Multiple Selection in Dropdown and update query string
<p>I generate a report according to selection of company and their customer. I use one dropdown for company and according to company the customer is displayed. However, I want to make it possible to select multiple customers, and when the user clicks on the button to the view report, I want to update the query string with that selection.  If the selection of customer is three, I want to pass their customer code using query string. In sort querystring is send according to the selection of customer.</p>

<p>Please help me.</p>

<p>Thanks and regards.</p>

<p>Mitesh</p>
