What is the Difference between the [RoutedCommand][1] and [RelayCommand][2] ?
 When to use RoutedCommand and when to use RelayCommand in MVVM pattern ?


  [1]: http://msdn.microsoft.com/en-us/library/system.windows.input.routedcommand.aspx
  [2]: http://msdn.microsoft.com/en-us/magazine/dd419663.aspx#id0090051

MVVM Routed and Relay Command

I&#39;ve been programming a lot in WPF lately but my View and ViewModel are not separate at this point. Well, it&#39;s partially. All my bindings concerned to text in text boxes, content for labels, lists in datagrids, ... are done by regular properties with a NotifyPropertyChanged event in them.

All my events for handling button clicks or text changed stuff is done by linking the events. Now, I wanted to start working with commands and found this article: http://www.codeproject.com/Articles/126249/MVVM-Pattern-in-WPF-A-Simple-Tutorial-for-Absolute. It has an explanation of how to set up MVVM but I&#39;m confused with the `RelayCommand`.

What job does it do?
Is it useable for all commands in my form?
How do I make the button disable when (a) certain text box(es) are not filled in?

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EDIT 1:

A good explanation to &quot;Is it useable for all commands in my form?&quot; is answered here: https://stackoverflow.com/a/22286816/3357699

Here is the code I have so far: https://stackoverflow.com/a/22289358/3357699

All Relaycommand Solutions on Gang of Coders

Total of 2 Relaycommand Solutions

MVVM Routed and Relay Command

Why RelayCommand