title: How to concatenate multiple column values into one column in datatable c#
body: <p>I have a datatable with 3 columns( col1,col2,col3)
  I have added an extra column with col4(Lets say).</p>
  
  <p>Now My requirement is :</p>
  
  <pre><code>Col1 ||    col2 ||  col3  ||  col4
  
  A          B        C         Col1-A;Col2-B;Col3-C 
  </code></pre>
  
  <p>Basically, I want a concatenated values in the new column of the existing column name and values as demonstrated above. 
  Hope my requirement is understood.
  Thanks in Advance!</p>