gistfile1.cs

public class LoginDialogDriver
{
    private String userName;
    private String password;
    private String message;
    private int loginAttempts;

    public LoginDialogDriver(String userName, String password)
    {
        this.userName = userName;
        this.password = password;
    }

    public bool loginWithUsernameAndPassword(String userName, String password)
    {
        loginAttempts++;
        bool result = this.userName.Equals(userName) && 
            this.password.Equals(password);
        if (result)
            message = String.Format("{0} logged in.", this.userName);
        else
            message = String.Format("{0} not logged in.", this.userName);
        return result;
    }

    public String loginMessage()
    {
        return message;
    }

    public int numberOfLoginAttempts()
    {
        return loginAttempts;
    }
}