GridView自带了数据排序功能。在设计视图下,只能对GridView的排序数据列和排序方向进行静态设置。在后台程序中,则需要用Attributes方式对GridView的这两个属性进行动态设置。
示例如下:
(前台)
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页<title>
<head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None" AllowSorting="True" OnSorting="GridView1_Sorting">
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="id" HeaderText="ID" SortExpression="id" />
<asp:BoundField DataField="name" HeaderText="NAME" SortExpression="name" />
<asp:BoundField DataField="age" HeaderText="AGE" SortExpression="age" />
</< span>Columns>
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
</< span>asp:GridView>
</< span>div>
</< span>form>
</< span>body>
</< span>html>
前台注意点:
需要对GridView启用AllowSorting、设置OnSorting事件,对需要排序的列设定SortExpression属性。
(后台)
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// 设定初始排序参数值
// 错误的属性设置方法:SortExpression、SortDirection均是GridView只读属性,无法直接赋值。
//this.GridView1.SortExpression = "id";
//this.GridView1.SortDirection = "ASC";
// 正确的属性设置方法
this.GridView1.Attributes.Add("SortExpression", "id");
this.GridView1.Attributes.Add("SortDirection", "ASC");
// 绑定数据源到GridView