Converting Silverlight 3 to Silverlight 4

In this video, I wanted to share just how quick and easy it is to convert a Silverlight 3 project to Silverlight 4.

The steps are basically as follows:

• Make sure you have the Silverlight 4 tools
• If you use Blend or any of the interactivity extensions (for triggers and behaviors) be sure to get the latest version of Blend
• If you use the Toolkit, download and install the latest version of that as well
• Open your project in Visual Studio 2010, then
  1. Right-click the Silverlight projects, go into properties and change to target Silverlight 4
  2. Delete any bad Toolkit or Blend references and re-add them to point to the current version
  3. If you used the MEF preview, the references should update automatically — delete any local copies of the DLLs you may have included in the project
  4. Compile and run: in most cases, you’re done!

In this simple example, I not only converted the application, but took advantage of the fact that buttons support commanding and removed a trigger I created in order to bind the button directly. Enjoy!

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