title: find the number of days between dates C#
body: <p>I have a string that coming in date format date=08/21/2016 what I want to do is find the numbers of days From today's date in C# I have converted the string like this.</p>
  
  <pre><code> DateTime Date = Convert.ToDayTime("08/21/2016"); 
   DateTime TodayDate = DateTime.Today.Day;    
   DateTime SubDate = Date.Subtract(TodayDate);
  </code></pre>
  
  <p>On the third line, I'm getting error cannot convert 
       System.TimeSpan to System.DateTime</p>
  
  <p>Is there an another way to do this what I want to do I just calculate numbers of days from a future date that is coming as a string </p>
  
  <pre><code> Example 
   TodayDate=08/01/2016
   FutureDate=08/20/2016
  
   Answer 19 days 
  </code></pre>
  
  <p>I'm new to C# if it's not to much trouble could somebody share code solution how to achieve this?
  Thanks for the help</p>