title: Getting count of all repeated rows in a datatable in C#
body: <p>I am filling a dataset by running a stored procedure, and i am filling a datatable from the dataset.</p>
  
  <pre><code>DataSet RawDataSet = DataAccessHelper.RunProcedure("storedprocedureName");
  //this will just return the dataset by running the procedure
  DataTable RankTable = RawDataSet.Tables[0];
  </code></pre>
  
  <p>The Datatable has the below values:</p>
  
  <pre><code>Vicky   Login   6/24/2014
  Vicky   Login   6/25/2014
  Arun    Game    6/26/2014
  Arun    Login   6/27/2014
  Kumar   Login   6/28/2014
  Kumar   Game    6/29/2014
  Arun    Login   6/30/2014
  Arun    Login   7/1/2014
  Kumar   Game    7/2/2014
  Vicky   Login   7/3/2014
  Arun    Login   7/4/2014
  Arun    Game    7/5/2014
  </code></pre>
  
  <p>I want to parse this dataTable and get how many times everyone has done an action, i.e how many times each row is repeated:</p>
  
  <pre><code>Vicky   Login  3
  Arun    Game   2
  Arun    Login  4
  Kumar   Login  1
  Kumar   Game   2
  </code></pre>
  
  <p>I am new to C#. This can be done using count(*) in SQL but I need to do this using C#.
  Please let me know if there are any ways to achieve this.</p>
  
  <p>I have searched SO but all posts are related to removing the duplicates/finding the duplicates, which does not solve my purpose.</p>