实用代码C#之IP地址和整数的互转

源码

[StructLayout(LayoutKind.Explicit)]
public struct IP
{
    public IP(UInt32 value)
    {
        this._text1 = 0;
        this._text2 = 0;
        this._text3 = 0;
        this._text4 = 0;
        this._value = value;
    }
    public IP(Byte text1, Byte text2, Byte text3, Byte text4)
    {
        this._value = 0;
        this._text1 = text1;
        this._text2 = text2;
        this._text3 = text3;
        this._text4 = text4;
    }
    [FieldOffset(0)]
    private UInt32 _value;
    [FieldOffset(0)]
    private Byte _text1;
    [FieldOffset(1)]
    private Byte _text2;
    [FieldOffset(2)]
    private Byte _text3;
    [FieldOffset(3)]
    private Byte _text4;

    public UInt32 Value
    {
        get { return this._value; }
        set { this._value = value; }
    }
    public Byte Text1
    {
        get { return this._text1; }
        set { this._text1 = value; }
    }
    public Byte Text2
    {
        get { return this._text2; }
        set { this._text2 = value; }
    }
    public Byte Text3
    {
        get { return this._text3; }
        set { this._text3 = value; }
    }
    public Byte Text4
    {
        get { return this._text4; }
        set { this._text4 = value; }
    }

    public override string ToString()
    {
        return String.Format("{0}.{1}.{2}.{3}", this._text1.ToString(), this._text2.ToString(),
            this._text3.ToString(), this._text4.ToString());
    }

    public static implicit operator IP(UInt32 value)
    {
        return new IP(value);
    }
    public static explicit operator UInt32(IP ip)
    {
        return ip._value;
    }
}

测试

class Program
{
    static void Main(string[] args)
    {
        IP ip = new IP(192,168,1,1);
        Console.WriteLine(ip);
        UInt32 value = (UInt32)ip;
        Console.WriteLine(value);
        Console.WriteLine(ip.Value);
        IP ip2 = (IP)(1234567);
        Console.WriteLine(ip2);
        
        Console.ReadKey();
    }
}