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gridview自動(dòng)排序示例分享

更新時(shí)間：2014年01月15日 10:56:50 作者：

GridView自帶了數(shù)據(jù)排序功能。在設(shè)計(jì)視圖下，只能對(duì)GridView的排序數(shù)據(jù)列和排序方向進(jìn)行靜態(tài)設(shè)置。在后臺(tái)程序中，則需要用Attributes方式對(duì)GridView的這兩個(gè)屬性進(jìn)行動(dòng)態(tài)設(shè)置

示例如下：前臺(tái)

復(fù)制代碼代碼如下:

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

前臺(tái)注意點(diǎn)：
需要對(duì)GridView啟用AllowSorting、設(shè)置OnSorting事件，對(duì)需要排序的列設(shè)定SortExpression屬性。

后臺(tái)

復(fù)制代碼代碼如下:

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)
        {
            // 設(shè)定初始排序參數(shù)值

            // 錯(cuò)誤的屬性設(shè)置方法：SortExpression、SortDirection均是GridView只讀屬性，無(wú)法直接賦值。
            //this.GridView1.SortExpression = "id";
            //this.GridView1.SortDirection = "ASC";

            // 正確的屬性設(shè)置方法
            this.GridView1.Attributes.Add("SortExpression", "id");
            this.GridView1.Attributes.Add("SortDirection", "ASC");

            // 綁定數(shù)據(jù)源到GridView
            this.BindGridView();
        }
    }

    /// <summary>
    /// GridView排序事件
    /// </summary>
    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
    {
        // 從事件參數(shù)獲取排序數(shù)據(jù)列
        string sortExpression = e.SortExpression.ToString();

// 假定為排序方向?yàn)椤绊樞颉?BR> string sortDirection = "ASC";

        // “ASC”與事件參數(shù)獲取到的排序方向進(jìn)行比較，進(jìn)行GridView排序方向參數(shù)的修改
        if (sortExpression == this.GridView1.Attributes["SortExpression"])
        {
            //獲得下一次的排序狀態(tài)
            sortDirection = (this.GridView1.Attributes["SortDirection"].ToString() == sortDirection ? "DESC" : "ASC");
        }

        // 重新設(shè)定GridView排序數(shù)據(jù)列及排序方向
        this.GridView1.Attributes["SortExpression"] = sortExpression;
        this.GridView1.Attributes["SortDirection"] = sortDirection;

this.BindGridView();
}

    /// <summary>
    /// 綁定到GridView
    /// </summary>
    private void BindGridView()
    {
        // 獲取GridView排序數(shù)據(jù)列及排序方向
        string sortExpression = this.GridView1.Attributes["SortExpression"];
        string sortDirection = this.GridView1.Attributes["SortDirection"];

// 調(diào)用業(yè)務(wù)數(shù)據(jù)獲取方法
DataTable dtBind = this.getDB();

        // 根據(jù)GridView排序數(shù)據(jù)列及排序方向設(shè)置顯示的默認(rèn)數(shù)據(jù)視圖
        if ((!string.IsNullOrEmpty(sortExpression)) && (!string.IsNullOrEmpty(sortDirection)))
        {
            dtBind.DefaultView.Sort = string.Format("{0} {1}", sortExpression, sortDirection);
        }

        // GridView綁定并顯示數(shù)據(jù)
        this.GridView1.DataSource = dtBind;
        this.GridView1.DataBind();
    }

    /// <summary>
    /// 獲取數(shù)據(jù)源的方法
    /// </summary>
    /// <returns>數(shù)據(jù)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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