MVVM Session 01 – Introduction to Model-View-ViewModel Pattern for WPF

10 Comments

1. Lindsey Eastburn October 30, 2014 at 11:56 am

   Hi David. Enjoyed your very clear introductory WPF MVVM demo. Just a little confused as I’m looking at other demos on line and see that INotifyProperyChanged is sometimes implemented in the ViewModel rather than in the Model, as with your example. Is this choice important? Why did you show it on the Model? Thanks.

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   1. David Anderson (Post author)January 10, 2015 at 1:27 am

      Depends on your scenario. Often you might have it implemented on both, though I tend to wrap my models in my view-model and not expose them, so most of the time only my view-model implements change notification.

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2. shrikant March 17, 2013 at 12:48 am

   Its great video to understand MVVM. Thanks a lot for uploading source code

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3. Pradeep February 18, 2013 at 12:51 am

   Hi David,
   I am new to WPF and MVVM. We are creating some user controls that change their state depending on values it receive from some servers/databases.
   For instance, we need to draw an Elipse and the color of this Elipse should change depnending on some properties received from Server. Can we handle these situations using MVVM pattern?
   Also the colors are read from the String resources.
   Please post me a sample that can help me.

   Thanks,
   Pradeep

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   1. David Anderson (Post author)February 24, 2013 at 6:05 pm

      You can do this using an IValueConverter implementation. They are pretty easy to use and Msdn has a decent example. Basically you implement one, define it as a resource in Xaml, and specify it as a parameter in your Xaml binding. ie. {Binding PropName, Converter=’MyConverter’}

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4. Zack August 22, 2012 at 10:29 pm

   Still awaiting “Session 02”! 😛

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5. Duncan August 14, 2012 at 1:19 am

   Hi, I have just watched your video on MVVM, which was just what I was looking for, do you have a download with this video?

   Many thanks

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   1. David Anderson (Post author)August 14, 2012 at 9:40 am

      Hey Duncan,
      I uploaded the source code and added the appropriate link to the article.

      Thanks,
      David A.

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      1. Duncan August 14, 2012 at 1:01 pm

         David,

         Thanks will download, many thanks

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      2. Rahman December 30, 2012 at 12:50 pm

         Please send me the Link from where I can download the Session 2 sample code.

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