I have just finished reading up the first three chapters of the In The Box MVVM Training. The training series use a very innovative delivery approach. All the material, code and solution reference are integrated into Visual Studio. In that way there is very little time wasted in flipping through code, samples, or try running applications as it is all “In the box”. Really good stuff.
Initially the MVVM pattern could be a little difficult to grasp especially for a very green developer like me. However, I have my “eureka” moment which is really interesting as I could find a very bizarre analogy which I really understand.
As a guy grow up in Hong Kong watching Hong Kong ganster movies, I have some understand about how drug dealers operate. They have people who is responsible for receiving drugs from high power speed boat (big fly in Chines). People who move the incoming stock into the workshop for further processing and packing, and then people for distribution.
All these different people needs to communicate with each other, but never met and know each other. They will use prepaid SIM (space card in chinese), pager, untraceable IM accounts etc to communicate with each other, they will never meet each other or have any knowledge of the people before and after the supply chain. This reduce the risk of being traced by police and undercovers (two five boy in Chinese).
WPF with MVVM is exactly this. Each layer don’t know each other. They operate by using loosely coupled communication channel. All they know is the protocol but not the name. If one of them disappear, it can still work (highly testable!)
OK, just to share an interesting view on this subject. Got to get back reading during the weekend, cheers!
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