How to assign a dynamic resource style in code?

I want to produce in code the equivalent of this in XAML: ``` <TextBlock Text="Title:" Width="{Binding FormLabelColumnWidth}" Style="{DynamicResource FormLabelStyle}"/> ``` I can do the text and the width, but how do I assign the dynamic resource to the style: ``` TextBlock tb = new TextBlock(); tb.Text = "Title:"; tb.Width = FormLabelColumnWidth; tb.Style = ??? ```