.
System.Collections.Generic. :
List<T>( )
Dictionary<K,V>( /)
Queue<T>( )
SortedDictionary <K,V>(
/)
Stack<T>( )
LinkedList<T>( )
12
,
( ) , .
:
,
( )
( )
,
, .
,
, .
delegate.
, ,
. : , ,
(, )
public delegate int BinaryOp (int x, int y);
//,
public class SimpleMath
{
public int Add(int x, int y)
{return x+y;}
public int Sub(int x, int y)
{return x-y}
public static int Square(int x, int y)
{return a*a;}
}
class Program
{
static void Main(string[]args)
{
SimpleMath m = new SimpleMath();
BinaryOp b = new BinaryOp(m.add);
Console.WriteLine(b(10,10));
}
}
,
.
, + +=, .
=.
public delegate int BinaryOp (int x, int y);
public class SimpleMath
{
public int Add(int x, int y)
{return x+y;}
public int Sub(int x, int y)
{return x-y}
public static int Square(int x, int y)
{return a*a;}
}
static void Main()
{
BinaryOp a, b, c, d;
a = Add;
b = Sub;
c = a+b;
d = ca;
}
13
.
event,
:
public class SenderOfEvents
{
public delegate retval AssociatedDelegate(args);
public event AssociatedDelegate NameOfEvent;
...
}
, :
{
public delegate void MyEventHandler();//,
|
|
|
class TestEvent
{
public event MyEventHandler Triggerlt;//
// MyEventHandler
public void Trigger()//,
{
Triggerlt();
}
public void MyMethod1()
{
Sistem.Console.WriteLine("Hello!");
}
public void MyMethod2()
{
Sistem.Console.WriteLine("Hello again!");
}
public void MyMethod3()
{
Sistem.Console.WriteLine("Good-bye!");
}
static void Main()
{
TestEvent myEvent = new TestEvent();
myEvent.Triggerlt += newMyEventHandler(myEvent.MyMethod1);
myEvent.Triggerlt += newMyEventHandler(myEvent.MyMethod2);
myEvent.Triggerlt += newMyEventHandler(myEvent.MyMethod3);
// 3
myEvent.Trigger();//
myEvent.Triggerlt -= newMyEventHandler(myEvent.MyMethod2);
myEvent.Trigger();
}
}
}
,
, , void
object eventArgs:
{
public delegate void EventHandler(object sender, EventArgs e);
...
class Car
{
public event EventHandler CarEvent;
void SomeMethod
{
if (CarEvent!=null)
{
CarEvent(this, New EventArgs());
}
}
public static void ForCarMet(object sender, EventArgs e)
{
Car c = (car).sender;
if(c.CarSpeed > 60)
{
Console.Write("!!!");
}
}
}
public class EventArgs
{
public static readonly
Sistem.EventArgs Empty();
public EventArgs()
{}
}
}
-
, - EventArgs.
,
EventHandler<T>(object sendler, T e):
{
class Car
{
public event EventHandler<CarEvents> CarExploded;
public event EventHandler<CarEvents> CarAboutToFollow;
...
void SpeedUp(int delta)
{
if(CarIsDead && CarExploded!=null)
{
CarExploded(this, new CarEvents(" ..."));
}
}
}
}
14
C# () :
: +, -,!, ~, ++, --, true, false
: +, -, *, /, %, &, |, ^, <<, >>, = =,!=, >, >, >=, <=
+
public static ComplexNumber operator + (ComplexNumber a, ComplexNumber b)
{
return new ComplexNumber(a+b-3);
}
(sbyte, int, float...)
( )
,
Static void Main()
{
int a = 123;
long b = a; //
int c = (int)b; //
}
-
.
:
{
class Base { }
class Derived: Base { }
class Program
{
static void Main(string[] args)
{
Base a;
a = new Derived(); //
Derived b = (Derived)a; //
|
|
|
//
}
}
}
: Rectangle Square:
Rectangle rect;
rect.Width = 3;
rect.Height = 10;
Square sq = (Square)rect;
15
(generic)
.
(ArrayList, Hashtable, Queue, SortedList, Stack):
1.
2.
3.
,
Sistem. Collectiions. Generic. ,
,
(List<>, Dictionary<K,V>, Queue<T>, SortedDictionary<K,V>,
Stack<T>, LinkedList<T>...)
List<> -
Dictionary<K,V> - /
Queue<T> -
SortedDictionary<K,V> -
/
Stack<T> -
LinkedList<T> -
:
Static void Main(string[] args)
{
// ,
List<int> myInts = new List<int>();
//
myInts.Add(5);
int x = 10;
myInts.Add(x);
// , Employee
List<Employee> otdel =new List<Employee>();
otdel.Add(new Manager());
otdel.Add(new SalesPerson());
Console.WriteLine( {0} , otdel.count);
}
17
.Net , ,
Common Language Run-time (CLR).
, .
.
.
1. , ,
2. :
< >.< >.< >.< >
3. ,
, ,
, , ,
4.
.
CLR ,
( ),
.
( )
, , ,
. ,
, , ,
.
, ( ),
GAC(Global Assembly Cache) .
. GAC
,
. .
, , X:
<configuration>
<runtime>
<assemblyBinding xmlns=urn:schemas-
microsoft-com:asm.vl>
<probing privatePath=X/>
|
|
|
</assemblyBinding>
</runtime>
</configuration>
