private void LineScaping_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
var binding = new Binding();
binding.Source = (sender as Slider).Value + Content_Box.FontSize;
Content_Box.SetBinding(TextBlock.LineHeightProperty, binding);
}
private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
var new_size = (sender as Slider).Value;
var old_spacing = (double)Content_Box.GetValue(TextBlock.LineHeightProperty) - Content_Box.FontSize;
var binding = new Binding()
{
Source = old_spacing + new_size
};
Content_Box.SetBinding(TextBlock.LineHeightProperty, binding);
Content_Box.FontSize = new_size;
}