title: How to diplay BoundField Columns values sum in Footer Row
body: <p>I am binding a gridview, all columns are boundfields : </p>
  
  <pre><code> &lt;asp:BoundField DataField="PLAN_SEP" ItemStyle-Width="52px" ItemStyle-HorizontalAlign="Center" HeaderText="Plan For The Month" ReadOnly="True" SortExpression="PLAN_SEP" /&gt;
  &lt;asp:BoundField DataField="ACTUAL_SEP" ItemStyle-Width="52px" ItemStyle-HorizontalAlign="Center" HeaderText="Actual For The Month" ReadOnly="True" SortExpression="ACTUAL_SEP" /&gt;
  &lt;asp:BoundField DataField="SCORE_FORMONTH" ItemStyle-Width="80px" ItemStyle-HorizontalAlign="Center" HeaderText="Score" ReadOnly="True" SortExpression="SCORE_FORMONTH" /&gt;
  &lt;asp:BoundField DataField="PLAN_LIVE" ItemStyle-Width="52px" ItemStyle-HorizontalAlign="Center" HeaderText="Plan Upto Month" ReadOnly="True" SortExpression="PLAN_LIVE" /&gt;
  &lt;asp:BoundField DataField="ACTUAL_LIVE" ItemStyle-Width="52px" ItemStyle-HorizontalAlign="Center" HeaderText="Actual Upto Month" ReadOnly="True" SortExpression="ACTUAL_LIVE" /&gt;
  &lt;asp:BoundField DataField="SCORE_UPTOMONTH" ItemStyle-Width="80px" ItemStyle-HorizontalAlign="Center" HeaderText="Score" ReadOnly="True" SortExpression="SCORE_UPTOMONTH" /&gt;
  </code></pre>
  
  <p>Now I need to display a footer row which will show sums of respective column values.
  Total | total 1 | total 2 | ......</p>
  
  <p>How to achieve this ?</p>