Keep in mind that this is a guess, but I would say that the easiest way to do this might be applying a
RotateTransform
to the
Image
's
RenderTransform
property.
RenderTransform
is a
DependencyProperty
so you should be able to bind it to the
Value
property of the
NumericUpDown
. Yet, you are going to need an
IValueConverter
that transforms the value from the
NumericUpDown
into a
RotateTransform
. The code for the
IValueConverter
will look something like this:
public class RotationsTransformConverter
: IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
double angle;
try
{
angle = (double) value;
}
catch
{
angle = 0.0;
}
RotateTransform transformation = new RotateTransform(angle);
return transformation;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
Once you have your converter, you are going to have to instantiate it somewhere. I would advise setting it as a resource.
<local:RotationsTransformConverter x:key="MyConverter"/>
Once the converter is up and ready to go, you create a binding from the
Image
's
RenderTransform
property to the
NumericUpDown
's
Value
property. In the
Binding
's
Converter
property, you will reference the converter as a
StaticResource
. That binding will look something like this:
<Image RenderTransform="{Binding Path=, Mode=OneWay, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource MyConverter}}/>
If you look closely at the binding, you will notice that I left the path blank. I don't know what the path from the
Image
to the
NumericUpDown
is, so I'm going to let you fill that part out.