title: Multiple date diff//C#
body: <p>How to calculate a multiple date difference like </p>
  
  <pre><code>startDate1=("dd-MM-yy") 20-08-2011 
  endDate1=25-08-11 
  </code></pre>
  
  <p>another </p>
  
  <pre><code>startdate2=27-08-2011 
  endDate2=30-08-2011 
  </code></pre>
  
  <p>such that output will be</p>
  
  <pre><code>(endDate1-startDate1)+(endDate2-StartDate2) == 8days //only in terms of days
  </code></pre>