GridView属性、方法和事件

GridView属性、方法和事件
1．GridView属性
GridView控件常用属性及说明如表1所示。
下面对比较重要的属性进行详细介绍。
（1）AllowPaging属性。用于获取或设置一个值，该值指示是否启用分页功能。
语法：
public virtual bool AllowPaging { get; set; }
属性值：如果启用分页功能，则为True；否则为False。默认值为False。
示例
AllowPaging属性的使用
本示例实现的是分页显示商品信息。示例运行结果如图1所示。

图1 AllowPaging属性的使用
程序代码如下。
Default.aspx页面在初始化时，将数据表中数据绑定到GridView控件中并显示出来。Default.aspx页Page_Load事件代码如下：
protected void Page_Load(object sender, EventArgs e)
{
string sqlStr = "select GoodsID as 商品ID,GoodsName as 商品名称,GoodsIntroduce as 商品介绍," + "Goods Price as 商品价格,GoodsIsNew as 是否推荐 from tb_GoodsInfo";
SqlConnection myConn = GetConnection();
SqlDataAdapter myAdapter = new SqlDataAdapter(sqlStr, myConn);
DataSet myds = new DataSet();
myConn.Open();
myAdapter.Fill(myds, "tb_GoodsInfo");
GridView1.AllowPaging = True;
GridView1.AutoGenerateColumns = True;
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "商品ID" };
GridView1.DataBind();
}
完整程序代码如下：
★ ★★★★Default.aspx设计文件完整程序代码★★★★★
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>











分页显示商品信息

















★ ★★★★Default.aspx代码文件完整程序代码★★★★★
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string sqlStr = "select GoodsID as 商品ID,GoodsName as 商品名称,GoodsIntroduce as 商品介绍,"
+ "GoodsPrice as 商品价格,GoodsIsNew as 是否推荐 from tb_GoodsInfo";
SqlConnection myConn = GetConnection();
SqlDataAdapter myAdapter = new SqlDataAdapter(sqlStr, myConn);
DataSet myds = new DataSet();
myConn.Open();
myAdapter.Fill(myds, "tb_GoodsInfo");
GridView1.AllowPaging = true;
GridView1.AutoGenerateColumns = true;
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "商品ID" };
GridView1.DataBind();
}
public SqlConnection GetConnection()
{
string myStr = ConfigurationManager.AppSettings["ConnectionString"].ToString();