How to cancel an edit to an object using MVVM?

Question

How can I implement cancelation of editing an object using MVVM.

For example: I have a list of customers. I choose one customer an click the button \"Edit\", a dialo

Answer 1

In this article, Raul just reload the object from the DB. I guess it's less trouble than the solution Kent proposes.

    internal void Cancel(CustomerWorkspaceViewModel cvm)
    {
        Mainardi.Model.ObjectMapping.Individual dc = cvm.DataContext 
                                 as Mainardi.Model.ObjectMapping.Individual;

        int index = 0;

        if (dc.ContactID > 0 && dc.CustomerID > 0)
        {
            index = _customerCollectionViewModel.List.IndexOf(dc);
            _customerCollectionViewModel.List[index] = 
                                  _customerBAL.GetCustomerById(dc.CustomerID);
        }

        Collection.Remove(cvm);
    }