static void Main(string[] args)
{
// Create a basic delegate that squares a number
MyDelegate foo = (x) => x * x;
Console.WriteLine("The result of foo is: {0}", foo(5));
// Dynamically change the delegate to something else
foo = (x) => x * 10;
Console.WriteLine("The result of bar is: {0}", foo(5));
// Create a delegate that takes multiple arguments
MyDelegate2 bar = (x, y) => {
Console.WriteLine("The two-arg lambda: {1}, {0}", x * 10, y);
};
bar(25, "Some string");
// Define an expression delegate
ExprDelegate baz = (x) => x > 10;
Console.WriteLine("Calling baz with 5: {0}", baz(5));
Console.WriteLine("Calling bax with 15: {0}", baz(15));
// Keep the Command Line window open
Console.WriteLine("\nPress Enter Key to Continue...");
Console.ReadLine();
}
public void DoIt()
{
MyDelegate foo = (x) => x * x;
Console.WriteLine($"The result of foo is: {foo(5)}");
// Dynamically change the delegate to something else
foo = (x) => x * 10;
Console.WriteLine($"The result of bar is: {foo(5)}");
// Create a delegate that takes multiple arguments
MyDelegate2 bar = (x, y) => {
Console.WriteLine($"The two-arg lambda: {x*10}, {y}");
};
bar(25, "Some string");
// Define an expression delegate
ExprDelegate baz = (x) => x > 10;
Console.WriteLine("Calling baz with 5: {0}", baz(5));
Console.WriteLine("Calling bax with 15: {0}", baz(15));
Console.WriteLine("\nPress Enter to Continue...");
Console.ReadLine();
}
static void Main(string[] args)
{
MyDelegate foo = (x) => x * x;
Console.WriteLine("The result of foo is: {0}", foo(5));
// Dynamically change the delegate to something else
foo = (x) => x * 10;
Console.WriteLine("The result of bar is: {0}", foo(5));
// Create a delegate that takes multiple arguments
MyDelegate2 bar = (x, y) =>
{
Console.WriteLine("The two-arg lambda: {1}, {0}", x * 10, y);
};
bar(25, "Some String");
// Define an expression delegate
ExprDelegate baz = (x) => x > 10;
Console.WriteLine("Calling baz with 5: {0}", baz(5));
Console.WriteLine("Calling baz with 15: {0}", baz(15));
Console.WriteLine("\nPress Enter to continue...");
Console.WriteLine();
}
public static void Test1()
{
MyDelegate foo = (x) => x * x;
Console.WriteLine("Result {0}", foo(5));
foo = (x) => x * 10;
Console.WriteLine("Result {0}", foo(5));
MyDelegate2 bar = (x, y) =>
{
Console.WriteLine("Arguments x:{0} and y:{1}", x, y);
};
bar(25, "Some string");
ExprDelegate baz = (x) => x > 10;
Console.WriteLine("Baz with 5: {0}", baz(5));
Console.WriteLine("Baz with 10: {0}", baz(15));
}
delegate int ExprDelegate(int a, int b); // 리턴이 있는 무명 메소드
private void Form1_Load(object sender, EventArgs e)
{
// 무명메소드
// 기본형태는 delegate *** (int p) {본문}; 이다.
// 이름이 없어서, 무명메소드이다. 기본적으로 delegate를 앞에 쓰고 마디를 만든 다음 ;를 찍어 완성한다.
// 무명메소드는 delegate 타입에 무명메소드 자체를 할당할 수 있다.
RunDelegate r = delegate(int p) { MessageBox.Show(p.ToString()); };
r(123); // 123부분이 int p로들어가서 메세지 박스로 가서 123이 출력되게 된다.
ExprDelegate expr = delegate(int a, int b)
{
return(2 * a + b);
};
int result = expr(1, 2);
button1.Click += Button1_Click; // 아래 적힌대로, inline 무명메소드를 사용해보자.
button2.Click += delegate(object s, EventArgs ae)
{
MessageBox.Show("Button 2");
};
}
static void Main(string[] args)
{
MyDelegate foo = (x) => x * x;
Console.WriteLine("The result of foo is {0}", foo(5));
foo = (x) => x * 10;
Console.WriteLine("The result of bar is {0}", foo(5));
MyDelegate2 bar = (x, y) =>
{
Console.WriteLine("The two arg lambda: {1} {0}", x * 10, y);
};
bar(25, "some string");
ExprDelegate baz = (x) => x > 10;
Console.WriteLine("Calling baz with 5 {0}", baz(5));
Console.WriteLine("Calling baz with 15 {0}", baz(15));
Console.ReadKey();
}