How to directy use RenderTransform property of TextBlock

Question

I understand I can rotate text like this:

<TextBlock Text="4:00">
    <TextBlock.RenderTransform>
        <RotateTransform Angle="-90"/>
    </TextBlock.RenderTransform>
</TextBlock>

But how can I use the RenderTransform property of TextBlock directly like:

<TextBlock Text="4:00" RenderTransform="<How does this work?>"/>

to avoid the inner code? Maybe a general tutorial for how this works would be good as well.

Answer 1

RenderTransform property is of type Transform which can mean many possible transform types. So you can`t assign it to some type that has some properties using just a string by default. If you want to to conserve space though, you can define your RotateTransform in resources, and give it some key:

<Window.Resources>
    <RotateTransform x:Key="myRotateTransform" Angle="-90" />
</Window.Resources>

Then just use it like that:

<TextBlock Text="4:00" RenderTransform="{StaticResource myRotateTransform}" />

This will work even better if you need to apply same transform to several controls too, because you can edit it in just one place.