C#的封装_封装元器件

 private int age;//private:私有的,仅供内部进行访问
 public int Age//public:公有的,任何地方都可以访问
        { 
   
            //获取或读取字段值
            get { 
    return age; }//属性的读取
            set { 
    age = value; }//属性赋值(value为关键字)
        }

first.Age = 21;
Console.WriteLine("年龄为:{0}",first.Age);

 public void List (double num1,double num2,string fuhao) 
{ 

double count;
switch (fuhao)
{ 

case "+":
count =num1 + num2;
Console.WriteLine("您要计算的值为:{0}" , count);
break;
case "-":
count = num1 - num2;
Console.WriteLine("您要计算的值为:{0}" , count);
break;
case "×":
count = num1 * num2;
Console.WriteLine("您要计算的值为:{0}" , count);
break;
case "÷":
count = num1 / num2;
Console.WriteLine("您要计算的值为:{0}" , count);
break;
}
}

//分别实现四个功能
first.List(20,10,"×");
first.List(20, 10, "+");
first.List(20, 10, "-");
first.List(20, 10, "÷");

public int Then(int[]list)
{ 

int k = 0;
for (int i = 0; i < list.Length; i++)
{ 

k += list[i];
}
return k;
}

            int[] arry = { 
1,2,3,5,4,6,9,8,7 };
int arry1= first.Then(arry);
Console.WriteLine(arry1);

 public void List (double num1,double num2,string fuhao) { 
}

 first.List(20,10,"×");

分别是设置btn的宽高和获取btn的宽高
Canvas.SetTop(btn, 10);
Canvas.SetLeft(btn, 1400);
Canvas.GetLeft(btn);
Canvas.GetTop(btn);