Friday, February 10, 2012
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If you add a reference to an assembly, you can choose, if you pick up the assembly undert the tab "Projects" or the tab "Browse". In the first case you get a project reference and VB uses the source code of the given project for intellisense and for the static compiler checks. Since the QueryHelper classes don't exist in the source code, VB can't find it. In the second case you get an assembly reference and VB uses reflection to examine the compiled assembly. Thus VB is able to find the QueryHelper classes. The drawback in the second case is that you can't distiquish between the Debug and Release versions of your assembly. We recommend to compile both the Debug and Release builds into the same directory.
C# treats project references a little bit different. While intellisense is also based on the source code, the C# compiler checks always use reflection. So, if you type a QueryHelper expression, intellisense behaves as if the QueryHelper doesn't exist. But the expression will be compiled without errors.
Best Regards:Mirko