title: Linq query to count field in datatable
body: <p>I have a datatable that contains a column as "Column-A". Now if that column contains a value of "Y" or "N", i need to set the count variable.</p>
  
  <p>for that i need to check that if count is greater that 0 or not. How the same can be achieved with the help of LINQ?</p>
  
  <p>Please guide!</p>