title: How to validate Excel range that it has error/warning using .NET?
body: <p>I want to validate range of excel worksheet (e.g. "A10:B20") to check that is it has error or NA value or not? How to do that in C#?</p>
  
  <p>P.S. I find similar topic (<a href="https://stackoverflow.com/questions/2383370/excel-range-usage-question-cell-error-checking">Excel range usage question (cell error checking)</a>) but that topic is not thing I need.</p>