Read xprocessinginstruction using linq to xml

I have this much:

                        XDocument doc = XDocument.Load(existFile);

                        if (doc.FirstNode is XProcessingInstruction)
                        {
                            XProcessingInstruction PI = (XProcessingInstruction)doc.FirstNode;
                           
                        }

And, ?PI.Data yields:

"format=\"850\" sender=\"AMAZON\" receiver=\"MYCLIENT\" ctrl=\"1\""

How do I read each of the individual attributes (format,sender,receiver,ctrl)?  Is there a method on PI.Data that will do this?  I haven't found one yet.
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g_johnsonAsked:
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zc2Commented:
You can try to use a regular expression:
                MatchCollection mm = Regex.Matches(PI.Data, @"(\w+)=\\""(.+?)\\""");
                foreach( Match m in mm )
                    Console.WriteLine( "Found {0} = {1}", m.Groups[1].Value, m.Groups[2].Value );

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g_johnsonAuthor Commented:
I don't know much about Regex, but using the above mm returns nothing (the foreach is skipped); mm.Count() returns 0.

But, if what you are saying is that you just use string handling techniques, I can figure something else out.  I'm just wondering if there is some System.Linq.XML standard method to use to parse it out.
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zc2Commented:
Probably there's no standard XML methods. Only an XElement can give access to its attributes, but a PI is not derived from XElement.

I strongly recommend you to get yourself familiar with the regular expressions. It's a very powerful technique to handle string data, could by used everywhere.
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g_johnsonAuthor Commented:
Thanks
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