源码：

	复制代码 代码如下:

	

	[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：

	复制代码 代码如下:

	

	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();

	     }

	 }