如何确定VSLangProj.Reference是项目引用还是文件引用？

Question

我正在使用Visual Studio插件。给定一个VSLangProj.Reference，有没有办法以编程方式确定该引用是项目引用还是文件引用？

Answer 1

VS 2008 the Reference Type has a property called SourceProject

中的

如果引用是项目，则获取Project对象。否则，它返回Nothing（空引用）。只读。

Answer 2

这是我到目前为止所得到的：

if (reference.Type == prjReferenceType.prjReferenceTypeActiveX)
{
    // reference is a COM object
}
else if (reference.SourceProject != null)
{
    // reference is a project in the solution
}
else if (!string.IsNullOrEmpty(reference.Path))
{
    // "reference" is either
    // an valid external dll
    // or a project that is not in the solution and is referenced by a C++ project
}
else
{
    // reference is either
    // a project not in the solution
    // or an external dll with invalid path
}