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

this.BindGridView();

}

}

///

/// GridView排序事件

///

protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)

{

// 从事件参数获取排序数据列

string sortExpression = e.SortExpression.ToString();

// 假定为排序方向为“顺序”

string sortDirection = "ASC";

// “ASC”与事件参数获取到的排序方向进行比较，进行GridView排序方向参数的修改

if (sortExpression == this.GridView1.Attributes["SortExpression"])

{

//获得下一次的排序状态

sortDirection = (this.GridView1.Attributes["SortDirection"].ToString() == sortDirection ? "DESC" : "ASC");

}

// 重新设定GridView排序数据列及排序方向

this.GridView1.Attributes["SortExpression"] = sortExpression;

this.GridView1.Attributes["SortDirection"] = sortDirection;

this.BindGridView();

}

///

/// 绑定到GridView

///

private void BindGridView()

{

// 获取GridView排序数据列及排序方向

string sortExpression = this.GridView1.Attributes["SortExpression"];

string sortDirection = this.GridView1.Attributes["SortDirection"];

// 调用业务数据获取方法

DataTable dtBind = this.getDB();

// 根据GridView排序数据列及排序方向设置显示的默认数据视图

if ((!string.IsNullOrEmpty(sortExpression)) && (!string.IsNullOrEmpty(sortDirection)))

{

dtBind.DefaultView.Sort = string.Format("{0} {1}", sortExpression, sortDirection);

}

// GridView绑定并显示数据

this.GridView1.DataSource = dtBind;

this.GridView1.DataBind();

}

///

/// 获取数据源的方法

///

/// 数据源

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;

}

}