如何從RadTreeList UpdateCommand中找到DataKeyValue？

Question

我在更新時如何找到DataKey？我試過一切...

Private Sub rtlAccounts_UpdateCommand(ByVal sender As Object, ByVal e As Telerik.Web.UI.TreeListCommandEventArgs) Handles rtlAccounts.UpdateCommand 
    Dim txtAccountDescription As RadTextBox = TryCast(e.Item.FindControl("txtAccountDescription"), RadTextBox) 
    Dim txtAdminName As RadTextBox = TryCast(e.Item.FindControl("txtAdminName"), RadTextBox) 
    Dim txtAdminEmail As RadTextBox = TryCast(e.Item.FindControl("txtAdminEmail"), RadTextBox) 
    Dim rcbStatus As RadComboBox = TryCast(e.Item.FindControl("rcbStatus"), RadComboBox) 
    Dim rntDocRetention As RadNumericTextBox = TryCast(e.Item.FindControl("rntDocRetention"), RadNumericTextBox) 

    Dim item As TreeListEditableItem = TryCast(e.Item, TreeListEditableItem) 
    Dim MyDataKeyID As String = 'Now what??? 
End Sub 

也想知道如何從InsertCommand和UpdateCommand中找到ParentDataKeyValue。

Answer 1

爲了得到DataKeyValue和ParentDataKeyValue，你的最後兩行更改爲以下：

Dim editedItem As TreeListEditFormItem = CType(e.Item, TreeListEditFormItem) 
Dim dataKeyValue As String = _ 
    editedItem.ParentItem.GetDataKeyValue("EmployeeID").ToString() 
Dim parentDataKeyValue As String = _ 
    editedItem.ParentItem.GetParentDataKeyValue("ReportsTo").ToString() 

每Telerik's documentation，如果您正在使用就地編輯模式下，你應該投的TreeListEditableItem到TreeListDataItem;如果您正在使用編輯表格，則應將TreeListEditableItem轉換爲TreeListEditFormItem。

爲了GetDataKeyValue和GetParentDataKeyValue回到你想要的，你必須定義一個RadTreeList時設置它們在各自的DataKeyNames和ParentDataKeyNames值的值：

<telerik:RadTreeList ID="EmployeeTreeList" runat="server" 
    DataKeyNames="EmployeeID" 
    ParentDataKeyNames="ReportsTo"> 
    <Columns> 
     <%-- Add column definitions here --%> 
    </Columns> 
</telerik:RadTreeList>