ItemDataBound的用法

原理:在生成datalist列時ItemDataBound觸發，也就是說每生成一列就觸發一次。這個事件的觸發要早於itemcommand.  

datalist裏面嵌套datalist ：

內層控件數據綁定與事件聲明在外層的ItemDataBind中實現

private void dlFileType_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)

        {

                if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 

            {

                  DataList   dl = null;

                 Label   labTypeID = null;

                

                 dl = (DataList)e.Item.FindControl("dlFileList")

                labTypeID = (Label)e.Item.FindControl("lbFileType");

                string typeID = labTypeID.Text.ToString();

　　　    int iTypeID = Convert.ToInt32(typeID);

　　　　string commandText = "select * from tbfile";

　　　　commandText = commandText + " Where TypeID=" + iTypeID;

　　　　//------------

　　　　string connString = ConfigurationSettings.AppSettings["dsn"];

                 SqlConnection conn = new SqlConnection();

　　　　conn.ConnectionString = connString;

　　　　conn.Open();

　　　　SqlDataAdapter  myCommand = new SqlDataAdapter(commandText,conn);

　　　　DataSet ds = new DataSet();

　　　　myCommand .Fill(ds,"tbFile");

　　　　conn.Close();

　　　　//------------

                 dl.DataSource = ds.Tables["tbFile"];;

                 dl.DataBind();

              }

        }

 

 

 protected void dtdaleibie_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            DataList temlist = (DataList)e.Item.FindControl("dtxiaoleibie");
            Label lbvist = (Label)e.Item.FindControl("lbvist");
            int id=Convert.ToInt32(lbvist.Text);
            tongyong ty = new tongyong();
            tongyong.selecontent = "*";
            tongyong.table = "YX_ProductClass";
            tongyong.where = "YX_ParentID="+id;
            tongyong.orderby = "order by YX_OrderID,YX_ID asc";
            temlist.DataSource = ty.search();
            temlist.DataBind();
        }
    }