Creating a custom BizTalk 2010 pipeline component–Part 3

I hadn’t intended for there to actually be a part 3 to this series, but I realized that I failed to talk about how to get the xml back into the message once you’re done messing with it. You have to convert it to a MemoryStream and assign it to IBaseMessage.BodyPart.Data, like this:

public Microsoft.BizTalk.Message.Interop.IBaseMessage Execute(Microsoft.BizTalk.Component.Interop.IPipelineContext pc, Microsoft.BizTalk.Message.Interop.IBaseMessage inmsg) {     IBaseMessagePart bodyPart = inmsg.BodyPart;     Stream originalStream = bodyPart.GetOriginalDataStream;     if (originalStream!= null)     {         XmlDocument myXml = new XmlDocument;         myXml.Load(originalStream);

        myXml = DoWork(myXml); //Whatever you actually want to do to the xml

        byte[] outBytes = System.Text.Encoding.ASCII.GetBytes(myXml.OuterXml);         MemoryStream memStream = new MemoryStream;         memStream.Write(outBytes, 0, outBytes.Length);         memStream.Position = 0;         bodyPart.Data = memStream;         pc.ResourceTracker.AddResource(memStream);     }

    return inmsg; }

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