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| Using http handler to return an xml document server side |
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Wed, 20 Feb 2008 16:49:45 +000 |
Hi I using .net 2 I am trying to to send a request to another domain to recieve
an xml document. When I recieve this xml document i will use it to populate
controls on the page before i send the page to the client. My question is what
is the best way to do this.
I do not want to use the client for this as the are all sorts of incompatbility
issues depending on browser. Instead I would like to do this at the server and
then post back the results to the client.
i.e. If i type a url into the browser window directly i get returned back to me
an xml document. for example (PLEASE DO NOT CLICK THIS LINK AS IT DOES NOT WORK
IT IS AN EXAMPLE ONLY)
http://xxx.co.uk/somefolder/somepage?id=MG02
This returns an xml doc like so and displays it in the browser<?xml
version="1.0" encoding="UTF-8"
?>-<DATASET>-<DVLA>-<VEHICLE> <VRM>XXXX</VRM>
<VIN>XXXYYYXXX</VIN> <MAKE_CODE>MH</MAKE_CODE>
<MODEL_CODE>400</MODEL_CODE> <CC>1995</CC>
<COLOUR>J</COLOUR>
<LAST_COLOUR_DATE>01-JAN-0001</LAST_COLOUR_DATE>
<PREV_COLOURS>0</PREV_COLOURS> </VEHICLE>-<MAKE>
<CODE>MH1</CODE> <DESC>BMW</DESC>
</MAKE>-<MODEL> <CODE>MH2400</CODE> <DESC>320I M
SPORT</DESC> </MODEL>-<BODY> <CODE>05</CODE>
<DESC>COUPE</DESC> </BODY>-<COLOUR>
<CODE>J</CODE> <DESC>BLUE</DESC> </COLOUR>
</DVLA> <PITO/> </DATASET> I would like to send an http
request from the server in the aspx page that loads this xml feed into an xml
object so I can interrogate the returned fields and populate edit box controls
on the form before I post the form back to the client.Then when the client loads
the page the fields will then automatically be populated for him/her. Any Help
in the matter will be greatly appreciated. Mick!Forever onwards is the call!
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| Re: Using http handler to return an xml document server side |
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Fri, 22 Feb 2008 05:57:32 +000 |
Hi,
From your description, you just want to make a request to your file and retrieve
the xml return, right?
If so, you can use HttpWebRequest class to make a request to your target file,
and retrieve your XML return. See the following sample:
byte[] buf = new byte[38192];
HttpWebRequest request =
(HttpWebRequest)WebRequest.Create(“TargetUrl”);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream resStream = response.GetResponseStream();
int count = resStream.Read(buf, 0, buf.Length);
string intervalue = Encoding.Default.GetString(buf, 0, count);
resStream.Close();
After that you can use XMLDocument object to handle with your XML return.
Read the attribute in a specific node.
XmlDocument doc=new XmlDocument();
doc.LoadXML(TheXMLStringReturnedFromWebRequest);
XmlNode xnuser=doc.SelectSingleNode("userdata");
string flag=xnuser.Attributes["createuser"].InnerText;
Read value in a specific node.
XmlDocument doc=new XmlDocument();
doc.LoadXML(TheXMLStringReturnedFromWebRequest);
XmlNode xnserver =
doc.SelectSingleNode("userdata/dataconnection/server");
Hope that helps. Thanks.
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