我需要一个接口objectIMyInterface obj;
t,它可以吞下从它继承的所有类对象,因为我的示例代码运行良好但在我需要实现函数我不需要因为IMyInterface
需要它,我尝试这两种方式,但都失败了:
virtual class MethodThatNotBelongToUsAll{}
并尝试class ClassA_wrap : ClassA, MethodThatNotBelongToUsAll, IMyInterface
但收到错误class 'ClassA_wrap' cannot have multiple base classes
interface IMyInterface
改为virtual class IMyInterface{}
,但obj = new ClassA_wrap();
线显示错误cannot implicitly convert type "ClassA_wrap" to "IMyInterface"
谁能帮我这个?谢谢!
interface IMyInterface
{
int Foo0 { get; } //ClassA,B,C method
int FooWrap(int F); //ClassA_wrap,B_wrap,C_wrap method
int FooA(int F); // ClassA method
int FooB(int F); // ClassB method
int FooC(int F); // ClassC method
}
class ClassA //Base Class, can't edit
{
public int Foo0{ get { return 1; } }
public int FooA(int F) { return F; }
}
class ClassB //Base Class, can't edit
{
public int Foo0 { get { return 2; } }
public int FooB(int F) { return F; }
}
class ClassC //Base Class, can't edit
{
public int Foo0 { get { return 3; } }
public int FooC(int F) { return F; }
}
class ClassA_wrap : ClassA, IMyInterface
{
public int FooB(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooC(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooWrap(int F)
{
return FooA(F)*10+1;
}
}
class ClassB_wrap : ClassB, IMyInterface
{
public int FooA(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooC(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooWrap(int F)
{
return FooB(F)*20+2;
}
}
class ClassC_wrap : ClassC, IMyInterface
{
public int FooA(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooB(int F) { return -1; } // I want to get rid of this line, but Interface require to imp this...
public int FooWrap(int F)
{
return FooC(F)*30+3;
}
}
class MainClass
{
static void Main()
{
IMyInterface obj; //I need IMyInterface object that can swallow all three classes depend on flag
int flag = 2; // or 1 or 3
if(flag==1)
obj = new ClassA_wrap();
else if(flag==2)
obj = new ClassB_wrap();
else
obj = new ClassC_wrap();
//-----------------------------------------
Console.WriteLine( obj.Foo0);
//-----------------------------------------
if(obj is ClassA_wrap)
Console.WriteLine(obj.FooA(11));
if (obj is ClassB_wrap)
Console.WriteLine(obj.FooB(22));
if (obj is ClassC_wrap)
Console.WriteLine(obj.FooC(33));
//-----------------------------------------
Console.WriteLine(obj.FooWrap(1));
Console.Read();
}
}
在这里阅读:Interface Segregation Principle
我想你需要看一下qazxsw poi,这是qazxsw poi
这个原则说如果你在接口中有方法,那么创建单独的拦截,你的类不会实现。
我建议像这样设计
SOLID