private static bool ValidateAndSelect(ref DataGridView dgv, DataGridViewCellMouseEventArgs e) { if (null == e || 0 > e.RowIndex || 0 > e.ColumnIndex || dgv.RowCount <= e.RowIndex || dgv.ColumnCount <= e.ColumnIndex) { return(false); } DgvHelpers.SelectCell(ref dgv, e.RowIndex, e.ColumnIndex); return(true); }