Reg Query string

hey guys ,

Just help me out with this.

I have asp.net application with c# as code behind. I have a drop down that

displays a list of selected values. The drop down is bound to a data source control and when i choose a value it displays and click on the button , it displays reports. The url of the page looks something like this.

http://localhost:port/default.aspx

what i want is it should display the same data as the result but when i click the button it shud display the the selected value in the query string and yet show the same result.

The url shud look something like this

http://localhots:port/default.aspx? id = selected value in the drop down

Is the form set to POST as opposed to GET?

In the Page Load event, do a postback check and if the page is being posted back, do not re-bind the dropdownlist. You can then access the selected item in the dropdownlist and populate the rest of your page with that value, or redirect to default.aspx?id=...