Clear / Erase TextBox Content With Button Click Event

Question

I have the following XAML snippet:

Answer 1

Here I had a spare minute, hope this helps, cheers.

namespaces;

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:ei="clr-namespace:Microsoft.Expression.Interactivity.Core;assembly=Microsoft.Expression.Interactions"

and easy peasy.

Oh, and P.S. - You really only need either TargetName OR TargetObject but I included both for examples sake.