c# xml error: Object reference not set to an instance of an object.

Posted by every_answer_gets_a_point on Stack Overflow See other posts from Stack Overflow or by every_answer_gets_a_point
Published on 2010-04-14T19:30:50Z Indexed on 2010/04/14 19:33 UTC
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here's my code:

foreach (string c in colorList)
         {
             doc.Load(@"http://whoisxmlapi.com/whoisserver/WhoisService?domainName=" + c + @"&username=user&password=pass");
             textBox1.Text += doc.SelectSingleNode("WhoisRecord/registrant/email").InnerText + ",";

         }

for the second line of code (textbox1...) is generating this error what am i doing wrong?

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