title: Change the column header caption in a WinForm DataGridView
body: <p>How to change the row name with option button?</p>
  
  <p>If option button export selected:</p>
  
  <pre><code>Private sub optexport_click()
      txtimport = "I"
      fgcargo.textmatrix(0,2) = "bl number"
      fgcargo.textmatrix(0,4) = "date"
   end sub
  </code></pre>
  
  <p>If option button import selected:</p>
  
  <pre><code>Private sub optimport_click()
      txtimport = "E"
      fgcargo.textmatrix(0,2) = "so number"
      fgcargo.textmatrix(0,4) = "date"
   end sub
  </code></pre>