Let's say I want to switCh between 2 UserControls programmatically:
- one UserControl contains a TextBox with a label
- the other contains only TextBox
I'd like a single codebehind. Is it possible ? if yes how ? If not how to do the above requirement ?
If I understand you right, you have two usercontrols acting similar and you don't want to write the code-behind double?
Create a ViewModel for the controls. Use for both of the controls the same ViewModel. Look at the MVVM-Pattern.
Another possibility would be to create a CustomControl and make two templates.