无法在VSLangProj中找到VSProject接口

Question

编辑:注意:我正在使用Visual Studio 2015

我正在尝试使用VSIX项目编写一个VisualStudio扩展,它显示当前加载的解决方案的所有引用.

我可以使用下面的代码获取当前的解决方案和项目(所有项目,实际上).

我将问题代码分离为GetProjectReferences方法.
我无法参考VSLangProj.VSProject.

 DTE2 dte2 = Package.GetGlobalService(typeof(DTE)) as     
 var sol = dte2.Solution;
 var projs = sol.Projects;

 foreach (Project project in projs)
 {
     if (project.Kind == ProjectKinds.vsProjectKindSolutionFolder)
     {   
         //Ignoring Solution Folders for now
     }
     else
     {
         //This method tries to get the refernces
         AppendProject(sb,project);
     }               
 }

 private void GetProjectReferences(StringBuilder sb, Project project)
    {            
        var vsProject = project.Object as VSLangProj.VSProject;
        var references = vsProject.References as VSLangProj.References;
        sb.AppendLine(project.Name + ": " + references.Count);
        int counter = 1;
        foreach (var reference in references)
        {
            sb.AppendLine((counter++)+": " + reference.Name + " (" + reference.Path +")");
        }
    }

它与microsoft的文档不匹配,我无法在任何其他Microsoft的库(VSLangProj2和VSLangProj80)中找到此接口,如下所述:https: //msdn.microsoft.com/en-us/library/vslangproj. ASPX

我也试过用VB来测试这里的代码,但无济于事:https: //msdn.microsoft.com/en-us/library/vslangproj.vsproject.aspx

' Macro Editor
' This example retrieves the VSProject object if the first project
' the solution is a Visual Basic or C# project. This routine assumes
' that the solution contains at least one project.
Imports VSLangProj
Sub VSProjectExample()
   Dim aProject As Project
   Dim aVSProject As VSProject

   aProject = DTE.Solution.Projects.Item(1)
   If (aProject.Kind = PrjKind.prjKindVBProject) _
   Or (aProject.Kind = PrjKind.prjKindCSharpProject) Then
      aVSProject = CType(DTE.Solution.Projects.Item(1).Object, VSProject)
      MsgBox(aVSProject.Project.FullName)
   Else
      MsgBox("The first project is not a Visual Basic or C# project.")
   End If
End Sub

Answer 1

感谢@ErikEJ,我能够找到遗漏的东西:我没有VSLangProj参考.它位于Reference Manager的Extensions选项卡中