Passing state of WPF ValidationRule to View Model in MVVM

Question

I am stuck in a seemingly common requirement. I have a WPF Prism (for MVVM) application. My model implements the IDataErrorInfo for validation. The

Answer 1

I have the same problem with you, but I solve in another way, I use the Triggers to disable the button when the input is invalid. Meanwhile, the textbox binding should use ValidatesOnExceptions=true