CRLF in the XML - Send Pipeline

Question

Hello,
I have a requirement to send a XML message via biztalk to a third party.
In the Send pipeline, i need to do a processing where by a specific node in the xml,
value needs to be replaced with a constant. so i wrote a custom pipeline component that exposes xpath property.
The pipeline will take the xml document and based on the xpath configured, will replace the node's
content with a constant.
This was working all good until we hit an xml that had an empty tag.
<Employee>
  <FirstName>tt</FirstName>
  <LastName>tt</LastName>
  <Salary>100</Salary>
  <PrevRecord/>
</Employee>
The destination system wants us the pass this PrevRecord as empty.
But the pipeline seems to add a CRLF to the PrevREcord node,
so that it appears as <PrevRecord>
                        </PrevRecord>
My pipeline code is as below:
Would anyone be able to assist on this one please?why the code is adding a CRLF to the PrevRecord tag?
        public IBaseMessage Execute(IPipelineContext pContext, IBaseMessage pInMsg)
            if (!Enabled)
                return pInMsg;
               System.IO.Stream memStream = new System.IO.MemoryStream();
                IBaseMessagePart bodyPart = pInMsg.BodyPart;
                if (bodyPart != null)
                    Stream originalStream = bodyPart.GetOriginalDataStream();
                    if (originalStream != null)
                        System.Xml.XmlDocument xdoc = new System.Xml.XmlDocument();
                        xdoc.Load(originalStream);
                        System.Xml.XmlNode Node = xdoc.SelectSingleNode(XpathforInstanceID);
                        if (Node != null)
                            Node.InnerText = "MOCK";
                        xdoc.Save(memStream);
                        memStream.Position=0;
                        bodyPart.Data = memStream;
                        pContext.ResourceTracker.AddResource(memStream);
              return pInMsg;
thanks

Answer 1

In your code use something like this as boatseller suggested:
System.Xml.XmlDocument xdoc = new System.Xml.XmlDocument();
//Add the following line after declaring the XMLDoc object
xdoc.PreserveWhitespace = false;
Having said this, I would not use XMLDocument for your purpose. The amount of space required by an instance of the XmlDocument class to load and create an in-memory representation of a XML document is up to 10 times the actual message size. Use XPathReader
for this purpose and construct the message streaming based.
http://msdn.microsoft.com/en-us/library/ee377071.aspx
You can this article as reference to create a stream based pipeline component using XPathReader for your purpose:
http://blogs.technet.com/b/meamcs/archive/2011/11/17/extracting-biztalk-messages-content-using-xpath-in-custom-pipeline-components.aspx
If this answers your question please mark it accordingly. If this post is helpful, please vote as helpful by clicking the upward arrow mark next to my reply.