The File class provides the Encrypt and the Decrypt methods
to restrict other users to open and read a file.
Encrypt a File in C#
The Encrypt method encrypts a file so that only the account
used to encrypt the file can decrypt it.
string fileName =
@"c:\temp\Mahesh.txt";
File.Encrypt(fileName);
Decrypt a File in C#
The Decrypt method decrypts an encrypted file. Only account
that has encrypted a file can decrypt a file.
string fileName =
@"c:\temp\Mahesh.txt";
File.Decrypt(fileName);