BusinessLogic.SqlMembershipProvider.UnEncodePassword C# (CSharp) Method

        private string UnEncodePassword(string encodedPassword)
        {
            string password = encodedPassword;

            switch (PasswordFormat)
            {
                case MembershipPasswordFormat.Clear:
                    break;
                case MembershipPasswordFormat.Encrypted:
                    password =
                      Encoding.Unicode.GetString(DecryptPassword(Convert.FromBase64String(password)));
                    break;
                case MembershipPasswordFormat.Hashed:
                    throw new ProviderException("Cannot unencode a hashed password.");
                default:
                    throw new ProviderException("Unsupported password format.");
            }

            return password;
        }