How to deserialize email notifications into objects with .NET

I receive notifications via email and need to deserialize it into objects. How can I do this with .NET?

I receive notifications via email and need to deserialize it into objects.  How can I do this with .NET?

The content of the email notification is equivalent to the response that you would get when you make a corresponding SOAP request.  For instance, if you get a notification for FixedPriceTransaction, the payload is similar to GetItemTransactions with the detail level ReturnAll.  You can get a list of notification payloads from the documentation. 

The easiest way to deserialize the payload into an object is to apply an xsl transformation to extract the child from the soapenv:Body element and deserialize it to an appropriate object.  Lets take the example of the FixedPriceTransaction notification.

Here is a sample .NET code to deserialize it into a GetItemTransactionsResponseType object:

using System;
using eBay.Service.Call;
using eBay.Service.Core.Sdk;
using eBay.Service.Util;
using eBay.Service.Core.Soap;
using System.IO;
using System.Xml;
using System.Xml.Serialization;
using System.Xml.Xsl;

namespace SDK3Sample
{
  private void Deserialize(string infile, string outfile, string xslfile)
  {
   //infile:  file containing the notification payload
   //outfile:  this will contain the xml after the transformation is applied
   //xslfile:  the file containing the xsl for transformation
    XmlSerializer oDeSerializer = new XmlSerializer(typeof(GetItemTransactionsResponseType));
    XmlUrlResolver resolver = new XmlUrlResolver();

    //Load and transform the xml
    XslTransform xslTransform = new XslTransform();
    xslTransform.Load(xslfile);
    xslTransform.Transform(infile, outfile, resolver);
   
    //Read the transformed xml
    FileStream oFileStream = new FileStream(outfile, FileMode.Open);
   
    // Declare an object variable of the type to be deserialized.
    GetItemTransactionsResponseType tranResponse = (GetItemTransactionsResponseType) oDeSerializer.Deserialize(oFileStream);
  }
}

Here is the content of the xslfile:
--------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:eBay="urn:ebay:apis:eBLBaseComponents">
  <xsl:output method="xml" indent="yes"/>
  <xsl:template match="/">
    <GetItemTransactionsResponseType>
      <xsl:copy-of select="//eBay:GetItemTransactionsResponse/*"/>
    </GetItemTransactionsResponseType>
  </xsl:template>
</xsl:stylesheet>

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