How to set a non binded datatable as datasource of Datagridview...?

DataTable dt = null;
            DataRow dr = null;

            DataColumn idCoulumn = null;
            DataColumn nameCoulumn = null;
            DataColumn Description  = null;
            //int i = 0;

            dt = new DataTable();
            idCoulumn = new DataColumn("ID", Type.GetType("System.Int32"));
            nameCoulumn = new DataColumn("Name", Type.GetType("System.String"));
            Description = new DataColumn("Description",Type.GetType("System.String"));

            dt.Columns.Add(idCoulumn);
            dt.Columns.Add(nameCoulumn);
            dt.Columns.Add(Description);

            dr = dt.NewRow();
            dr["ID"] = 1;
            dr["Name"] = "Name1";
            dr["Description"]="Good";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr["ID"] = 2;
            dr["Name"] = "Name2";
            dr["Description"] = "VeryGood";
            dt.Rows.Add(dr);
            
            GridView1.DataSource = dt;
            GridView1.DataBind();