protected void Page_Load(object sender, EventArgs e)
    {
        loadDynamicGrid();
    }

private void loadDynamicGrid()
    {
        #region Code for filling datatable
        //instance of datatable
        DataTable dt = new DataTable();
        //instance of datacolumn
        DataColumn dc = new DataColumn("ID",typeof(System.Int32));
        dc.AutoIncrement = true;
        dt.Columns.Add(dc);
        dc = new DataColumn("NAME", typeof(System.String));
        dt.Columns.Add(dc);
        for (int i = 0; i < 5; i++)
        {
            //creating instance for datarow
            DataRow dr = dt.NewRow ();
            dr["NAME"] = "Dharma";
            dr["ID"] = i;
            dt.Rows.Add(dr);
        }
        #endregion
        //loop through columns create boundfield dynamically
        foreach (DataColumn col in dt.Columns)
        {
            BoundField bfield = new BoundField();
            bfield.DataField = dc.ColumnName;
            bfield.HeaderText = dc.ColumnName;
            dngrview.Columns.Add(bfield);
        }
        dngrview.DataSource = dt;
        dngrview.DataBind();
    }