title: How to use COM in C#
body: <p>How to reference VB 6.0 component(.dll) with C# in Visual Studio .NET 2005</p>
  
  <p>After I referenced this DLL file, I can see the new icon in the reference folder icon in solution explorer. But this new icon has "!" sybbol. I double clicked this new icon that said "This project cannot be viewed in the object browser because it is unavailable or not yet built. Please ensure that the projects is available and built."</p>