title: Difference between Worksheets and Sheets in Excel interop
body: <p>In excel COM interop (C#), what is the difference between:</p>
  
  <pre><code>_sheet = (Excel._Worksheet)_wb.Worksheets["SheetName"];
  </code></pre>
  
  <p>and</p>
  
  <pre><code>_sheet = (Excel._Worksheet)_wb.Sheets["SheetName"];
  </code></pre>
  
  <p>?</p>