title: How to add reference Excel in project C#?
body: <p>How to add reference to project that after use:</p>
  
  <pre><code>using ExcelObj = Microsoft.Office.Interop.Excel;
  </code></pre>
  
  <p>I tried to find this in library list everywhere, but have not found.</p>
  
  <p><a href="https://i.stack.imgur.com/ApghU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ApghU.png" alt="enter image description here"></a></p>