DropDownList in item template row comparison with in a GridView
<p>I have a <code>Dropdownlist</code> with in a <code>gridview</code>, in my grid I have 10 records, my dropdown values are 1,2,3...10. In first record drop down value is 1, second record dropdown value is 2....</p>

<ol>
<li><p>now I changed the 5 drop down value to 2, then second drop value is changed to 3 and 3 dropdown has been changed to 4, 4th dropdown has been changed to 5</p></li>
<li><p>I changed the 5th drop down value to 8, then 8th dropdown value is changed to 7, 7th dropdown has been changed to 6, 6th dropdown has been changed to 5</p></li>
</ol>

<p>this is my task plz help me to do t</p>
