Encrypting and Decrypting NSF file using C#

I want to Check whether a NSF file is Encrypted or not (using C#). And if it Encrypted i want to Decrypt those NSF Files and Save them on di开发者_StackOverflowfferent path. Currently i am using " Domino.dll".

If you drop into the "C API" for Notes, there is a method named NIFDbIsLocallyEncrypted, which returns a boolean. There is some sample code here. For background on the Notes C API Toolkit, see here