cs文件：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using MyPersonal.DBUtility;
using System.Data.SqlClient;
public partial class DataListTest : System.Web.UI.Page
{
string sqlString = "select * from Employees";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState["pageIndex"] = 0;
this.PageFunc();
}
this.DataList1.SelectedIndexChanged += new EventHandler(DataList1_SelectedIndexChanged);
this.DataList1.ItemCommand += new DataListCommandEventHandler(DataList1_ItemCommand);
this.DataList1.EditCommand += new DataListCommandEventHandler(DataList1_EditCommand);
this.DataList1.CancelCommand += new DataListCommandEventHandler(DataList1_CancelCommand);
this.DataList1.UpdateCommand += new DataListCommandEventHandler(DataList1_UpdateCommand);
//上下页激活函数
this.LinkButton1.Command += new CommandEventHandler(Page_Click);
this.LinkButton2.Command += new CommandEventHandler(Page_Click);
}
void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
{
int id = Convert.ToInt32(this.DataList1.DataKeys[e.Item.ItemIndex]);
string firstName = ((TextBox)e.Item.FindControl("txtFirstName")).Text;
string updateString = "update Employees set FirstName='" + firstName + "' where EmployeeID='" + id + "'";
SqlHelper.ExecuteSql(updateString);
this.DataList1.EditItemIndex = -1;
this.BindData();
}
void DataList1_CancelCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = -1;
this.BindData();
}
void DataList1_EditCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = e.Item.ItemIndex;
this.BindData();
}
void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName=="select")
{
//e.Item.ItemIndex是获取索引，下面的语句是获取DataKeyField是获取相应主键
Response.Write(this.DataList1.DataKeys[e.Item.ItemIndex].ToString());
}
}
void DataList1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void BindData()
{
DataTable myTable =SqlHelper.Query1(sqlString);
this.DataList1.DataSource = myTable;
this.DataList1.DataBind();
}
/// <summary>
/// 分页函数
/// </summary>
private void PageFunc()
{
PagedDataSource myDataSource = new PagedDataSource();
myDataSource.DataSource=(SqlHelper.Query1(sqlString)).DefaultView;
myDataSource.AllowPaging = true;
myDataSource.PageSize = 3;
//获取当前页数
myDataSource.CurrentPageIndex = Convert.ToInt32(ViewState["pageIndex"]);
if (myDataSource.IsFirstPage)
{
this.LinkButton2.Enabled = false;
}
else
{
this.LinkButton2.Enabled =true;
}
if (myDataSource.IsLastPage)
{
this.LinkButton1.Enabled= false;
}
else
{
this.LinkButton1.Enabled = true;
}
this.DataList1.DataSource = myDataSource;
this.DataList1.DataBind();
}
void Page_Click(object sender, CommandEventArgs e)
{
int pageIndex = int.Parse(ViewState["pageIndex"].ToString());
if ("next" == e.CommandName)
{
pageIndex = pageIndex + 1;
}
if ("pre" == e.CommandName)
{
pageIndex = pageIndex - 1;
}
ViewState["pageIndex"] = pageIndex;
this.PageFunc();
}
}
aspx文件：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DataListTest.aspx.cs" Inherits="DataListTest" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form >上一页</asp:LinkButton>
</div>
</form>
</body>
</html>