.net password protection

Question

need coding in .net for protecting a file using password?

Answer 1

That is very, very vague. You can enforce ACLs on files using File.SetAccessControl; beyond that, you'll need to be more specific. For example, you might want to look at System.Security.Cryptography.

Answer 2

Microsoft have an article on encrypting a file using C#.

http://support.microsoft.com/kb/307010

Answer 3

Well, can you give some more details? The simplest thing you could do is to use the .NET encryption APIs and choose some symmetric key algorithm whereby you would encrypt the file and the "password" would simply be the symmetric key.