How to reset the value of the dropdownlist after choosing a value for filtering the GridView?
<p>I used this <a href="http://csharpdotnetfreak.blogspot.com/2011/04/gridview-filterexpression-dropdownlist.html" rel="nofollow">example</a>
to create a GridView with DropDownList for filtering the content of the GridView. </p>

<p>Everything works well but when I refresh the page the dropdownlist keeps the same value that I chose before refreshing the page. I don't know why. Could anyone help me and tell me why this is happened?</p>
