Function which returns reference to be edited in c#

class foo
{
    public int value;
}

class bar
{
    bar()
    {
       m_foo = new foo();
       m_foo.value = 42;
    }
    private m_foo;
    foo getFoo(){return m_foo;}
}

class main
{
    int main()
    {
        bar b = new bar();
        b.getFoo().value = 37;
    }
}

using System;

namespace ConsoleApplication1
{
	public class foo
	{
		public int value;
	};

	public class bar
	{
		public bar()
		{
			m_foo = new foo();
			m_foo.value = 42;
		}

		private foo m_foo;
		public foo getFoo() { return m_foo; }
	};

	public class Program
	{
		public static int Main()
		{
			bar b = new bar();
			b.getFoo().value = 37;
			return 0;
		}
	};
}

class bar
{
    private m_foo;
    bar()
    {
       m_foo = new foo();
       m_foo.value = 42;
    }


    foo Foo
    {
    get { return m_foo;}
    }
}