Devpress 小技巧1

1. 列单选事件
   

   1. CheckEdit.Properties.CheckStyle = DevExpress.XtraEditors.Controls.CheckStyles.Radio;
   
   int checkedRowIndex = -1;
         private void gridView1_CellValueChanging(object sender, DevExpress.XtraGrid.Views.Base.CellValueChangedEventArgs e)
         {
             GridView view = sender as GridView;
             if (e.Column.FieldName == "IsSelected" && (bool)e.Value)
             {
                 int rowHandle = view.GetRowHandle(checkedRowIndex);
                 view.SetRowCellValue(rowHandle, "IsSelected", false);
                 checkedRowIndex = view.GetDataSourceRowIndex(e.RowHandle);
             }
         }

2. 行单选事件
   此外，确保在您所设定的所有单选按钮设置RadioGroupIndex相同的索引编号。
3. 数值类型保留2位小数,即使小数位最后面是0
   {0:f2}
4. 自定义列展示内容

private void gridView1_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e)
        {
            if (e.Column.FieldName == "Associated")
            {
                if (e.Value != null)
                {
                    GridView view = sender as GridView;
                    switch (e.Value.ToString().Trim().ToLower())
                    {
                        case "true":
                            e.DisplayText = "已关联";
                            break;
                        default:
                            {
                                if (view.GetListSourceRowCellValue(e.ListSourceRowIndex, "IsSplit").ToString().ToLower() == "true" &&
                                    view.GetListSourceRowCellValue(e.ListSourceRowIndex, "ParentID").ToString() == "00000000-0000-0000-0000-000000000000")
                                {
                                    e.DisplayText = "";
                                }
                                else
                                {
                                    e.DisplayText = "未关联";
                                }
                            }
                            break;
                    }
                    // 如果已拆单 并且 parent = IsSplit00000000-0000-0000-0000-000000000000 那么


                    /**/
                }
            }
            else if (e.Column.FieldName == "IsSplit")
            {
                if (e.Value != null)
                {
                    switch (e.Value.ToString().Trim().ToLower())
                    {
                        case "true":
                            e.DisplayText = "已拆分";
                            break;
                        case "false":
                            e.DisplayText = "未拆分";
                            break;
                        default:
                            e.DisplayText = "未拆分";
                            break;
                    }
                }
            }
        }