Change binding value, not binding itself

Question

I've got a WPF UserControl containing a DependencyProperty (MyProperty).

The DependencyProperty is bound to a Property in the DataContext.

Now in the UserControl I want to change the value of the bound property. But if I assign MyProperty = NewValue the Binding is lost and replaced by NewValue.

What I want to achieve is change the DataContext-property the DependencyProperty is bound to.

How do I achieve this instead of changing the binding?

To clarify: using something like MyTextBox.Text = "0"; I'll release the binding. How would I set Text, leave the binding intact so the property Text is bound to will change, too.

Answer 1

You can use SetCurrentValue.

The SetCurrentValue method changes the effective value of the property, but existing triggers, data bindings, and styles will continue to work.