.NET (Core and Framework)

<br />
class A<br />
{<br />
 protected void B();<br />
}<br />
<br />
class C<br />
{<br />
 public void D()<br />
 {<br />
   A a = new A();<br />
   Delegate del = new Delegate(a.B);<br />
   //This will effectively call a.B() which shouldn't be possible<br />
   del();<br />
  }<br />
<br />
 public void E()<br />
 {<br />
   A a = new A();<br />
   //This won't work<br />
   a.B();<br />
  }<br />
}<br />
<br />

error CS0122: 'A.B()' is inaccessible due to its protection level

public delegate void TestDelegate();
 
class A
{
    protected void B()
    {
        Console.WriteLine("Hello from A.B!");
    }
}
 
class C
{
    static void Main()
    {
        A a = new A();
        Delegate del = Delegate.CreateDelegate(typeof(TestDelegate), a, "B");
        del.DynamicInvoke(new object[] {});
    }
}

<object id="myCtl"
  classid="http://www.mypage.com/mycode.dll#myClass">
</object>

Bitmap bmp2 = Bitmap( bmp1 );