【求助】RepositoryItemTreeListLookUpEdit为何无法显示添加的Node？

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[C#] 纯文本查看 复制代码

            RepositoryItemTreeListLookUpEdit resryItemTLLpEdit = new RepositoryItemTreeListLookUpEdit();
            TreeListColumn tlCol1 = resryItemTLLpEdit.TreeList.Columns.AddField("Id");
            tlCol1.Caption = "ID";
            tlCol1.Visible = true;
            TreeListColumn tlCol = resryItemTLLpEdit.TreeList.Columns.AddField("AppChsName");
            tlCol.Caption = "AppChsName";
            tlCol.Visible = true;

            TreeListNode tlNode1 = resryItemTLLpEdit.TreeList.Nodes.Add(new object[] { 123, "234" });
            tlNode1.Nodes.Add(new object[] { 567, "789" });
            resryItemTLLpEdit.TreeList.Nodes.Add(new object[] { 345, "345" });
            resryItemTLLpEdit.DisplayMember = "AppChsName";
            resryItemTLLpEdit.ValueMember = "AppChsName";

            treeList1.RepositoryItems.Add(resryItemTLLpEdit);
            treeList1.Columns["treeListColumn3"].ColumnEdit = resryItemTLLpEdit;

在TreeList.Nodes下Add三个Node，检查TreeList.VisibleNodesCount的数量也为3，为何运行后RepositoryItemTreeListLookUpEdit弹出时选项内容为空？