title: Epplus OpenXml unable to find index in range
body: <p>Need to find the index of each in r (range). Please help</p>
  
  <p>Code:</p>
  
  <pre><code>r = "C1:G10"
  //Interop : 
  ws.Range[ws.Cells[r[1, 1].Row, r[1, 1].Column], ws.Cells[r[1, 1].Row, r[1, r.Columns.Count].Column]]
  </code></pre>
  
  <p>How to get the index <strong>r[1,1]</strong> in Epplus like used above in interop.</p>