Telerik Treelist NeedDataSource不加載數據

我想加載treelist，一切正常，但我總是看到「沒有記錄顯示」。Telerik Treelist NeedDataSource不加載數據

這裏是控制：

<telerik:RadTreeList ID="trlProductGroups" runat="server" AllowPaging="true" PageSize="5" 
     DataKeyNames="ID" ParentDataKeyNames="PARENT_ID" AutoGenerateColumns="false" 
     OnInsertCommand="trlProductGroups_InsertCommand" OnNeedDataSource="trlProductGroups_NeedDataSource" 
     OnUpdateCommand="trlProductGroups_UpdateCommand" OnDeleteCommand="trlProductGroups_DeleteCommand"> 
     <Columns> 
      <telerik:TreeListEditCommandColumn UniqueName="InsertCommandColumn" ButtonType="ImageButton" 
       HeaderStyle-Width="60px" ItemStyle-HorizontalAlign="Center" /> 
      <telerik:TreeListEditCommandColumn UniqueName="EditCommandColumn" ButtonType="ImageButton"> 
       <ItemStyle CssClass="MyImageButton" /> 
      </telerik:TreeListEditCommandColumn> 
      <telerik:TreeListButtonColumn UniqueName="DeleteCommandColumn" Text="Delete" CommandName="Delete" 
       ButtonType="ImageButton" /> 
      <telerik:TreeListBoundColumn DataField="ID" UniqueName="ID" HeaderText="Grup ID" 
       ReadOnly="true" /> 
      <%-- <telerik:TreeListTemplateColumn DataField="GROUP_NAME" UniqueName="GROUP_NAME" HeaderText="Grup Adı"> 
       <EditItemTemplate> 
        <asp:TextBox ID="txtGroupName" runat="server"></asp:TextBox> 
       </EditItemTemplate> 
      </telerik:TreeListTemplateColumn>--%> 
      <telerik:TreeListBoundColumn DataField="GROUP_NAME" UniqueName="GROUP_NAME" HeaderText="Grup Adı" /> 
      <telerik:TreeListBoundColumn DataField="PARENT_ID" UniqueName="PARENT_ID" HeaderText="Ana Grup ID" 
       ReadOnly="true" /> 
     </Columns> 
    </telerik:RadTreeList>

這裏是NeedDataSource代碼：

protected void trlProductGroups_NeedDataSource(object sender, TreeListNeedDataSourceEventArgs e) 
     { 

      WebAppTest.Objects.ProductGroups pGroups = new WebAppTest.Objects.ProductGroups(); 
      DataTable dt = pGroups.SelectData(null, string.Empty); 
      trlProductGroups.DataSource = dt; 
     }

我可以看到在數據表中的數據，但樹形列表不會加載數據。我犯了什麼錯誤嗎？

感謝

來源

2011-12-18 mehmetserif

你的代碼是正確的。它不是關於RadScriptManager和RadAjaxLoadingPanel。你能發佈DataTable的屏幕截圖嗎？ – Win 2011-12-19 16:35:16

這是必須，至少一個數據在datasoruce空id_parent值。也許它有幫助。

來源

2012-07-06 08:09:41

Telerik Treelist NeedDataSource不加載數據

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