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How to Save a Class Instance to an XML File

, 8 Feb 2014 CPOL
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Easily save an object as XML

eXceedingly siMpLe

Not too many things are easier than this. Once you have a class (you do have class, don't you? I mean, a class?), simply pass an instance of it (with values assigned to its members) to a method like this:

private void SaveToXML(Platypus platypup)
{
    System.Xml.Serialization.XmlSerializer writer =
        new System.Xml.Serialization.XmlSerializer(typeof(Platypus));

    StreamWriter file = new StreamWriter("Platypi.xml");
    writer.Serialize(file, platypup);
    file.Close();
}

The only thing you'll need to change in the code above is the name of the class type (yours is probably not "Platypus") in two places. You might want to change the variable name, too (from "platypup") and the name of the XML file (from "Platypi.xml").

After calling this method, you will be overjoyed (beside yourself with glee, even, perhaps) to discover something like the following file on disk:

<platypus xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <id>42</id>
  <nickname>Snoop Platypuppy Pup</nickname>
  <seriousname>Platypup</seriousname>
  <birthyear>1835</birthyear>
  <feed>Purina Platypus Chow</feed>
  <language>Plattdeutsch</language>
  <favoritemovie>Naplatypus Dynamite</favoritemovie>
</platypus>

If you find this tip useful, consider adopting an exceedingly neutral stand towards ambivalence.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

B. Clay Shannon
Founder Across Time & Space
United States United States
I am in the process of morphing from a software developer into a portrayer of Mark Twain. My monologue (or one-man play, entitled "The Adventures of Mark Twain: As Told By Himself" and set in 1896) features Twain giving an overview of his life up till then. The performance includes the relating of interesting experiences and humorous anecdotes from Twain's boyhood and youth, his time as a riverboat pilot, his wild and woolly adventures in the Territory of Nevada and California, and experiences as a writer and world traveler, including recollections of meetings with many of the famous and powerful of the 19th century - royalty, business magnates, fellow authors, as well as intimate glimpses into his home life (his parents, siblings, wife, and children).

Peripatetic and picaresque, I have lived in eight states; specifically, besides my native California (where I was born and where I now again reside) in chronological order: New York, Montana, Alaska, Oklahoma, Wisconsin, Idaho, and Missouri.

I am also a writer of both fiction (for which I use a nom de plume, "Blackbird Crow Raven", as a nod to my Native American heritage - I am "½ Cowboy, ½ Indian") and nonfiction, including a two-volume social and cultural history of the U.S. which covers important events from 1620-2006: http://www.lulu.com/spotlight/blackbirdcraven

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Comments and Discussions

 
SuggestionThe function can be more generally Pin
Mr. Xie.G.Gang 谢桂纲8-Feb-14 19:16
memberMr. Xie.G.Gang 谢桂纲8-Feb-14 19:16 

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