XP 风格的可拖动列、可排序、可改变宽度的DataGrid的例子

利用客户端脚本的优势，我们可以创建出可以拖动列，改变列宽度，显示、隐藏列的XP风格的 DataGrid，下面就是所有的代码。自己调试时请注意修改eMeng.Exam.UltraGrid路径。

查看例子

UltraGrid.aspx

<%@ Page language="c#" Codebehind="UltraGrid.aspx.cs" AutoEventWireup="false"
   Inherits="eMeng.Exam.UltraGrid.UltraGrid" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
   <title>XP 风格的可拖动列、可排序、可改变宽度的DataGrid的例子</title>
   <META http-equiv="content-type" content="text/html; charset=gb2312">
   <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
   <meta name="CODE_LANGUAGE" Content="C#">
   <link rel="stylesheet" type="text/css" href="UltraGrid.css">
   <meta name="vs_defaultClientScript" content="JavaScript">
   <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="DragableXpStyleTable" method="post" runat="server">
   <div align="center" style="PADDING:5px">
   <b> XP 风格的可拖动列、可排序、可改变宽度的DataGrid的例子。</b>
   </div>
   <div id="coolUltraGrid1" runat="server">
   <div class="gridHead">
   <div class="gridRow" id="gridRow" runat="server"></div>
   </div>
   <asp:Literal id="RowItem" runat="server"></asp:Literal>
   </div>
</form>
</body>
</HTML>
UltraGrid.aspx.cs

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace eMeng.Exam.UltraGrid
{
   /// <summary>
   /// UltraGrid 的摘要说明。本例子演示了如何创建可排序、可拖放、可调整宽度的XP风格的DataGrid。
   /// 出自：【孟宪会之精彩世界】
   /// </summary>
   public class UltraGrid : System.Web.UI.Page
   {
   protected System.Web.UI.HtmlControls.HtmlGenericControl gridRow;
   protected System.Web.UI.WebControls.Literal RowItem;
   protected System.Web.UI.HtmlControls.HtmlGenericControl coolUltraGrid1;
   private void Page_Load(object sender, System.EventArgs e)
   {
   // 在此处放置用户代码以初始化页面
   coolUltraGrid1.Attributes.Add("class","coolUltraGrid");
   coolUltraGrid1.Attributes.Add("style","WIDTH: 100%; HEIGHT: 400");
   coolUltraGrid1.Attributes.Add("borderStyle","2");
   coolUltraGrid1.Attributes.Add("altRowColor","oldLace");
   coolUltraGrid1.Attributes.Add("selectionStyle","1");

   /// 请根据你的数据库的设置，修改这里的数据库连接字符串和查询语句。其它不要修改。
   OleDbConnection cn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:""xxx.mdb");
   cn.Open();
   string sqlstring = "SELECT TOP 30 D.Title As 文档标题,D.CreateDate as 发布时间,S.Title AS 所属栏目 ";
   sqlstring += "FROM Document D,Subject S WHERE D.pid=S.id ORDER BY D.CreateDate DESC";
   OleDbCommand cmd = new OleDbCommand(sqlstring,cn);
   OleDbDataReader dr;
   dr=cmd.ExecuteReader(CommandBehavior.CloseConnection);
   ///
   ///组合表头
   ///
   int FieldNumber = dr.FieldCount;
   int ColWidth,Tmp = 0;
   if(FieldNumber == 0)
   Response.End();
   ColWidth = (int)100/FieldNumber;
   string TableHeader = "";
   for(int i=0;i<FieldNumber;i++)
   {
   if(dr.Read())
   {
   if(i==FieldNumber-1)
   TableHeader +="<span width='"+(100-Tmp).ToString()+"%'>"+dr.GetName(i).ToString()+"</span>";
   else
   TableHeader +="<span width='"+ColWidth.ToString()+"%'>"+dr.GetName(i).ToString()+"</span>";
   Tmp+=ColWidth;
   }
   }
   gridRow.InnerHtml=TableHeader;
   int RowNumber = 1;
   TableHeader = "<div class='gridBody'>";
   while(dr.Read())
   {
   TableHeader += "<div class='gridRow' id='row"+RowNumber.ToString()+"'>";
   for(int i=0;i<FieldNumber;i++)
   {
   TableHeader +="<span>"+dr.GetValue(i).ToString()+"</span>";
   }
   TableHeader += "</div>";
   RowNumber++;
   }
   TableHeader += "</div>";
   RowItem.Text=TableHeader;
   cn.Close();
   }
#region Web Form Designer generated code
   override protected void OnInit(EventArgs e)
   {
   //
   // CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
   }

   /// <summary>
   /// 设计器支持所需的方法 - 不要使用代码编辑器修改
   /// 此方法的内容。
   /// </summary>
   private void InitializeComponent()
   {
   this.Load += new System.EventHandler(this.Page_Load);

   }
#endregion
   }
}