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I would really, really like to store a URI as the RowKey value in Azure Table storage. According to the documentation, RowKeys can't contain characters commonly found in URIs (/, \, #, ?).
The solution seems simple: Just encode the URI. But that doesn't work. For whatever reason, any values containing the sequence %2f (the encoded value for a forward-slash) can be inserted, but not queried even though '%2f' does not contain any forbidden characters.
Okay, so how about base64 encoding? Nope. It produces the occasional forward-slash character, which is not allowed.
So is there a method of encoding a string (a URI) that can be reliably stored as the RowKey in Azure Table? Preferably, but not necessarily, something human-readable.