How to connnect GridView DataSource over Webpart class?

Question

i try to make myGridView Companent via using WebPArt you know it :

using System.Web.UI.WebControls.WebParts; 
using System.Web.UI.WebControls; 
using System.Web.UI;

namespace MyGridView
{
    public class MyGridView : WebPart
    {
        GridView gv;

        protected override void CreateChildControls()
        {
            gv = new GridView();
            gv.CssClass = "tablestyle";
            this.Controls.Add(gv);
        }

    }
}

i added this GridView on Toolbox. Every Thing is ok . İ want to add my own CSS design to my GridView. But if i drow this gridView from toolbox to aspx page. if i bind my datasource ; Datasource is not show himself.

Like that Main program:

protected void Page_Load(object sender, EventArgs e)
        {
          LoadData loaddata = new LoadData();
          DataTable  dt = loaddata.LoadSQL("conn", "sp_GetAllCategory");
           MyGridView1.datas....   -----> i can not see DataSource why?
        }

i want to see My GridView DataSource. if i write Binding datasource. MyGridView1.DataSource -----> i can not see DataSource why?

Answer 1

Hey,

Because you need to add DataSource to the control; web part doesn't support it by default (basedataboundcontrol class defines DataSource and DataBind). So you need to add this:

public object DataSource
{
   get 
   {
       this.EnsureChildControls();
       return gv.DataSource; 
   }
   set 
   { 
       this.EnsureChildControls();
       gv.DataSource = value; 
   }
}

Typically, you must call EnsureChildControls() so that all child controls are created before you wrap the grid's properties, but I'm not sure if EnsureChildControls is accessible to you. I think it is.