title: How to merge two column in gridview
body: <p>I have a gridview</p>
  
  <pre><code>        &lt;asp:BoundField DataField="UnusedTicketAmount" HeaderText="UnusedTicketAmount" /&gt;
          &lt;asp:BoundField DataField="ddlUnusedAmount" HeaderText="ddlUnusedAmount" /&gt;
          &lt;asp:BoundField DataField="AirlinePenality" HeaderText="AirlinePenality" /&gt;
          &lt;asp:BoundField DataField="ddlAirlinePenality" HeaderText="ddlAirlinePenality" /&gt;
          &lt;asp:BoundField DataField="NetRefundProcess" HeaderText="NetRefundProcess" /&gt;
          &lt;asp:BoundField DataField="ddlNetRefundProcess" HeaderText="ddlNetRefundProcess" /&gt;
          &lt;asp:BoundField DataField="RefundableCommission" HeaderText="RefundableCommission" /&gt;
          &lt;asp:BoundField DataField="ddlRefundableCommission" HeaderText="ddlRefundableCommission" /&gt;
          &lt;asp:BoundField DataField="CouponRefunded" HeaderText="CouponRefunded" /&gt;
          &lt;asp:BoundField DataField="RefundType" HeaderText="RefundType" /&gt; 
  </code></pre>
  
  <p>in this gridview i want to add airlinepenality and ddlairlinepanelity to one column
  how can i do that thanks in advance</p>