Enumerating context properties

Enumerating the context properties of a BizTalk message can be useful when trying to solve an error in an orchestration.

I wrote the following method to our tracing component that will loop through the context properties of an XLANGMessage.

because the context properties are hidden within the XMessage object in the Microsoft.XLANGs.Core name space, I had to use reflection to unwrap  XMessage in order to expose the GetContextProperties() method.


This method uses the internal method “Unwrap” in the XMessage object that is NOT intended to be used by user code DO NOT USE this method in a production environment, I use it only for testing purposes and remove the call to the method when finished.

public void WriteMessageProperties(XLANGMessage message)
        StringBuilder sb = new StringBuilder();
        if (message is Microsoft.XLANGs.Core.MessageWrapperForUserCode)
            Microsoft.XLANGs.Core..MessageWrapperForUserCode mwu = (Microsoft.XLANGs.Core..MessageWrapperForUserCode)message;
            Microsoft.XLANGs.Core.XMessage xmessage = (Microsoft.XLANGs.Core.XMessage)mwu.GetType()
            .GetMethod("Unwrap", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic)
            .Invoke(mwu, null);
            if (xmessage != null)
                System.Collections.Hashtable ht = xmessage.GetContextProperties();
                Microsoft.XLANGs.Core.XmlQNameTable tbl = new Microsoft.XLANGs.Core.XmlQNameTable(ht);
                foreach (System.Collections.DictionaryEntry dic in tbl)
                    Microsoft.XLANGs.BaseTypes.XmlQName N = (Microsoft.XLANGs.BaseTypes.XmlQName)dic.Key;
                    sb.Append(N.Name + " : " + dic.Value + Environment.NewLine);
        LogEntry entry = new LogEntry();
        entry.Message = sb.ToString();
        entry.Categories = new string[1] { sourceType };
        entry.Severity = System.Diagnostics.TraceEventType.Verbose;
    catch (Exception ex)
        Debug.WriteLine(ex.ToString(), "Error");
        // Call Dispose on the XLANGMessage object 
        // because the message doesn't belong to the 
        // .NET runtime - it belongs to the MessageBox database 

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