paypal namevalue pair aint display

hello dere,..
 
I am using website payment standard buy now button on my website. And i am getting the SUCCESS string on my webpages aftr being redirected from paypal site..Now i have wrote a code to display all name=value pair on my web page (given below)
 
 if (result.StartsWith("SUCCESS"))  //here its goin inside the if loop but not display anything in label1
            {
                Label10.Text = "SUCCESS";
                Label1.Text = "";
                string tempstr = result.Substring(8);
       & ...