        }

        
private void SetBind()
        {
            SqlConnection conn
=new SqlConnection("server=.;uid=sa;pwd=;database=northwind");
            SqlDataAdapter da
=new SqlDataAdapter("select * from Employees",conn);
            DataSet ds
=new DataSet();
            da.Fill(ds,
"table1");
            
this.DataGrid1.DataSource=ds.Tables["table1"];
            
this.DataGrid1.DataBind();            
        }


        
#region Web 窗体设计器生成的代码
        
override protected void OnInit(EventArgs e)
        {
            
//
            
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            
//
            InitializeComponent();
            
base.OnInit(e);
        }
        
        
/// <summary>
        
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
        
/// 此方法的内容。
        
/// </summary>
        private void InitializeComponent()
        {    
            
this.Button1.Click += new System.EventHandler(this.Button1_Click);
            
this.Button2.Click += new System.EventHandler(this.Button2_Click);
            
this.Load += new System.EventHandler(this.Page_Load);

        }
        
#endregion

        
private void Button1_Click(object sender, System.EventArgs e)
        {
            
foreach(DataGridItem di in this.DataGrid1.Items) 
            { 
                
if(((CheckBox)di.FindControl("chkExport")).Checked==true
                { 
                    ((TextBox)di.FindControl(
"txt_FirstName")).Visible=true;
                    ((TextBox)di.FindControl(
"txt_LastName")).Visible=true;
                    ((Label)di.FindControl(
"lab_FirstName")).Visible=false;
                    ((Label)di.FindControl(
"lab_LastName")).Visible=false;
                } 
            } 

        }

        
private void Button2_Click(object sender, System.EventArgs e)
        {
            
foreach(DataGridItem di in this.DataGrid1.Items) 
            { 
                
if(((CheckBox)di.FindControl("chkExport")).Checked==true
                { 
                    
if(((TextBox)di.FindControl("txt_FirstName")).Text!=((Label)di.FindControl("lab_FirstName")).Text||((TextBox)di.FindControl("txt_LastName")).Text!=((Label)di.FindControl("lab_LastName")).Text)
                    {
                        Response.Write(
"记录号:"+this.DataGrid1.DataKeys[int.Parse(((HtmlInputHidden)di.FindControl("SelectedID")).Value)]+",FirstName:"+((TextBox)di.FindControl("txt_FirstName")).Text+",LastName:"+((TextBox)di.FindControl("txt_LastName")).Text+"<br>");
                    }
                    ((TextBox)di.FindControl(
"txt_FirstName")).Visible=false;
                    ((TextBox)di.FindControl(
"txt_LastName")).Visible=false;
                    ((Label)di.FindControl(
"lab_FirstName")).Visible=true;
                    ((Label)di.FindControl(
"lab_LastName")).Visible=true;
                    ((CheckBox)di.FindControl(
"chkExport")).Checked=false;
                }
            }
        }
    }
}