Read XML posted to my URL from an external service RSS

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  Laplain

  Member

  299 Points

  81 Posts

  Read XML posted to my URL from an external service

  Feb 23, 2013 12:34 AM|LINK

  I've been doing all kinds of searches today and can't seem to find one clear answer on this.

  Our payment gateway posts xml data to a custom URL we set, and when an event is triggered at their business center website, it sends an xml report to the URL.

  I can't seem to figure out (or get working) reading the http posted data when my URL is triggered.  I can get it to work if I just paste the samle xml data into doc.load("<sample.....>...."), but not if I'm reading the inputstream (or at least I think I am).  I don't have a lot of experience with XML, other than using XML Reader to read through a string, etc.

  Here's what I think it chokes at with an exception of "Data at the root level is invalid. Line 1, position 1.".  I say "think" because I can't debug this since I have to use their Test button on the custom URL at their website, and I don't want to open up my local host where I normally test/debug.

  Dim requestStream As Stream = Request.InputStream <---I THINK IT CHOKES HERE
              Dim xmlDoc As XmlDocument = New XmlDocument
              Dim xmlUpdateNodeList, xmlFollowOnNodeList As XmlNodeList
              Dim xmlNode As XmlNode
              xmlDoc.Load(requestStream)
              ' create XmlNodeReader for document
              Dim reader As XmlNodeReader = New XmlNodeReader(xmlDoc)
              ' display each node's content
              While reader.Read
  
                  Select Case reader.NodeType
  
                      ' if Element, display its name
                      Case XmlNodeType.Element
  
                          xmlString = "<" & reader.Name & ">" & "<br />"
  
                          ' if empty element, decrease depth
                          If reader.IsEmptyElement Then
                              xmlString = "Empty Element" & "<br />"
                          End If
  
                      Case XmlNodeType.Comment ' if Comment, display it
                          xmlString = "<!--" & reader.Value & _
                             "-->" & "<br />"
  
                      Case XmlNodeType.Text ' if Text, display it
                          xmlString = reader.Value & "<br />"
  
                          ' if XML declaration, display it
                      Case XmlNodeType.XmlDeclaration
                          xmlString = "<?" & reader.Name & " " & _
                             reader.Value & "?>" & "<br />"
  
                          ' if EndElement, display it and decrement depth
                      Case XmlNodeType.EndElement
                          xmlString = "</" & reader.Name & ">" & "<br />"
  
  
                  End Select

  
  
  

  Jasee
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  Talal Tayyab

  Participant

  892 Points

  132 Posts

  Re: Read XML posted to my URL from an external service

  Feb 23, 2013 07:26 AM|LINK

  This error is indicative of malformed xml. You can try saving the stream data and examining the xml to see if it is proper.

   

  var stream = new StreamReader(Request.InputStream);
                  var data = stream.ReadToEnd();

  
   

  Please remember to mark as Answer if the post helps you out.
  • Edited by Talal Tayyab on Feb 23, 2013 07:26 AM
  • Marked as answer by Mark - MSFT on Mar 05, 2013 12:09 AM
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  Laplain

  Member

  299 Points

  81 Posts

  Re: Read XML posted to my URL from an external service

  Mar 13, 2013 04:01 AM|LINK

  Sorry I'm just now replying, I didn't get a notification. I will try this in morning. Thank you.
  Jasee
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  Laplain

  Member

  299 Points

  81 Posts

  Re: Read XML posted to my URL from an external service

  Mar 13, 2013 07:14 PM|LINK

  Here's what I get:

  Data at the root level is invalid. Line 1, position 1.

  Any ideas?

  Jasee