private void AddUser()
{
Console.Out.WriteLine("Enter user name");
PrintInputCharacter();
string newUsername = Console.In.ReadLine();
Console.Out.WriteLine("Enter user default password");
PrintInputCharacter();
string newPassword = PasswordHash(Console.In.ReadLine(), kSaltString);
if (controller.CheckUserNameExist(newUsername))
{
Console.Out.WriteLine("Username exists, please change a new username");
}
else
{
controller.AddUser(newUsername, newPassword);
Console.Out.WriteLine("Add user success");
}
}