装饰者模式_Decorator
装饰者模式:
例子:对StringBuilder进行装饰
public class MyString { private StringBuilder sb = new StringBuilder(); public static implicit operator MyString(string s) { var ms = new MyString(); ms.sb.Append(s); return ms; } public static MyString operator +(MyString msb,string s) { msb.Append(s); return msb; } public MyString Append(string s) { sb.Append(s); return this; } public override string ToString() { return sb.ToString(); } } class Program { static void Main(string[] args) { MyString my = "123"; my += "456"; Console.WriteLine(my); } }