ちょっと備忘録

public class UserInfo
    : System.IEquatable<UserInfo>
{
    public string UserName { get; private set; }
    public string MachineName { get; private set; }

    public UserInfo(string userName, string machineName)
    {
        this.UserName = userName;
        this.MachineName = machineName;
    }

    public bool Equals(UserInfo other)
    {
        if (Object.ReferenceEquals(other, null))
            return false;

        if (object.ReferenceEquals(this, other))
            return true;

        if (this.GetType() != other.GetType())
            return false;

        return (this.UserName == other.UserName)
            && (this.MachineName == other.MachineName);
    }

    public override bool Equals(object obj)
    {
        return this.Equals(obj as UserInfo);
    }

    public override int GetHashCode()
    {
        return this.UserName.GetHashCode() ^ this.MachineName.GetHashCode();
    }

    public override string ToString()
    {
        return string.Concat("ユーザー名：", this.UserName, "(", this.MachineName, ")");
    }

    public static bool operator ==(UserInfo lhs, UserInfo rhs)
    {
        if (Object.ReferenceEquals(lhs, null))
        {
            if (Object.ReferenceEquals(rhs, null))
                return true;
            else
                return false;
        }

        return lhs.Equals(rhs);
    }

    public static bool operator !=(UserInfo lhs, UserInfo rhs)
    {
        return !(lhs == rhs);
    }

}