title: Microsoft.Office.Interop.Excel.dll not included in Build Folder
body: <p>I write a Console Application with C#, .NET Framework 4.0.</p>
  
  <p>This project reference to <code>Microsoft.Office.Interop.Excel.dll</code>.</p>
  
  <p>When i build project successful, but in build folder not included Microsoft.Office.Interop.Excel.dll.</p>
  
  <p>When i change to .NET 2.0 and build it, <code>Microsoft.Office.Interop.Excel.dll</code> is included!</p>
  
  <p>But i want to build and run my program in .NET 4.0.</p>
  
  <p>I use VS 2010.</p>
  
  <p>Show me how to fix.</p>