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C# Call Web Service and Get String Result

/ Published in: C#
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Basic example of calling a web service from code using GET. You can pass parameters in as query vars.

Assumes return type of service is "String". Example return xml:


US

@SNIPPLR TEAM: Please let me put xml attributes in code sections in comments!

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  1. public string getServiceResult(string serviceUrl) {
  2. 	HttpWebRequest HttpWReq;
  3. 	HttpWebResponse HttpWResp;
  4. 	HttpWReq = (HttpWebRequest)WebRequest.Create(serviceUrl);
  5. 	HttpWReq.Method = "GET";
  6. 	HttpWResp = (HttpWebResponse)HttpWReq.GetResponse();
  7. 	if (HttpWResp.StatusCode == HttpStatusCode.OK)
  8. 	{
  9. 		//Consume webservice with basic XML reading, assumes it returns (one) string
  10. 		XmlReader reader = XmlReader.Create(HttpWResp.GetResponseStream());
  11. 		while (reader.Read())
  12. 		{
  13. 			reader.MoveToFirstAttribute();
  14. 			if (reader.NodeType == XmlNodeType.Text)
  15. 			{
  16. 				return reader.Value;
  17. 			}
  18. 		}
  19. 		return String.Empty;
  20. 	}
  21. 	else
  22. 	{
  23. 		throw new Exception("Error on remote IP to Country service: "+ HttpWResp.StatusCode.ToString());
  24. 	}
  25. }

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