static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon oct = new Octagon();
Console.WriteLine(oct);
// We now must use casting to access the Draw()
// members.
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// Shorthand notation if you don't need
// the interface variable for later use.
((IDrawToPrinter)oct).Draw();
// Could also use the "as" keyword.
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon oct = new Octagon();
// This is now a compiler error!
// oct.Draw();
// We now must use casting to access the Draw()
// members.
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// Shorthand notation if you don't need
// the interface varaible for later use.
((IDrawToPrinter)oct).Draw();
// Always a good practice to test
// before extracting an interface.
if (oct is IDrawToMemory)
{
((IDrawToMemory)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon octagon = new Octagon();
IDrawToForm form = octagon;
form.Draw();
IDrawToMemory memory = octagon;
memory.Draw();
IDrawToPrinter printer = octagon;
printer.Draw();
// Сокращенная нотация, если переменная интерфейса не нужна
((IDrawToPrinter)octagon).Draw();
// Можно было бы также использовать ключевое слово as
if (octagon is IDrawToMemory)
{
((IDrawToMemory)octagon).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon o = new Octagon();
IDrawToForm x = (IDrawToForm)o;
IDrawToBuffer y = (IDrawToBuffer)o;
IDrawToPrinter z = (IDrawToPrinter)o;
x.Draw(); //--|
y.Draw(); //--|==> CALL TO SAME METHOD
z.Draw(); //--|
Pentagon p = new Pentagon();
IDrawToForm a = (IDrawToForm)p;
IDrawToBuffer b = (IDrawToBuffer)p;
IDrawToPrinter c = (IDrawToPrinter)p;
a.Draw(); //--==> CALL TO IDrawToForm.Draw()
b.Draw(); //--==> CALL TO IDrawToBuffer.Draw()
c.Draw(); //--==> CALL TO IDrawToPrinter.Draw()
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
// All of these invocations call the
// same Draw() method.
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// Shorthand notation if you don't need
// the interface variable for later use.
((IDrawToForm)oct).Draw();
// Could also use the "is" keyword.
if (oct is IDrawToForm dtm)
{
dtm.Draw();
}
IDrawToPrinter itfPrinter = (IDrawToPrinter)oct;
itfPrinter.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon octagon = new Octagon("Octagon");
Circle circle = new Circle("Circle");
// We now must use casting to access the Draw()
// members.
IDrawToForm drawToForm = (IDrawToForm)octagon;
drawToForm.Draw();
drawToForm = (IDrawToForm)circle;
drawToForm.Draw();
// Shorthand notation if you don't need
// the interface variable for later use.
((IDrawToPrinter)octagon).Draw();
// Will draw twice just to show use of as keyword
if (octagon is IDrawToMemory)
{
((IDrawToMemory)octagon).Draw();
(octagon as IDrawToMemory).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("****** Fun with Interface Name Clashes ******\n");
// All of these invocations call
// the same Draw() method.
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
IDrawToPrinter itfPrinter = (IDrawToPrinter)oct;
itfPrinter.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
// We now must use casting to acces the Draw() members.
Console.WriteLine();
((IDrawToPrinter)oct).Draw();
// Could also use the is keyword
if (oct is IDrawToMemory)
{
((IDrawToMemory)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon oct = new Octagon();
//Для доступа к членам Draw() должно использоваться приведение.
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
//Сокращенная форма, если переменная интерфейса не нужна.
((IDrawToMemory)oct).Draw();
}
static void ExampleManyInterfaces()
{
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
((IDrawToPrinter)oct).Draw();
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Claches *****\n");
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
((IDrawToPrinter)oct).Draw();
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun With Interface Name Clashes *****\n");
Octagon oct = new Octagon();
// We now myst use casting to access the Draw() members
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// Shorthand notation if you don't need the inerface
// variable for later use
((IDrawToPrinter)oct).Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
((IDrawToMemory)oct).Draw();
if (oct is IDrawToPrinter)
{
((IDrawToPrinter)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon oct = new Octagon();
IDrawToForm octF = (IDrawToForm)oct;
octF.Draw();
IDrawToMemory octM = (IDrawToMemory)octF;
octM.Draw();
IDrawToPrinter octP = (IDrawToPrinter)octF;
octM.Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("**** Fun with interface name clashes ****");
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
((IDrawToMemory)oct).Draw();
if (oct is IDrawToPrinter)
{
((IDrawToPrinter)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
// All of these invocations call the
// same Draw() method!
Octagon oct = new Octagon();
//oct.Draw() is no longer available w/o cast
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
IDrawToPrinter itfPriner = (IDrawToPrinter)oct;
itfPriner.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
Console.ReadLine();
}
public static void InterfaceClashes()
{
Console.WriteLine("****** Fun with Interface Name Clashes ****\n");
Octagon o = new Octagon();
//Long form
IDrawToForm idrawToForm = (IDrawToForm)o;
idrawToForm.Draw();
//Shorter form
((IDrawToPrinter)o).Draw();
//Using the 'is a' methodology
if (o is IDrawToMemory dtm)
{
dtm.Draw();
}
}
/// <summary>
/// Explicitly Interface Implementation
/// </summary>
private void ExplicitInterfaceImplementation()
{
Console.WriteLine("=> Explicitly Interface Implementation: ");
OctagonWithExplicitBinding oct = new OctagonWithExplicitBinding();
// We must use casting to access the Draw() method
IDrawToForm iftForm = (IDrawToForm)oct;
iftForm.Draw();
((IDrawToPrinter)oct).Draw();
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
Console.WriteLine();
}
static void Main(string[] args)
{
Octogon oct = new Octogon();
//We not must use cast to access the draw()
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.draw();
//shorthand notation if you dont need the inerface
//variable for later use
((IDrawToPrinter)oct).draw();
//Could as use the is keyword
if (oct is IDrawToMemory)
{
((IDrawToMemory)oct).draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Clashes *****");
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
//Сокращенная форма
((IDrawToMemory)oct).Draw();
// Можно с is
if (oct is IDrawToPrinter dtm)
{
dtm.Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon oct = new Octagon();
// 现在必须使用转换来访问Draw()成员
IDrawToForm itform = (IDrawToForm)oct;
itform.Draw();
// 如果以后不需要接口变量,可以简化成这个形式
((IDrawToPrinter)oct).Draw();
// 也可以用"is"关键字
if (oct is IDrawToMemory)
{
((IDrawToMemory)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****");
// All of these invocations call the same Draw() method!
Octogon oct = new Octogon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// shorthand notation if variable not needed afterward
((IDrawToPrinter)oct).Draw();
// can also use the "is" keyword
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
// All of these invocations call the same Draw() method!
Octagon oct = new Octagon();
#region Without Explicit Interface Implementation
//IDrawToForm itfForm = (IDrawToForm)oct;
//itfForm.Draw();
//IDrawToPrinter itfPriner = (IDrawToPrinter)oct;
//itfPriner.Draw();
//IDrawToMemory itfMemory = (IDrawToMemory)oct;
//itfMemory.Draw();
#endregion
// We now must use casting to access the Draw() members.
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
// Shorthand notation if you don't need the interface variable for later use.
((IDrawToPrinter)oct).Draw();
// Could also use the "is" keyword.
if (oct is IDrawToMemory dtm)
{
dtm.Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
// All of these invocations call the
// same Draw() method!
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
IDrawToPrinter itfPrinter = (IDrawToPrinter)oct;
itfPrinter.Draw();
// Must use casting to access the Draw() when explicitly implemented.
IDrawToForm itfForm2 = (IDrawToForm)oct;
itfForm2.Draw();
// Shorthand notation if you don't need
// the interface variable for later use.
((IDrawToMemory)oct).Draw();
// Could also use the "is" keyword.
if (oct is IDrawToPrinter)
{
((IDrawToPrinter)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon oct = new Octagon();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
/*
* ((IDrawToPrinter)oct).Draw();
*
* if (oct is IDrawToMemory)
* ((IDrawToMemory)oct).Draw();
*/
IDrawToPrinter itfPriner = (IDrawToPrinter)oct;
itfPriner.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
Console.ReadLine();
}
