How to bind to a PasswordBox in MVVM

Question

I have come across a problem with binding to a PasswordBox. It seems it\'s a security risk but I am using the MVVM pattern so I wish to bypass this. I found som

Answer 1

I am using succinct MVVM-friendly solution that hasn't been mentioned yet. First, I name the PasswordBox in XAML:

Then I add a single method call into view constructor:

public LoginWindow()
{
    InitializeComponent();
    ExposeControl.Expose(this, view => view.Password,
        (model, box) => model.SetPasswordBox(box));
}

And that's it. View model will receive notification when it is attached to a view via DataContext and another notification when it is detached. The contents of this notification are configurable via the lambdas, but usually it's just a setter or method call on the view model, passing the problematic control as a parameter.

It can be made MVVM-friendly very easily by having the view expose interface instead of child controls.

The above code relies on helper class published on my blog.