title: Merge gridview header or merge sub headers of grid view
body: <p>I know there is possibility to merge gridview columns but my requirement is some thing different from that I would like to have my gridview as follows</p>
  <p><img src="https://i.stack.imgur.com/5s125.jpg" alt="enter image description here" /></p>
  <p>Is it possible to do and also I would like to bind the string values which i will get in a string array.. I would like to create the grid view dynamically and bind the data as per the strings I have is it possible to do.</p>