I was just building something in Silverlight that makes use of the Isolated Storage, and I uncovered a bug in Silverlight 2 Beta 2 that cause's it to crash and you are unable to write to the Isolated Storage. So, I found the location on disk where Silverlight stores the files for Isolated Storage.
Here's the file location under Windows Vista / Windows 7 where Silverlight stores the files for Isolated Storage:
C:\Users\{username}\AppData\LocalLow\Microsoft\Silverlight\is
Just replace the text "{username}" with the Windows Username of the user the data is stored for.
The bug that I ran into was also causing the Silverlight Configuration dialog (which pops up when you right click on Silverlight content within the browser) to crash when I selected the Application Storage tab. So, this bug prevented me from clearing the cache, and I wasn't able to get my app working again. I just deleted all the files within the above directory and it fixed my problem.
Wow! This was a great read. I'd already started making some correct assumptions about the storage, like the fixed record sizes for nodes, so that id's would map directly to disk locations, but you really filled in the gaps for the more complex structures, like the strings and arrays and string[] property stores. Very nice indeed.
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