title: find exact string in excel sheet in C# program
body: <p>I am using c# program to search a text in my excel sheet. i have excel sheet called "MASTER" and in that sheet, there are a lot of text in column B. I want to look for 
   text "apple" inside column B. here is my code:</p>
  
  <pre><code>Excel.Worksheet workSheet;
  workSheet = (Excel.Worksheet)xlWorkBook.Worksheets["MASTER"];
  string result;
  string utterance = "apples";
  
  range1 = workSheet.Columns["B:B"] as Excel.Range;
  Excel.Range findRange 
  findRange = range1.Find(utterance);
  result = (string) (range2.Cells[findRange1.Row, 2] as Excel.Range).Value2;
  </code></pre>
  
  <p>it can search through the column B for input utterance "apples". however, in that column, there are a lot of apples. "applepie", "applejam","apple", etc. and the result from above code is "applepie". I think it because it just find the text contain "apple". my question is how to make it find the exact string so the output will be "apple" from column B?</p>