Source control for multiple projects

I've worked with SourceGear Vault for sometime for source control but I've run into a problem - which is going to be all the more common.

I have a visual studio solutions that looks like so:

-Main solution
      - Web App Project
      - Shared Class Library 1
      - Shared Class Library 2

The problem is that I ca开发者_Go百科n only bind the solution to one repository, however the class libraries are shared, they need to be used by multiple solutions.

Is there a source control solution that anyone knows of that will allow for a solution to contain multiple projects, all bound to different repositories?

Thanks in advance Al

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Build the shared libraries separately and reference the assemblies. The building of the libraries can be automated (e.g. using Continuous Integration), so that this is an easy and efficient solution.

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A solution may be using SubVersion and the svn-externals.

You can integrate it in Visual Studio via VisualSVN plugin (you must purchase it). If you want purchase it, you can use TortoiseSVN