Extarcting data from Xml string in orchestration

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    • September 10, 2008 at 3:47 AM #20673
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        Hi, I have this problem and I’m new to BizTalk, and looking for help here..

         I have an expression shape inside my orchestration that calls a .net method which returns an Xml string.  I need to get the number of occurrences of a specific field in this Xml, so I created an Xml document in the orchestration and fetched a NodeList for the field, and then got the Count property of it. On compile I got the error : “a non-serializable object type ‘System.Xml.XmlNodeList myXmlNodeList’ can only be declared within an atomic scope or service”. Here is the code

        myXmlDoc.LoadXml(xmlStr);

        myXmlNodeList =  myXmlDoc.SelectNodes(“//node”);

        intCount = myXmlNodeList.Count;

        Actually I’m not sure if this is the right way or the best practice to do it in the first place..!

         

      • September 10, 2008 at 4:38 AM #20675
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           Hi

          Yeah that’s true.

          All object instances that your orchestration refers to directly or indirectly (as through other objects) must be serializable for your orchestration state to be persisted.

          So there are two solutions for that

          1.You can have a nonserializable object declared inside an atomic transaction. You can do this because atomic scopes do not contain persistence points.

          2. You can serialize your own classes if you mark them with [Serializable] attribute

          Best reagdrs,

          Nandika

           

          • September 10, 2008 at 7:14 AM #20679
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               Thank Nandiaka for ur reply..

              I also found another quick approch to get to the field, using xpath:

              intCount = System.Convert.ToInt32(xpath(BiztalkMsg, “count(//nodeName)”));

               

              Regards,

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