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)
{
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");
// 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)
{
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");
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)
{
Console.WriteLine("***** Fun with Interface name clashes *****\n");
Octagon oct = new Octagon();
////all of these use the same Draw() method!
//IDrawToForm itfForm = (IDrawToForm)oct;
//itfForm.Draw();
//IDrawToPrinter itfPrinter = (IDrawToPrinter)oct;
//itfPrinter.Draw();
//IDrawToMemory itfMemory = (IDrawToMemory)oct;
//itfMemory.Draw();
//using casting to access Draw()...
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
//shorthand that would work if you don't need the "itfForm" variable above
((IDrawToPrinter)oct).Draw();
//using the "is" keyword
if (oct is IDrawToMemory)
{
((IDrawToMemory)oct).Draw();
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("*** Fun with intarface name calshes ***\n");
Octagon oct = new Octagon();
IDrowToForm idtf = (IDrowToForm)oct;
idtf.Draw();
IDrawToMemory idtm = (IDrawToMemory)oct;
idtm.Draw();
IDrawToPrinter idtp = (IDrawToPrinter)oct;
idtp.Draw();
((IDrowToForm)oct).Draw();
if (oct is IDrawToPrinter dp)
{
dp.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 WhichInterface()
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("=> which interface");
Octagon oct = new Octagon();
((IDrawToForm)oct).Draw();
((IDrawToMemory)oct).Draw();
((IDrawToPrinter)oct).Draw();
}
static void Main(string[] args) {
Octagon oct = new Octagon();
IDrawToForm itForm = (IDrawToForm)oct;
IDrawToMemory itMemory = (IDrawToMemory)oct;
IDrawToPrinter itPrinter = (IDrawToPrinter)oct;
//oct.Draw(); ERROR, interfaces are implemented explicitely
itForm.Draw();
itMemory.Draw();
itPrinter.Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Octagon oct = new Octagon();
//oct.Draw();
IDrawToForm itfForm = (IDrawToForm)oct;
itfForm.Draw();
IDrawToMemory itfMemory = (IDrawToMemory)oct;
itfMemory.Draw();
IDrawToPrinter itfPrinter = (IDrawToPrinter)oct;
itfPrinter.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();
}
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)
{
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 ****");
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 *****\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();
}
static void Main(string[] args)
{
Octagon octagon = new Octagon();
IDrawForm itfForm = (IDrawForm)octagon;
itfForm.Draw();
IDrawMemory itfMemory = (IDrawMemory)octagon;
itfMemory.Draw();
IDrawToPrinter itfPrinter = (IDrawToPrinter)octagon;
itfPrinter.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();
}
Console.ReadLine();
}
static void Main( string[] args )
{
Console.WriteLine("***** Fun with Interface Name Clashes *****\n");
Octagon oct = new Octagon();
// 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)
((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 *****\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();
}
