Untitled

Should a ViewModel be initialized via constructor, properties, or method call
public string Name
{
    get
    {
        if (_customerModel == null) // Check model availability
        {
            return string.Empty;
        }

        _customerModel.Name;
    }
}

var viewModel = new MyViewModel();
this.DataContext = viewModel;
// Wrap in an async call if necessary
Task.Factory.StartNew(() => viewModel.InitializeWithAccountNumber(accountNumber));