|
|
网友问这个问题，写了一个简单的例子：   前台： 1 <%@ Page language="c#" Codebehind="WebForm4.aspx.cs" AutoEventWireup="false" Inherits="WebApplication25.WebForm4" %>
2<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
3<HTML>
4 <HEAD>
5 <title>WebForm4</title>
6 <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
7 <meta name="CODE_LANGUAGE" Content="C#">
8 <meta name="vs_defaultClientScript" content="JavaScript">
9 <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
10 </HEAD>
11 <body>
12 <form id="Form1" method="post" runat="server">
13 <asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" DataKeyField="EmployeeID">
14 <Columns>
15 <asp:TemplateColumn>
16 <ItemTemplate>
17 <input type="hidden" id="SelectedID" runat="server" value='<%# Container.ItemIndex%>' name="SelectedID"/>
18 <asp:CheckBox ID="chkExport" Runat="server" />
19 </ItemTemplate>
20 </asp:TemplateColumn>
21 <asp:BoundColumn DataField="EmployeeID" HeaderText="EmployeeID"></asp:BoundColumn>
22 <asp:TemplateColumn HeaderText="FirstName">
23 <ItemTemplate>
24 <asp:Label ID="lab_FirstName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"FirstName")%>'>
25 </asp:Label>
26 <asp:TextBox ID="txt_FirstName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"FirstName")%>' Visible="False">
27 </asp:TextBox>
28 </ItemTemplate>
29 </asp:TemplateColumn>
30 <asp:TemplateColumn HeaderText="LastName">
31 <ItemTemplate>
32 <asp:Label ID="lab_LastName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"LastName")%>'>
33 </asp:Label>
34 <asp:TextBox ID="txt_LastName" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"LastName")%>' Visible="False">
35 </asp:TextBox>
36 </ItemTemplate>
37 </asp:TemplateColumn>
38 </Columns>
39 </asp:DataGrid>
40 <asp:Button id="Button1" runat="server" Text="编辑"></asp:Button>
41 <asp:Button id="Button2" runat="server" Text="更新"></asp:Button>
42 </form>
43 </body>
44</HTML>
45
46后台：
47
48using System;
49using System.Collections;
50using System.ComponentModel;
51using System.Data;
52using System.Data.SqlClient;
53using System.Drawing;
54using System.Web;
55using System.Web.SessionState;
56using System.Web.UI;
57using System.Web.UI.WebControls;
58using System.Web.UI.HtmlControls;
59
60namespace WebApplication25
61   {
62  /**//// <summary>
63 /// WebForm4 的摘要说明。
64 /// </summary>
65 public class WebForm4 : System.Web.UI.Page
66 {
67 protected System.Web.UI.WebControls.Button Button1;
68 protected System.Web.UI.WebControls.Button Button2;
69 protected System.Web.UI.WebControls.DataGrid DataGrid1;
70 protected System.Web.UI.HtmlControls.HtmlInputHidden SelectID;
71
72 private void Page_Load(object sender, System.EventArgs e)
73 {
74 // 在此处放置用户代码以初始化页面
75 if(!IsPostBack)
76 {
77 SetBind();
78 }
79 }
80
81 private void SetBind()
82 {
83 SqlConnection conn=new SqlConnection("server=srvxglai-sha;uid=sa;pwd=321413;database=northwind");
84 SqlDataAdapter da=new SqlDataAdapter("select * from Employees",conn);
85 DataSet ds=new DataSet();
86 da.Fill(ds,"table1");
87 this.DataGrid1.DataSource=ds.Tables["table1"];
88 this.DataGrid1.DataBind();
89 }
90
91
92 Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
93 override protected void OnInit(EventArgs e)
94 {
95 //
96 // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
97 //
98 InitializeComponent();
99 base.OnInit(e);
100 }
101
102 /**//// <summary>
103 /// 设计器支持所需的方法 - 不要使用代码编辑器修改
104 /// 此方法的内容。
105 /// </summary>
106 private void InitializeComponent()
107 {
108 this.Button1.Click += new System.EventHandler(this.Button1_Click);
109 this.Button2.Click += new System.EventHandler(this.Button2_Click);
110 this.Load += new System.EventHandler(this.Page_Load);
111
112 }
113 #endregion
114
115 private void Button1_Click(object sender, System.EventArgs e)
116 {
117 foreach(DataGridItem di in this.DataGrid1.Items)
118 {
119 if(((CheckBox)di.FindControl("chkExport")).Checked==true)
120 {
121 ((TextBox)di.FindControl("txt_FirstName")).Visible=true;
122 ((TextBox)di.FindControl("txt_LastName")).Visible=true;
123 ((Label)di.FindControl("lab_FirstName")).Visible=false;
124 ((Label)di.FindControl("lab_LastName")).Visible=false;
125 }
126 }
127
128 }
129
130 private void Button2_Click(object sender, System.EventArgs e)
131 {
132 foreach(DataGridItem di in this.DataGrid1.Items)
133 {
134 if(((CheckBox)di.FindControl("chkExport")).Checked==true)
135 {
136 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)
137 {
138 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>");
139 }
140 ((TextBox)di.FindControl("txt_FirstName")).Visible=false;
141 ((TextBox)di.FindControl("txt_LastName")).Visible=false;
142 ((Label)di.FindControl("lab_FirstName")).Visible=true;
143 ((Label)di.FindControl("lab_LastName")).Visible=true;
144 ((CheckBox)di.FindControl("chkExport")).Checked=false;
145 }
146 }
147 }
148 }
149 }
150
|