Relay Command CanExecute() not working using MVVMLight Toolkit in WPF

WPF Application developers would be experiencing or would have observed that after updating MVVMLight Toolkit package to Version 5.0.0 or 5.0.1, RelayCommand - CanExecute() mechanism is not working anymore. This issue is been already reported by MVVMLight user on codeplex as Issue# 7659. As explained by Laurent: WPF is the only XAML framework that uses the CommandManager to automagically raise the CanExecuteChanged event on ICommands. Unfortunately, there is no CommandManager in PCL (po » Read more