title: Querying Datatable with where condition
body: <p>I have a datatable with two columns,</p>
  
  <pre><code>Column 1 = "EmpID"
  Column 2 = "EmpName"
  </code></pre>
  
  <p>I want to query the datatable, against the column <code>EmpID</code> and 
  <code>Empname</code>.</p>
  
  <p>For example, I want to get the values where </p>
  
  <pre><code>(EmpName != 'abc' or EmpName != 'xyz') and (EmpID = 5)
  </code></pre>