title: How to make part of a string Bold and add it to a excel Cell?
body: <p>Hello i try to make a part of a string bold and then add it to an excel Cell. So it looks like:</p>
  
  <p><a href="https://i.stack.imgur.com/sZ1Vd.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sZ1Vd.jpg" alt="Excel Cell"></a></p>
  
  <p>What i tried:</p>
  
  <p>Inside Excel using a range: </p>
  
  <pre><code>excelSheet.get_Range("A" + 16, "D" + 16).Font.Bold = true;
  </code></pre>
  
  <p>But this makes everything bold....</p>
  
  <p>Then i tried:</p>
  
  <pre><code>"&lt;b&gt;" + text + "&lt;b&gt;"
  </code></pre>
  
  <p>and had no success.</p>
  
  <p>So i make something wrong. Any help or advise would be great and thanks for your time.</p>
  
  <p><strong>EDIT:</strong> Working C# Code:</p>
  
  <pre><code>Excel.Range range1 = excelSheet.Range["A36"];
  Excel.Characters test = range1.get_Characters(21, 4);
  test.Font.Bold = true;
  </code></pre>