Added since RIA/Silverlight projects use this for generated code that doesn't get added into source control.

Keith Elder · defunkt · commit 21cef812294f · 2011-02-21T17:58:01.000-08:00
diff --git a/Global/VisualStudio.gitignore b/Global/VisualStudio.gitignore
@@ -49,4 +49,5 @@ TestResults
 ClientBin
 stylecop.*
 ~$*
-*.dbmdl
+*.dbmdl
+Generated_Code #added for RIA/Silverlight projects
