DataGrid常用小技巧

当鼠标经过某一行时,使其突出显示,增加视觉效果,代码如下:
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
   {
    e.Item.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#9CCBF7'");
    e.Item.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

   }

鼠标经过的行颜色为#9CCBF7,鼠标移开是又变回原来颜色,这里用c先保存原来的颠值!

以上代码放在ItemDataBind事件中即可

datagrid删除确认

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   LinkButton mydel=(LinkButton)e.Item.FindControl ("btndel");
   if(mydel!=null)
   {
    mydel.Attributes .Add ("onclick","return confirm('确认删除吗？');");
   }
  }

datagrid排序

private void DataGrid1_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
  {
   DataSet ds=new DataSet();
   ds=DB.getdataset ("select * from mytab");
   DataView dv=ds.Tables [0].DefaultView ;
   dv.Sort=e.SortExpression ;
   DataGrid1 .DataSource =dv;
   DataGrid1 .DataBind ();
  
  }

实现双向排序...

if(ViewState["order"]==null)
   {
    ViewState["order"]="asc";
   }
   else
   {
    if(ViewState["order"].ToString ()=="asc")
    {
     ViewState["order"]="desc";

    }
    else
    {
     ViewState["order"]="asc";
    }

   }
   SqlConnection mycon=DB.creatcon ();
   SqlDataAdapter da=new SqlDataAdapter ("select * from student order by studentid desc ",mycon);
   DataSet ds=new DataSet() ;
   da.Fill (ds,"tabnew");
   DataView dv=ds.Tables [0].DefaultView ;
   dv.Sort =e.SortExpression+" "+ViewState["order"].ToString();
   DataGrid1.DataSource =dv;
   DataGrid1 .DataBind ();