System.Tests.DelegateTests.DynamicInvoke C# (CSharp) Method

        public static void DynamicInvoke()
        {
            A a1 = new A();
            A a2 = new A();
            B b1 = new B();
            B b2 = new B();

            DynamicInvokeDelegate testDelegate = DynamicInvokeTestFunction;

            // Check that the delegate behaves as expected
            A refParam = b2;
            B outParam = null;
            A returnValue = testDelegate(a1, b1, ref refParam, out outParam);
            Assert.Same(returnValue, a1);
            Assert.Same(refParam, b1);
            Assert.Same(outParam, b2);

            // Check dynamic invoke behavior
            object[] parameters = new object[] { a1, b1, b2, null };

            object retVal = testDelegate.DynamicInvoke(parameters);
            Assert.Same(retVal, a1);
            Assert.Same(parameters[2], b1);
            Assert.Same(parameters[3], b2);

            // Check invoke on a delegate that takes no parameters.
            Action emptyDelegate = EmptyFunc;
            emptyDelegate.DynamicInvoke(new object[] { });
            emptyDelegate.DynamicInvoke(null);
        }