网格中的Devexpress RespositoryLookUpEdit，值的舍入

Question

我有个高速公路控制系统。我想在网格的一个列中使用: repositoryLookUpEdit。我用数据库问题填充repositoryLookUpEdit。此问题返回三列: IdPerson、Name和IdCity。列: IdPerson和Name都有数据，但IdCity必须在应用程序中设置。

在gridcontrol中，IdCity列有文件名: Idcity和columnEdit : repositoryLookUpEdit。- repositoryLookUpEdit有DisplayValue : CityName，ValueMember: IdCity。

我的问题是：

当我在城市的一行值中选择网格，然后转到另一行时，第一行的值就会消失。

我做错什么了？你能给我一些建议吗？

我用Devexpress 9.2。

this.gvPerson = new DevExpress.XtraGrid.Views.Grid.GridView(); 
this.replueCity = new DevExpress.XtraEditors.Repository.RepositoryItemLookUpEdit();
this.replueCity.Columns.AddRange(new DevExpress.XtraEditors.Controls.LookUpColumnInfo[] { new     DevExpress.XtraEditors.Controls.LookUpColumnInfo("IdCity", "IdCity", 20,     DevExpress.Utils.FormatType.None, "", false, DevExpress.Utils.HorzAlignment.Default), new DevExpress.XtraEditors.Controls.LookUpColumnInfo("CityName", "CityName")});
this.replueCity.DisplayMember = "CityName"; 
this.replueCity.Name = "replueCity"; 
this.replueCity.NullText = "[Choose city]"; 
this.replueCity.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.Standard; 
this.replueOceny.ValueMember = "IdCity"; 
// CityColumn this.CityColumn.AppearanceCell.Options.UseTextOptions = true; 
this.CityColumn.AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; 
this.CityColumn.AppearanceCell.TextOptions.VAlignment = DevExpress.Utils.VertAlignment.Center; 
this.CityColumn.Caption = "Ocena"; 
this.CityColumn.ColumnEdit = this.replueCity; 
this.CityColumn.FieldName = "IdCity"; 
this.CityColumn.Name = "IdCityName"; 
this.CityColumn.Visible = true;

Answer 1

您必须为ValueMember (列中的编辑器)设置replueCity。您只为replueOceny设置了它。

在所有三种情况下检查字符串IdCity：它必须写得完全相同(请记住大写！)