I am trying c# equivalent code, but this "if (GrideView1.SortExpression == button.CommandArgument)" condition always false because of GrideView1.SortExpression does not have any value. Can you please suggest? protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e) { if ((e.Row != null) && e.Row.RowType == DataControlRowType.Header) { foreach (TableCell cell in e.Row.Cells) { if (cell.HasControls()) { LinkButton button = (LinkButton)cell.Controls[0]; if ((button != null)) { Image image = new Image(); image.ImageUrl = "images/upArrow1.jpg"; if (GrideView1.SortExpression == button.CommandArgument) { if (GrideView1.SortDirection == SortDirection.Ascending) { image.ImageUrl = "images/upArrow1.jpg"; } else { image.ImageUrl = "images/downArrow1.jpg"; } } cell.Controls.Add(image); } } } } }