code for upload image and post image in grid view using tab control

public void Binddata()
    {
        BEL objbel = new BEL();
        BLL objbll = new BLL();
        SqlDataAdapter sda = new SqlDataAdapter();
        DataTable dt = new DataTable();
        //sda.Fill(dt);
        //  DataTable dt1 = objbll.selectdata1(objbel);
        GridView1.DataSource = dt;
       //  GridView1.DataSource = dt1;
        GridView1.DataBind();