static void Main(string[] args)
{
MyDelegate d = new MyDelegate((x) => Console.WriteLine(x));
d("Hello World!");
var d2 = new MyDelegate2((x) => x + 0.1);
Console.WriteLine(d2(1));
var d3 = new MyDelegate3(calculate_square);
Console.WriteLine(d3.Invoke(3));
var d4 = new MyDelegate4(Method1);
var d5 = new MyDelegate4(Method2);
MyDelegate4 d6 = d4 + d5;
d6.Invoke();
Func <int, int> get_square = calculate_square;
Console.WriteLine(get_square(5));
Action myDelegateMethod1 = Method1;
myDelegateMethod1.Invoke();
Action myDelegateDemo = () =>
{
Console.WriteLine("hi");
};
myDelegateDemo.Invoke();
List <int> myIntList = new List <int> {
1, 3, 5, 99, 100, 200, 500, 999
};
var myBigNubmers = myIntList.Where(IsBigNumber);
Console.WriteLine(String.Join(",", myBigNubmers.Select(x => x.ToString())));
List <int> excludeList = Exclude(myIntList, IsBigNumber);
Console.WriteLine(String.Join(",", excludeList.Select(x => x.ToString())));
IEnumerable <Person> people = new List <Person>()
{
new Person("fang", "chen", new DateTime(1982, 7, 6)),
new Person("fang2", "chen2", new DateTime(1982, 7, 5)),
new Person("fang3", "chen3", new DateTime(1982, 7, 4))
};
var newOrderedPeople = people.OrderBy(GetSortFunction(SortOrder.BirthDate));
Console.WriteLine(String.Join("; ", newOrderedPeople.Select(p => p.ToString())));
}
public void Main()
{
MyDelegate4 dele;
dele = new MyDelegate4(func0);
dele += func1;
dele += func2;
dele();
Console.WriteLine();
dele -= func0;
dele -= func2;
dele();
Console.WriteLine();
}
public Delegates()
{
this.myDelegate = this.MyDelegateInstance;
//Anonymous function (method)
this.myDelegate = delegate(string param1) { };
//Lambda expressions
this.myDelegate = (string param1) => Console.WriteLine();
MyDelegate2 myDelegate2 = () => 1;
MyDelegate2 myDelegate21 = () =>
{
return(1);
};
Func1 <int, Delegates <string>, string> a = (age, delegatesInstance) => delegatesInstance(1);
string result = a(1, (myInt) => "");
Func1 <int, int, string> b;
//MyDelegate3
MyDelegate4 myd4 =
}
/*
* 문 형식의 람다식
* 람다식 내에서 메소드처럼 다양한 처리도 가능하다
* 그냥 메소드처럼 중괄호 내에 작성하면 된다
*
* delegate void MyDelegate(int a, int b);
*
* MyDelegate A = (a, b) =>
* {
* if(a > b)
* Console.WriteLine("{0}가 크다", a);
* else if(a < b)
* Console.WriteLine("{0}가 크다", b);
* else
* Console.WriteLine("{0}, {1}는 같다", a,b);
* };
*/
public void Expression()
{
MyDelegate4 Compare = (a, b) =>
{
if (a > b)
{
Console.WriteLine("{0}보다 {1}가 크다", b, a);
}
else if (a < b)
{
Console.WriteLine("{0}보다 {1}가 크다", a, b);
}
else
{
Console.WriteLine("{0}, {1}는 같다", a, b);
}
};
Compare(11, 22);
}
static void Main(string[] args)
{
MyDelegate del = SayHello;
del();
Test(del);
MyDelegate2 del2 = Test2;
del2("Saeed");
MyDelegate3 del3 = Test3;
del3(20);
MyDelegate4 del4 = Test4;
int result = del4(20, 4);
Console.WriteLine(result);
}
/// //////////////////////////////////////////////////////////////////////
static void Main(string[] args)
{
MyDelegate myDelegate = new MyDelegate(MyStaticClass.Method); //равносильно строке 28
MyDelegate m = MyStaticClass.Method; //равносильно строке 27
myDelegate.Invoke(); //равносильно строке 32
myDelegate(); //равносильно строке 31
MyDelegate2 myDelegate2 = new MyDelegate2(MyStaticClass.Method2);
myDelegate2("Alex");
MyClass myClass = new MyClass();
MyDelegate3 deleg = new MyDelegate3(MyClass.Method3);
deleg("Roma");
MyDelegate d0;//назвал сокращенно делегат d
MyDelegate d1 = new MyDelegate(Method1);
MyDelegate d2 = new MyDelegate(Method2);
MyDelegate d3 = new MyDelegate(Method3);
d0 = d1 + d2 + d3;
d0();
Console.WriteLine("Enter 1 - 7");
string choise = Console.ReadLine();
switch (choise)
{
case "1":
d1.Invoke();
break;
case "2":
d2.Invoke();
break;
case "3":
d3.Invoke();
break;
case "4":
MyDelegate d4 = d0 - d1;
d4();
break;
case "5":
MyDelegate d5 = d0 - d2;
d5();
break;
case "6":
MyDelegate d6 = d0 - d3;
d6();
break;
case "7":
d0();
break;
}
MyDelegate d10 = new MyDelegate(delegate { Console.WriteLine("Hello!!!"); Console.WriteLine("Hello!!!!!!!!!!!!!"); });//равносильно строкам 115-119
d10();
MyDelegate d11 = delegate //равносильно строке 112
{ //равносильно строке 112
Console.WriteLine("Hello!!!"); //равносильно строке 112
Console.WriteLine("Hello!!!!!!!!!!!!!"); //равносильно строке 112
}; //равносильно строке 112
d11();
int sum1 = 1, sum2 = 2, sum = 0;
MyDelegate4 d31 = delegate(int a, int b) { return(a + b); };
M1();
}
static void Main(string[] args)
{
IMethods methods = new MyClass();
MyDelegate1 myDelegate1 = new MyDelegate1(methods.Method1);
Console.WriteLine(myDelegate1.Invoke());
Console.WriteLine(new string('-', 25));
MyDelegate1 myDelegate1_2 = methods.Method1;
MyDelegate1 mydel = myDelegate1 + myDelegate1_2 + delegate { return("Anonymous Method"); };
Console.WriteLine("myDelegate1 + myDelegate2 + Anonymous Method");
Console.WriteLine(mydel);
Console.WriteLine(new string('-', 25));
MyDelegate4 myDelegate4 = null;
int[] @params = { 1, 2, 3, 4, 5 };
myDelegate4 = delegate(int[] a) { return(a); };
foreach (string item in methods.Method2(myDelegate4(1, 2, 3, 4, 5, 6)))
{
Console.WriteLine(item);
}
Console.WriteLine(new string('-', 25));
MyDelegate2 myDelegate2 = delegate(int a) { Console.WriteLine("Method Param is delegate."); return(a * 2); };
Console.WriteLine(methods.Method3(myDelegate2(5)));
Console.WriteLine(new string('-', 25));
Console.WriteLine("Lambda operator.");
myDelegate2 = (a) => { return(a * 2); };
Console.WriteLine(methods.Method3(myDelegate2(5)));
Console.WriteLine(new string('-', 25));
Console.WriteLine("Lambda Expression.");
myDelegate2 = a => a * 2;
Console.WriteLine(methods.Method3(myDelegate2(5)));
Console.WriteLine(new string('-', 25));
MyDelegate3 del = () => 6;
Console.WriteLine("Lambda Expression.");
Console.WriteLine(del + "\nMyDelegate3 => " + del());
Console.WriteLine(new string('-', 25));
Del1 delegate1 = new Del1(Method2);
Del2 delegate2 = delegate1();
Console.WriteLine("Del2.Method2() => Method1() => " + delegate2());
Console.ReadKey();
}
static void Main(string[] args)
{
MyDelegate del = new MyDelegate(MethodA);
del("This is first way");
MyDelegate del1 = MethodA; //second way
del("This is delegate invoking function");
MyDelegate del3 = MethodA;
del3.Invoke("This is another way");
MyDelegate2 del2 = new MyDelegate2(MethodA1);
del2(5, 6);
MyDelegate del4 = ClassA.MethodA;
del4("Hello World");
MyDelegate del5 = ClassB.MethodB;
del5("Hello World");
InvokeDelegate(del4); //another method for Invoking delegte
InvokeDelegate(del5);
MyDelegate delCombine = del4 + del5; //combine del4 and del5 they executing one by one
delCombine("Hello Both Combination");
delCombine += del1; //add del1 also
delCombine.Invoke("This is by Multicasting");
delCombine -= del4; //removing del4
delCombine("Remove Class A ");
delCombine = delCombine - del1 - del5; //Removing del1 and del5
if (delCombine != null)
{
delCombine.Invoke("Remove Method Del1 also");
}
else
{
Console.WriteLine("Delegate is Null");
}
//del = (string msg) => Console.WriteLine("Called lambda expression: " + msg);
//del("Hello World");
//Multicasting of Delegates
MyDelegate3 delegate_int1 = Class1.Method1;
MyDelegate3 delegate_int2 = Class2.Method2;
MyDelegate3 delegate_int3 = delegate_int1 + delegate_int2; //here also as assignment bcause it returns value
Console.WriteLine(delegate_int3()); //print 200
MyDelegate4 Delegate4del = Class1.Method12;
int a = Convert.ToInt32(Delegate4del(300));
Console.WriteLine(a);
MyDelegate4 Delegate4del1 = Class2.Method22;
int b = Convert.ToInt32(Delegate4del1(400));
Console.WriteLine(b);
InvokeDelegate4(Delegate4del1); //by using Invoke method created by own
// Delegate4del1 += Delegate4del; //Here it work as assignment
int b1 = Delegate4del1(100);
Console.WriteLine(b1 + "This is Combine but work as assignment");
Delegate4del = Delegate4del1; // assigning the delegate
InvokeDelegate4(Delegate4del1);
Console.ReadKey();
}
static void InvokeDelegate4(MyDelegate4 del) //it contain Parameter of MyDelegate4
{
int value = del(500);
Console.WriteLine("This is value after Invoking {0}", value);
}