DataGrid单元格移动变色,点击变色,双击取消颜色,排序.

实现:
1.当鼠标移动到DataGrid的单元格时,单元格变色,并且单元格里的字体同时变色,鼠标变为手的形状.鼠标移出单元格,恢复原样.
2.当鼠标点击DataGrid的单元格时,单元格变色,单元格上的显示字体变色;当点击另一个单元格时,前一个单元格以及字体颜色恢复原样,此时的单元格变色,字体变色.
3.当双击DataGrid上单击时变色的单元格时,颜色取消,恢复原样.
4.DataGrid按顺序(ASC)和倒序(DESC)排序,并且DataGrid排序的列头显示排序标志.
 排序必须注意:列头名必须和排序的字段名一致,否则将不会显示排序标志.

DataGrid点击变色的注册事件在dbOrders_ItemDataBound事件中注册.
if(e.Item.ItemType==ListItemType.Item || e.Item.ItemType==ListItemType.AlternatingItem)
   {
    e.Item.Attributes.Add("onmouseover","tdOver(this)");
    e.Item.Attributes.Add("onmouseout","tdOut(this)");
    e.Item.Attributes.Add("onclick","tdColor(this)");
    e.Item.Attributes.Add("ondblclick","tdColorDbl(this)");
   }
而之间的代码可以保存为JS文件,然后使用
  

   
    
     DataGrid移动,单击变色
    
    
            BorderStyle="None" AutoGenerateColumns="False" AllowPaging="True">
       
       
       
       
        
        
        
        
        
        
       
       
      
    
   
  

 


CS代码:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
namespace NetTest.DataGridExample
{
 ///

 /// DataGridColor 的摘要说明。
 ///

 public class DataGridColor : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.DataGrid dbOrders;
  private string strConn=System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"].ToString();
  private void Page_Load(object sender, System.EventArgs e)
  {
   if(!IsPostBack)
   {
    ViewState["SortExpression"]="";
    ViewState["sort"]="desc";
    
   }
   BindData();
  }

  #region Web 窗体设计器生成的代码
  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);
  }
  
  ///

  /// 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。
  ///

  private void InitializeComponent()
  {   
   this.dbOrders.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dbOrders_ItemCreated);
   this.dbOrders.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.dbOrders_PageIndexChanged);
   this.dbOrders.SortCommand += new System.Web.UI.WebControls.DataGridSortCommandEventHandler(this.dbOrders_SortCommand);
   this.dbOrders.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dbOrders_ItemDataBound);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void BindData()
  {
   SqlConnection Conn=new SqlConnection(strConn);
   SqlCommand Cmd=new SqlCommand("select * from Orders",Conn);
   SqlDataAdapter da=new SqlDataAdapter();
   da.SelectCommand=Cmd;
   DataSet ds=new DataSet();
   Conn.Open();
   da.Fill(ds);
   Conn.Close();
   DataTable dt=ds.Tables[0];
   if(ViewState["SortExpression"].ToString()!="")
   {
    dt.DefaultView.Sort=ViewState["SortExpression"].ToString()+" "+ViewState["sort"].ToString();
   }
   
   dbOrders.DataSource=dt;
   dbOrders.DataBind();
  }

  private void dbOrders_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
  {
   string sort=string.Empty;
   if(ViewState["SortExpression"].ToString()==e.SortExpression.ToString())
   {
    if(ViewState["sort"].ToString()=="asc")
    {
     sort="desc";
    }
    else
    {
     sort="asc";
    }
   }
   else
   {
    if(ViewState["sort"].ToString()=="asc")
    {
     sort="desc";
    }
    else
    {
     sort="asc";
    }
   }
   ViewState["sort"]=sort;
   ViewState["SortExpression"]=e.SortExpression;
   BindData();
  }

  private void dbOrders_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if (e.Item.ItemType==ListItemType.Header)
   {
    //排序
    foreach(TableCell c in e.Item.Cells)
    {

     if (c.Controls.Count >0 && c.Controls[0].GetType().ToString()=="System.Web.UI.WebControls.DataGridLinkButton")
     {
      if (((LinkButton)c.Controls[0]).Text==(string)ViewState["SortExpression"])
      {
       Label l=new Label();
       l.Font.Name="Webdings";
       if ((string)ViewState["sort"]=="asc")
        l.Text="5";
       else
        l.Text="6";
       c.Controls.Add(l);
      }
     }
    }
   }
  }

  private void dbOrders_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
  {
   dbOrders.CurrentPageIndex=e.NewPageIndex;
   DataBind();
  }

  private void dbOrders_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if(e.Item.ItemType==ListItemType.Item || e.Item.ItemType==ListItemType.AlternatingItem)
   {
    e.Item.Attributes.Add("onmouseover","tdOver(this)");
    e.Item.Attributes.Add("onmouseout","tdOut(this)");
    e.Item.Attributes.Add("onclick","tdColor(this)");
    e.Item.Attributes.Add("ondblclick","tdColorDbl(this)");
   }
  }
 }
}