Question

I would like to define a ControlTemplate at runtime. Is this possible? I have noticed the VisualTree property on the ControlTemplate class. I have also noticed that it uses the FrameworkElementFactory class. However, I cannot seem to get it to work.

Is it possible to create a ControlTemplate at runtime?

Answer 1

Yes, you can do this using FrameworkElementFactory. Charles Petzold has a walkthrough of this in chapter 11 of ‘Applications = Code + Markup,’ but the basic idea is that you create a FrameworkElementFactory for the template root element (and further factories for any child elements), create a ControlTemplate, and set the VisualTree property of the ControlTemplate to the FrameworkElementFactory:

FrameworkElementFactory borderFactory = new FrameworkElementFactory(typeof(Border)); // set properties and create children of borderFactory ControlTemplate template = new ControlTemplate(); template.VisualTree = borderFactory;  myButtonInstance.Template = template;