DataGrid 單元格輸入驗證 由ValidatingEditor事件完成

private void gdv_reguline_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e)
        {
            int col = ((DevExpress.XtraGrid.Views.Grid.GridView)sender).FocusedColumn.AbsoluteIndex;
            if (col == 4 || col == 5)
            {
                object v = e.Value;
                int tm;
                if (v != null && (!Int32.TryParse(v.ToString(),out tm) || tm<0 )) //自定義驗證邏輯
                {
                    e.Valid = false; //控制是否通過驗證的開關

                    e.ErrorText = "必須輸入正整數！"; //提示的驗證失敗的原因
                }
            }
        }