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前台HTML代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Update.aspx.cs" Inherits="Update" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<div>
<h1>修改数据</h1>
</div>
<asp:Label ID="Label1" runat="server" Text="代号："></asp:Label>
<asp:TextBox ID="txtCode" runat="server" Enabled="False"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label2" runat="server" Text="姓名："></asp:Label>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label3" runat="server" Text="性别："></asp:Label>
<asp:RadioButton ID="rdMan" runat="server" Checked="True" GroupName="sex" Text="男" />
<asp:RadioButton ID="rdWomen" runat="server" GroupName="sex" Text="女" />
<br />
<br />
<asp:Label ID="Label4" runat="server" Text="民族："></asp:Label>
<asp:DropDownList ID="drNation" runat="server">
</asp:DropDownList>
<br />
<br />
<asp:Label ID="Label5" runat="server" Text="生日："></asp:Label>
<asp:TextBox ID="txtBirthday" runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="确定" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="返回" />
</form>
</body>
</html>
后台C#代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Update : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["uid"] != null)
{
if (!IsPostBack)
{
testDataContext context = new testDataContext();
//下拉列表填数据
drNation.DataSource = context.Nation;
drNation.DataTextField = "Name";
drNation.DataValueField = "Code";
drNation.DataBind();
//取出传过来的code值
string code = Request["code"].ToString();
//查数据库
Info data = context.Info.Where(p=>p.Code==code).First();
//添上数据
txtCode.Text = data.Code;
txtName.Text = data.Name;
txtBirthday.Text = data.Birthday.Value.ToString("yyyy-MM-dd");
rdMan.Checked = data.Sex.Value;
foreach (ListItem item in drNation.Items)
{
if (item.Value == data.Nation)
{
item.Selected = true;
}
}
}
}
else
{
Response.Redirect("DengLu.aspx");
}
}
protected void Button1_Click(object sender, EventArgs e)
{
testDataContext context = new testDataContext();
//取值
string code = txtCode.Text;
string name = txtName.Text;
bool sex = rdMan.Checked;
string nation = drNation.SelectedValue;
DateTime birthday = Convert.ToDateTime(txtBirthday.Text);
//查到这条数据
Info data = context.Info.Where(p => p.Code == code).First();
//修改内容
data.Name = name;
data.Sex = sex;
data.Nation = nation;
data.Birthday = birthday;
//提交
context.SubmitChanges();
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("Main.aspx");
}
}
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原文地址：http://www.cnblogs.com/zhuxu/p/5064797.html
