title: How do I clear particular range of cells in VSTO excel using C#
body: <p>I have 2 questions.</p>
  
  <ol>
  <li><p>I want to clear  a range of cells in Excel VSTO apps.</p></li>
  <li><p>When the user opens the Excel for the first time, I want to populate a particular cell with the user's name and address. After that I want it to be saved in the excel and it should not be populated if the user opens again. How do I accomplish this task</p></li>
  </ol>