static void Main(string[] args)
{
//1. Func to delegates
string F(dynamic s)
{
Console.WriteLine(s); return(s);
}
Func <string, string> f = F;
//new A(f);//Error CS1503 Argument 1: cannot convert from 'System.Func<string, string>' to 'ConsoleApp3.Program.A.D'
new A(new A.D(f)); //I'm A!
new A(x => f(x)); //I'm A!
Func <string, string> f2 = s => { Console.WriteLine(s); return(s); };
//new A(f2);//Same as A(f)
new A(new A.D(f2)); //I'm A!
new A(x => f2(x)); //I'm A!
//You can even convert between delegate types
new A(new A.D(new B.D(f))); //I'm A!
//2. delegate to F
A.D d = s => { Console.WriteLine(s); return(s); };
Func <string, string> f3 = d.Invoke;
f3("I'm f3!"); //I'm f3!
Func <string, string> f4 = new Func <string, string>(d);
f4("I'm f4!"); //I'm f4!
Console.ReadLine();
}
public B() {
string error = "";
if (typeof (C) != typeof (A.B.C))
error += " 'typeof' keyword,";
object o0 = new C ();
if (o0.GetType() != typeof (A.B.C))
error += " 'new' keyword,";
C o1 = new C ();
if (o1.GetType () != typeof (A.B.C))
error += " type declaration,";
object o2 = new A.B.C ();
if (!(o2 is C))
error += " 'is' keyword,";
object o3 = o2 as C;
if (o3 == null)
error += " 'as' keyword,";
try {
object o4 = (C) o2;
}
catch {
error += " type cast,";
}
try {
object o5 = (C) (o2);
}
catch {
error += " invocation-or-cast,";
}
object o6 = new C [1];
if (o6.GetType ().GetElementType () != typeof (A.B.C))
error += " array creation,";
if (typeof (C []).GetElementType () != typeof (A.B.C))
error += " composed cast (array),";
ArrayList a = new ArrayList ();
a.Add (new A.B.C ());
try {
foreach (C c in a)
{
}
}
catch {
error += " 'foreach' statement,";
}
if (error.Length != 0)
throw new Exception ("The following couldn't resolve C as A+B+C:" + error);
}
static void Main(string[] args)
{
A a = new A();
B b = new B();
C c = new C();
A.D d1 = new A.D(b.m2); //singlecast delegate
A.D d2 = new A.D(c.m3); //singlecast delegate
A.D d3 = new A.D(c.m4); //single cast deligate
//a.m1(d1);
A.D d4 = d1 + d2 + d3; //Multicast deligate
a.m1(d4);
Console.ReadLine();
}
public B()
{
using (C c = new C()) {
}
}
public static void Main()
{
object o = new C();
}
public B()
{
string error = "";
if (typeof(C) != typeof(A.B.C))
{
error += " 'typeof' keyword,";
}
object o0 = new C();
if (o0.GetType() != typeof(A.B.C))
{
error += " 'new' keyword,";
}
C o1 = new C();
if (o1.GetType() != typeof(A.B.C))
{
error += " type declaration,";
}
object o2 = new A.B.C();
if (!(o2 is C))
{
error += " 'is' keyword,";
}
object o3 = o2 as C;
if (o3 == null)
{
error += " 'as' keyword,";
}
try {
object o4 = (C)o2;
}
catch {
error += " type cast,";
}
try {
object o5 = (C)(o2);
}
catch {
error += " invocation-or-cast,";
}
object o6 = new C [1];
if (o6.GetType().GetElementType() != typeof(A.B.C))
{
error += " array creation,";
}
if (typeof(C []).GetElementType() != typeof(A.B.C))
{
error += " composed cast (array),";
}
ArrayList a = new ArrayList();
a.Add(new A.B.C());
try {
foreach (C c in a)
{
}
}
catch {
error += " 'foreach' statement,";
}
if (error.Length != 0)
{
throw new Exception("The following couldn't resolve C as A+B+C:" + error);
}
}
public B () {
using (C c = new C ()) {
}
}
public static void Main()
{
object o = new C();
}
