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Editorial Team
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Asked: 2026-05-12T20:33:39+00:00

I have a class in silverlight that I would like to store to disk.

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I have a class in silverlight that I would like to store to disk. It contains a couple of basic CLR objects – strings and integers, and a WPF BitmapImage.

What is the best way to store this to a file? I have tried serializing the class and dumping it to file, but BitmapImage does not support serializing.

Ideally, I want to store the bitmapimage as a physical image on disk (.png .jpg etc), and store the CLR objects in some key-value pair settings file. This is so easy in WPF, since it natively supports KVP project settings, but in Silverlight there are many more restrictions.

Any advice is much appreciated!

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1 Answer

  1. Editorial Team

    In order to store KeyValuePairs without much fuss on the local machine, I’d consider using IsolatedStorageSettings.ApplicationSettings dictionary collection.
    Here’s an example of that: http://msdn.microsoft.com/en-us/library/cc221360(VS.95).aspx

    If you’d like to store a BitmapImage to IsoStore, I’d suggest using a Image Encoder of sorts in conjunction with WriteableBitmap. Placing your BitmapImage (via an Image control) in a WriteableBitmap will give you access to each individual pixel. Using a PngEncoder you can save an actual image file for that image.
    Jeff prosise has a sample of that here: http://www.wintellect.com/CS/blogs/jprosise/archive/2009/07/17/fun-with-savefiledialog-and-writeablebitmap.aspx

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