WPF with MVVM, RelayCommand vs DelegateCommand

Hi,
which is better to use: RelayCommand or DelegateCommand?
And why is it better?
quentinAAsked:
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SriVaddadiCommented:
RelayCommand allows you to inject the command's logic via delegates passed into its constructor. This approach allows for terse, concise command implementation in ViewModel classes. RelayCommand is a simplified variation of the DelegateCommand found in the Microsoft Composite Application Library.

The DelegateCommand allows delegating the commanding logic instead of requiring a handler in the code behind. It uses a delegate as the method of invoking a target handling method.
The DelegateCommand uses its delegate to invoke a CanExecute method or Execute method on the target object when the command is invoked. Because the class is generic, it enforces compile-time checking on the command parameters, which traditional WPF commands do not. Additionally, because it accepts delegates, it removes the need for creating a new command type for every instance where you need commanding.
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quentinAAuthor Commented:
Thanks for this info. Does the RelayCommand, being simpler, have any drawbacks that the more complicated DelegateCommand solves? Which would you use?
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quentinAAuthor Commented:
Would be useful to know which people prefer to use
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SriVaddadiCommented:
It depends on what you are tying to do ? If you just want to implement MVVM then you could go with MVVM light and If you looking for developing composite applications you use Prism.
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