title: How to Convert string to Long integer in MVC 4
body: <p>I can't use "<code>Int64.Parse(), Convert.ToInt64 and long.parse</code>" to convert string to long. when I debug, I get error <code>Input string was not in a correct format.</code>
  What must I do. I can't solve the problem, when I try to solve, I don't have idea.
  You can help me???
  please, I hope you can help my problem.</p>