IsolatedStorageFile.GetLastWriteTime for .NET 3.5

Question

I am trying to see if I can port a .NET 4 project (specifically, Cassette) to 3.5.

I finished the entire main project but now I'm on the last error and I can't seem to figure out a workaround.

Cassette uses Isolated Storage to store asset files and in .NET 4 the related classes have been overhauled to be much more useful. In .NET 3.5, however, there are a lot of things missing.

I am stuck on getting the last write time of an isolated file. Is there a way to do this in 3.5 or is it a lost cause?

MSDN for .NET 4

Nacelle

How did you get on with this? – Zephyrus

@jacko, for Cassette they did not use LastFileWriteTime for isolated storage, it was only used on actual files. So in the end it simply throws a NotImplementedException. – Nacelle

In addition, I originally created a index file that would record write times for any file, then it would look it up when you asked. However, as I said above, overkill for Cassette specifically. – Nacelle

Example of above workaround (gotta love version control!): github.com/kamranayub/cassette/blob/… – Nacelle

I meant, with the cassette 3.5 fork :) – Zephyrus

Answer 1

Perhaps scrap support for Isolated Storage in the .NET 3.5 version of Cassette? It's easy to use a regular file system directory (e.g. App_Data) instead.

Idiopathy

So if I removed all the IsolatedStorage related classes/interfaces, that would be sufficient? – Nacelle

Follow-up: we found Cassette did not even need to use LastFileWriteTime so we simply threw a NotImplementedException. Example of index file workaround: github.com/kamranayub/cassette/blob/… – Nacelle