Suspend Databinding of Controls

Question

I have a series of controls that are databound to values that change every second or so. From time to time, I need to \"pause\" the controls, so that they do not update their d

Answer 1

My solution ended up as follows to prevent the text updating while the user is trying to change it.

XAML:

Code behind:

    private void TextBox_OnGotFocus([CanBeNull] object sender, [CanBeNull] RoutedEventArgs e)
    {
        TextBox tb = sender as TextBox;
        if (tb == null) return;
        BindingExpression expression = tb.GetBindingExpression(TextBox.TextProperty);
        if (expression == null) return;
        // disable updates from source
        BindingOperations.ClearBinding(tb, TextBlock.TextProperty);
        tb.SetBinding(TextBox.TextProperty, new Binding(expression.ParentBinding.Path.Path) { Mode = BindingMode.OneWayToSource, UpdateSourceTrigger = UpdateSourceTrigger.Explicit , FallbackValue = tb.Text});
    }

    private void TextBox_OnLostFocus([CanBeNull] object sender, [CanBeNull] RoutedEventArgs e)
    {
        TextBox tb = sender as TextBox;
        if (tb == null) return;
        BindingExpression expression = tb.GetBindingExpression(TextBox.TextProperty);
        if (expression == null) return;
        // send current value to source
        expression.UpdateSource();
        // enable updates from source
        BindingOperations.ClearBinding(tb, TextBlock.TextProperty);
        tb.SetBinding(TextBox.TextProperty, new Binding(expression.ParentBinding.Path.Path) { Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.LostFocus });
    }

Note that I assign the current Text as the fallback value of the OneWayToSource binding to have a start value (otherwise the text field would be empty once focused)