It works in my computer (Starting problems – Jounce)

I was out on a vaccation and happy to be back. I will post couple of pictures later.

Now to the fun part, Couple of my friends have a problem developing ‘Hello World’ program using Jounce. Now that Jounce 1.0 is out, it is no longer required to download the source code to build and generate the dll to use. You can now download the single Jounce.dll directly from download page or using NuGet get the Jounce Package. So my friends tried the first approach by using the single Jounce.dll. The program compiles just fine but when you run the program, it fails at runtime. But I could create ‘Hello World’ program all day and it does not fail at run time. By the way, I followed the same steps by friends did. As all the programmers say, ‘It works on my PC’ 🙂

I always like good debugging. So I sat with one of my friend and see what is happening. For starters, when you create Jounce application, you end up deleting all the code from App.XAML.cs since application startup will be taken over by Jounce Framework. Since there are no code in App.XAML.cs, the trapping error was little difficult. So I went in and put the code the catch the unhandled exception in App.XAML.cs. With that armed, put a break point inside the unhandled exception code, when I looked at the error log, I could see, it is looking for ‘System.Windows.Interactivity.dll’ and that was not in the reference folder. We added the missing dll and there it is, ‘Hello World’.

Now the question, how come it worked in my box not on my friends, we both did the same things. The only difference was, I have Expression Blend installed and this dll is available in GAC to find it. So the bottom line, is if you are using Jounce and do not have Expression Blend installed, make sure you have this dll in your reference other wise you will run into the same problem. You will need this dll if you are going to use MVVMLite or Caliburn.Micro as well.

There is still an outstanding issue with NuGet, with out Expression Blend install, Nuget install for Jounce is failing. I haven’t got ten around to see why is it failing. I will update this post once I get an answer.

** Update – “I looks like maybe one of the Expression SDK because of the Navigation Trigger. Will see if I can add the dep to pkg” from our good friend Jeremy. **

Hope this helps someone.

Expression Blend Tutorial link

Lately I have been working on design time data and unit testing with respect to MVVM frameworks. Most of the design time data work I have done is in the XAML with interfaces. That brings up another question, does these frameworks ‘blendable’? Unfortunatly I never did any work on Expression Blend, so I switched my focus to Expression Blend for the last two days with design time data in mind. This morning I came across the following link and it is worth sharing and useful any expression blend newbies like me. http://visitmix.com/labs/rosetta/EyesOfBlend/DataTemplates/ If you all have any MUST read for expression blend newbies, please send it to me.