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DataList 编辑、删除、更新、取消

2015-01-22 12:37 295 查看

前台页面： <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="WebApplication2.WebForm4" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DataList ID="DataList1" runat="server"
OnCancelcommand="DataList1_CancelCommand"
OnUpdatecommand="DataList1_UpdateCommand"
oneditcommand="DataList1_EditCommand" >
<HeaderTemplate>
<asp:Label ID="lbl22" runat="Server" Font-Size="20" Text="编号"></asp:Label>
<asp:Label ID="Label2" runat="Server" Font-Size="20" Text="姓名"></asp:Label>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server"
Text='<%# Eval("no") %>'></asp:Label>
<asp:Label ID="lbl" runat="Server" Text='<%# Eval("name") %>'></asp:Label>
<asp:LinkButton ID="lk1" runat="Server" CommandArgument='<%# Eval("id") %>' CommandName="edit">编辑</asp:LinkButton>
<asp:LinkButton ID="LinkButton1" runat="Server" CommandArgument='<%# Eval("id") %>' CommandName="delete">删除</asp:LinkButton>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txt_no" runat="Server" Text='<%# Eval("no") %>'></asp:TextBox>
<asp:TextBox ID="txt_name" runat="Server" Text='<%# Eval("name") %>'></asp:TextBox>
<asp:LinkButton ID="lk1" runat="Server" CommandArgument='<%# Eval("id") %>' CommandName="update">更新</asp:LinkButton>
<asp:LinkButton ID="LinkButton1" runat="Server" CommandArgument='<%# Eval("id") %>' CommandName="cancel">取消</asp:LinkButton>

</EditItemTemplate>
</asp:DataList>
</div>
</form>
</body>
</html>

后台源码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

namespace WebApplication2
{
public partial class WebForm4 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) { Bind(); }
}
private void Bind()
{
this.DataList1.DataSource = getTable();
this.DataList1.DataBind();
}
private DataTable getTable()
{
SqlConnection con = new SqlConnection("server=.;database=student;uid=sa;pwd=fiybird");
SqlDataAdapter apt = new SqlDataAdapter("select * from stu",con);
DataTable dt = new DataTable();
apt.Fill(dt);
return dt;
}

protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
{
int id = int.Parse(e.CommandArgument.ToString());
string no = (e.Item.FindControl("txt_no") as TextBox).Text;
string name = (e.Item.FindControl("txt_name") as TextBox).Text;
if (update(no, name, id))
{
this.ClientScript.RegisterStartupScript(this.GetType(),"","alert('修改成功！');",true);
this.DataList1.EditItemIndex=-1;
Bind();
}
}
private bool update(string no, string name, int id)
{
string sql = string.Format("update stu set no='{0}',name='{1}' where id={2}",no,name,id);
SqlConnection con = new SqlConnection("server=.;database=student;uid=sa;pwd=fiybird");
try
{
SqlCommand cmd = new SqlCommand(sql,con);
con.Open();
return cmd.ExecuteNonQuery() > 0;
}
catch (System.Exception ex)
{
throw;
}
finally
{
con.Close();
}
}

protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)
{
int id = int.Parse(e.CommandArgument.ToString());
this.DataList1.EditItemIndex = e.Item.ItemIndex;
Bind();
}

protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = -1;
Bind();
}

}
} 那么删除要怎么处理呢？有UpdateCommand、EditCommand、CancelCommand 是否有DeleteCommand事件呢？去动手试试看。。。

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