title: How do I get the differences between two string arrays in C#?
body: <p>How to compare two array string using C#.net?
  Eg:</p>
  
  <pre><code>string[] com1 = { "COM6", "COM7" };
  string[] com2 = { "COM6", "COM7","COM8" };
  </code></pre>
  
  <p>Here com1 and com2 are Array string.
  Result:
  COM8.
  How to achieve this? </p>