Devexpress:在GridControl中使用RepositoryItemGridLookUpEdit【转】

转至：http://blog.csdn.net/duanzi_peng/article/details/76176767 感谢大神

 RepositoryItemGridLookUpEdit 用于在GridControl中指定一列为多列数据下拉框，选择的之后只显示指定的列。该Devexpress版本为15.2.

定义名为TestModel类：

 public class TestModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int SizeTypeId { get; set; }

定义TestModel集合：

 public static List GenerateList()
         {
             return new List() {
                 new TestModel() {
                       Id=1,
                       Name=" 桌子",
                 },
                 new TestModel() {
                      Id=2,
                       Name=" 椅子",
                 },
                 new TestModel() {
                      Id=3,
                      Name="凳子",
                 }
             };
         }

定义RepositoryItemGridLookUpEdit 数据源：

 ///
         /// 生成包含3列的DataTable
         ///
         public static DataTable GenerateDT()
         {
             DataTable dt = new DataTable("TestTable");
             dt.Columns.Add("Id", typeof(int));
             dt.Columns.Add("Name", typeof(string));
             dt.Columns.Add("Type", typeof(string));
             for (int i = 1; i <= 100; i++)
             {
                 DataRow rowg = dt.NewRow();
                 rowg["Id"] = i;
                 rowg["Name"] = $"{i * 12},{i * 10}";
                 int size = i * 10 * 10;
                 if (size < 3000)
                 {
                     rowg["Type"] = "小号";
                 }
                 if (size >= 3000 && size < 5000)
                 {
                     rowg["Type"] = "中号";
                 }
                 if (size >= 5000)
                 {
                     rowg["Type"] = "大号";
                 }
                 dt.Rows.Add(rowg);
             }
             return dt;
         }

在界面上拖放一个GridControl，窗口加载中定义列：

 ///
         /// 数据源
         ///
         private List list = new List();
         GridColumn gcId = new GridColumn();
         private void GridControlForm_Load(object sender, EventArgs e)
         {
             list.AddRange(GenerateList());
             gv.OptionsBehavior.AllowAddRows = DevExpress.Utils.DefaultBoolean.True;
             gcId.Caption = "编号";
             gcId.FieldName = "Id";
             gcId.VisibleIndex = 0;
             gcId.Width = 30;
             this.gv.Columns.Add(gcId);

             GridColumn gcName = gv.Columns.AddField("Name");
             gcName.Caption = "名称";
             gcName.VisibleIndex = 1;
             this.gv.Columns.Add(gcName);
             //尺寸类型 GridLookUpEdit
             RepositoryItemGridLookUpEdit riglup = new RepositoryItemGridLookUpEdit();
             riglup.DataSource = GenerateDT();
             riglup.DisplayMember = "Name";
             riglup.ValueMember = "Id";
             // 为riglup增加3列
             GridColumn riglupgcId = riglup.View.Columns.AddField("Id");
             riglupgcId.Caption = "编号";
             riglupgcId.VisibleIndex = 0;
             riglupgcId.Width = 30;

             GridColumn riglupgcName = riglup.View.Columns.AddField("Name");
             riglupgcName.Caption = "名称";
             riglupgcName.VisibleIndex = 1;

             GridColumn riglupgcType = riglup.View.Columns.AddField("Type");
             riglupgcType.Caption = "尺寸";
             riglupgcType.VisibleIndex = 2;
             // 添加到集合
             riglup.View.Columns.Add(riglupgcId);
             riglup.View.Columns.Add(riglupgcName);
             riglup.View.Columns.Add(riglupgcType);

             GridColumn gcSizeType = gv.Columns.AddField("SizeTypeId");
             gcSizeType.VisibleIndex = 2;
             gcSizeType.Caption = "尺寸";
             gcSizeType.ColumnEdit = riglup;

             this.gv.Columns.Add(gcSizeType);
             this.gc.DataSource = list;}

下拉列中自定义列使用如下代码：

 GridColumn riglupgcId = riglup.View.Columns.AddField("Id");
             riglupgcId.Caption = "编号";
             riglupgcId.VisibleIndex = 0;