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GridView实现自动排序带上下箭头

2016-12-29 00:00 477 查看

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewSort.aspx.cs" Inherits="GridViewSort" %>

<!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 id="Head1" runat="server">
<title>GridView排序</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
ForeColor="#333333" GridLines="None" AllowSorting="True" OnRowCreated="GridView1_RowCreated"
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" />
</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" />
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class GridViewSort : System.Web.UI.Page
{
#region 私有变量
protected string JS = "";
string SortExpression = "";//排序表达式
string SortDirection = "";//排序方向
#endregion

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridView();
}
}

#region 事件
/// <summary>
/// 生成排序列旁边的小箭头
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
foreach (TableCell tc in e.Row.Cells)
{
if (tc.Controls.Count > 0)//这里要判断一下此时是不是已经生成了linkbutton
{
string s1 = ((LinkButton)tc.Controls[0]).Text;
((LinkButton)tc.Controls[0]).Text = s1.Replace(s1, s1 + "<font face='Webdings'>5</font>");
}
if (tc.Controls.Count > 0 && tc.Controls[0].GetType().ToString() == "System.Web.UI.WebControls.DataControlLinkButton")
{
if (((LinkButton)tc.Controls[0]).CommandArgument == SortExpression)
{
string s2 = ((LinkButton)tc.Controls[0]).Text;
if (SortDirection == "DESC")
{
((LinkButton)tc.Controls[0]).Text = s2.Replace("5", "6");
}
}
}
}
}
}
/// <summary>
/// 排序方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
//得到排序条件
SortExpression = e.SortExpression.ToString();
//设置排序为升序
SortDirection = "ASC";
//当前排序为升序时,修改成降序
if (this.GridView1.Attributes["SortDirection"] == "ASC")
{
SortDirection = "DESC";
}
//设置GridView的排序状态
this.GridView1.Attributes["SortExpression"] = SortExpression;
this.GridView1.Attributes["SortDirection"] = SortDirection;
BindGridView();
}
#endregion

#region 私有方法
/// <summary>
/// 根据排序条件重新绑定GridView
/// </summary>
private void BindGridView()
{
string sortExpression = this.GridView1.Attributes["SortExpression"];
string sortDirection = this.GridView1.Attributes["SortDirection"];
DataTable dt = getDB();
if ((!string.IsNullOrEmpty(sortExpression)) && (!string.IsNullOrEmpty(sortDirection)))
{
dt.DefaultView.Sort = string.Format("{0} {1}", sortExpression, sortDirection);
}
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
#endregion

/// <summary>
/// 获取数据源的方法
/// </summary>
/// <returns>数据源</returns>
private DataTable getDB()
{
DataTable dt = new DataTable();
dt.Columns.Add("id");
dt.Columns.Add("name");
dt.Columns.Add("age");
dt.Rows.Add(new object[] { "000001", "hekui", "26" });
dt.Rows.Add(new object[] { "000002", "zhangyu", "26" });
dt.Rows.Add(new object[] { "000003", "zhukundian", "27" });
dt.Rows.Add(new object[] { "000004", "liyang", "25" });
dt.Rows.Add(new object[] { "000005", "caili", "27" });
return dt;
}
}

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