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    <p>I don't know how you use that code, but one thing that strikes me is that you don't release your resources. For instance, if you call <code>Serialize(obj)</code> a lot of times with a lot of large objects, you will end up having a lot of memory being used that is not released directly, however the <code>GC</code> should handle that properly, but you should always release your resources.</p> <p>I've tried this piece of code:</p> <pre><code>public static byte[] Serialize(object obj) { Type type = obj.GetType(); DataContractSerializer dcs = new DataContractSerializer(type); using (var stream = new MemoryStream()) { dcs.WriteObject(stream, obj); return stream.ToArray(); } } </code></pre> <p>With the following <code>Main</code>-method in a Console Application</p> <pre><code>static void Main(string[] args) { var filipEkberg = new Person {Age = 24, Name = @"Filip Ekberg"}; var obj = Serialize(filipEkberg); } </code></pre> <p>However, my <code>byte</code>-array is not nearly as big as yours. <a href="https://stackoverflow.com/questions/796719/c-compact-framework-outofmemoryexception-with-xmlserializer-serialize">Having a look at this similar issue</a>, you might want to consider checking out <a href="http://code.google.com/p/protobuf-net/" rel="nofollow noreferrer">protobuf-net</a>.</p> <p>It might also be interesting to know what you are intending to do with the serialized data, do you need it as a <code>byte</code>-array or could it just as well be XML written to a text-file?</p>
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    1. POSystem.OutOfMemory exception when calling MemoryStream.ToArray() after serializing object with DataContractSerializer
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    1. USCommunity
    1. USFilip Ekberg
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    1. COedited post to explain how it is used
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      1. USBrad Boyce
    2. CO@Brad, as @configurator said and as the link I provided also says, it's a limitation and @configurator explains sort of why it's like that. You will need to look into alternatives like serializing to disk instead of memory. Hope this helps.
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      1. USFilip Ekberg
    3. COOk, I've been testing with your approach Filip, and it cleared up the write, but then I'm still getting outOfMemory on the read (even with a using statement). So this approach won't work for me, although I agree that it is better to wrap in a using that to not have one. @configurator 's approach won't work for me either, because I can't put a 174 M file on my user's drive, and his approach doesn't compress. I hesitant to use protobuf-net as I am concerned about adding an external dependency that may not migrate well as new silverlight versions are released.
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