Class TestClass{

private int i;

public int count {return i};

}

static int getSum(){

int  count = 0;

___________________

{

    count += i;

}

return count;

}

static void Main(string [] args)

{

int sum = getSum();

Console.Write("结果是：{0}"，sum);//打印出的值是1到10的和

}

}

     public int x;

     public int y;

     public MyClass(int a,int b){

        x=a;

        y=b;

     }

     public void sum(){

          int sum = x+y;

          Console.WriteLine("{0}",sum);

     }

}

 class Program

    {

        static void Main(string[] args)

        {

            MyClass obj = new MyClass(1,2);

            obj.x = 2;

            obj.sum()

            Console.ReadLine();

        }

    }

运行结果

     public int x;

     public int y;

     public MyClass(int a,int b){

        x=a;

        y=b;

     }

     public void multi(){

          int res = x * y;

          Console.WriteLine("{0}",res);

     }

}

 class Program

    {

        static void Main(string[] args)

        {

            MyClass obj = new MyClass(2,3);

            obj.x = 3;

            obj.multi()

            Console.ReadLine();

        }

    }

{

  public Person()

   {

 Console.WriteLine("父类构造函数")；

   }

}

class Student:Person

{

  public Student()

   {

 Console.WriteLine("子类构造函数")；

   }

}

class Program

{

    static void Main(string [] args)

{

Student s = new Student();

Console ReadLine();

}

}

{

   public void Method()

   {

       Console.WriteLine("Father method");

   }

}

public class Son : Base

{

   public new void Method()

   {

       Console.WriteLine("Son method");

   }

}

class Program

{

    static void Main(string[] args)

    {

       Father p = new Son();

       p.Method();

Console.ReadLine();

    }

}

class Program

{

static void Main(string[] args)

{

Console.WriteLine(Method()

}

static string Method()

{

string str = "1";

try

{

         Int i= 0;

if(5/i==0)

         str += "2”;

}

Catch

{

         str += "3";

return str;

}

Finally

{

         str +="4";

}

Return str;

}

}

string s2=s1;

Console.Write(s1==s2);//1

Console.Write(Object.ReferenceEquals(s1,s2));//2

s2="VB";

Console.Write(s1==s2);//3

Console.Write(Object.ReferenceEquals(s1,s2));//4