New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Accessing Client Changes at the Server

Client side changes are available on the server side after postback. You can use the ClientChanges property of RadTabStrip to access them. The ClientChanges property of RadTabStrip returns a collection of objects of type ClientOperation.An operation has two properties:

  • Item - the item which has been affected by the client operation;

  • Type - the type of the operation which is one of the following four cases:

  • Update - when a property is set on the the client through methods such as set_text(), set_value(), enable(), disable(), etc.: tab.disable();

  • Remove - when the remove client method is called: tabstrip.get_tabs().remove(tab1);

  • Insert - when the addclient method is called: tabstrip.get_tabs().add(tab1);

  • Clear - when a tab with child tabs calls the clear() method: parentTab.get_tabs().clear(). If the parent tab has no child tabs, the ClientChanges collection is not altered.

Note that you need to call the trackChanges () and commitChanges () client methods of RadTabStrip in order to be able to access the changes on the server via the ClientChanges property.


The code snippet below enumerates through all operations in the ClientChanges collection and utilizes both the Item and Type properties. For a complete demo, please see the client-side Add/Remove/Disable Items example.

foreach (ClientOperation<RadTab> operation in RadTabStrip1.ClientChanges)
    RadTab tab = operation.Item;
    switch (operation.Type)
        case ClientOperationType.Insert:
        case ClientOperationType.Remove:
        case ClientOperationType.Update:
        UpdateClientOperation<RadTab> update = operation as UpdateClientOperation<RadTab>;
        case ClientOperationType.Clear:
For Each operation As ClientOperation(Of RadTab) In RadTabStrip1.ClientChanges
    Dim tab As RadTab = operation.Item
    Select Case operation.Type
        Case ClientOperationType.Insert
        Exit Select
        Case ClientOperationType.Remove
        Exit Select
        Case ClientOperationType.Update
        Dim update As UpdateClientOperation(Of RadTab) = TryCast(operation, UpdateClientOperation(Of RadTab))
        Exit Select
        Case ClientOperationType.Clear
        Exit Select
    End Select

See Also

In this article