选择要实例化c#的类

public class MyClass
{
    public int MyProperty { get; set; }

    public void MyMethod()
    {
        Console.WriteLine("Hello, World!");
    }
}

public static void Main(string[] args)
{
    MyClass myInstance = new MyClass();
    myInstance.MyProperty = 42;
    myInstance.MyMethod();
}

public class MyClass
{
    public int MyProperty { get; set; }

    public MyClass(int myProperty)
    {
        MyProperty = myProperty;
    }

    public void MyMethod()
    {
        Console.WriteLine("Hello, World!");
    }
}

public static void Main(string[] args)
{
    MyClass myInstance = new MyClass(42);
    myInstance.MyMethod();
}