Undo a drag/drop

[Andy]

What is the best way to undo a drag/drop of a pageviewPage? I have some business rules that need to be enforced either before,during, or after a user tries to rearrange the tabs.

Thanks

[Peter]

Hi Andy,

Thank you for contacting us.

RadPageView does not support undo/redo operations out of the box and you have to implement this functionality on your own. For example, you can subscribe for PageIndexChanged event and add there a logic for the undo operation. Please refer to the code snippet below:

void radPageView1_PageIndexChanged(object sender, RadPageViewIndexChangedEventArgs e)
{
    AddUndoOperation(new PageViewOperation(OperationType.IndexChange, e.NewIndex, e.OldIndex));
}

For further details, consider the this article which describes the memento pattern.

If you have other questions, do not hesitate to ask.

Regards,
Peter
the Telerik team