title: Concatenate value of 2 columns in datagridview (winform)
body: <p>I have a datagridview that contains bound and unbound column and i want to combine the value of 2 desired bound column (a and b) so the column c (which is unbound) is contained value from a and b</p>
  
  <p>Is it possible?</p>
  
  <p>Nb : sorry i cant post photos for better explanation</p>
  
  <p>Thanks</p>