title: Inner join of DataTables in C#
body: <p>Let T1 and T2 are <code>DataTable</code>s with following fields</p>
  
  <pre><code>T1(CustID, ColX, ColY)
  
  T2(CustID, ColZ)
  </code></pre>
  
  <p>I need the joint table</p>
  
  <pre><code>TJ (CustID, ColX, ColY, ColZ)
  </code></pre>
  
  <p>How this can be done in C# code in a simple way? Thanks.</p>