static void Main()
{
//3. invoke the delegate to invoke the method(s)
//calDelAdd.Invoke(12, 13);
//or
//calDelMulti(12, 13);
Downloader downloader = new Downloader();
//downloader.Download;
OperationDel downloadDel = new OperationDel(downloader.Download);
StatusDel successDel = new StatusDel(Program.NotifyOnSuccess);
StatusDel failureDel = new StatusDel(Program.NotifyOnFailure);
Operate(downloadDel, "http://www.google.com", successDel, failureDel);
//2. creat an instance of the delegate
Calculation calculation = new Calculation();
//InvokeCalculationMethods(calculation);
CalDel calDelAdd = new CalDel(calculation.Add);
InvokeCalculationMethods(calDelAdd);
CalDel calDelMulti = new CalDel(Calculation.Multiply);
InvokeCalculationMethods(calDelMulti);
}
static void Main(string[] args)
{
int val = 2;
OperationDel someDel = subtract2;
someDel += add1;
OperationDel myDel = someDel;
OperationDel mult2 = delegate(ref int a) { a *= 2; };
processAndShow(myDel, val); //1
myDel += mult2;
processAndShow(myDel, val); //2
myDel += subtract2;
processAndShow(myDel, val); //0
myDel -= subtract2;
processAndShow(myDel, val); //2
myDel += delegate(ref int a) { a *= 2; };
processAndShow(myDel, val); //4
myDel -= delegate(ref int a) { a *= 2; };
myDel -= mult2;
myDel -= subtract2;
processAndShow(myDel, val); //6
myDel -= mult2;
processAndShow(myDel, val); //6
}
static void Main(string[] args)
{
//singlecast Delagtes
//creating object of del
OperationDel del1 = new OperationDel(sum);
OperationDel del2 = Multiply;
//del1(3, 4); //invoke as next line
//del1.Invoke(8, 9);
//del2(4, 5);
//multicast Delagtes
rectDelegate rectdelObj = new rectDelegate(area);
rectdelObj += perimeter;
rectdelObj += traingleArea;
rectdelObj.Invoke(6.3, 4.2);
rectdelObj -= traingleArea;
rectdelObj.Invoke(6.3, 4.2);
//Anonymous methods
mydelgate print = delegate(int val) {
Console.WriteLine("Inside Anonymous method. Value: {0}", val);
};
print(100);
Console.WriteLine("Done");
Console.ReadLine();
}
private static void DoOperation(List <Token> tokens, ref int pos, OperationDel del, string content)
{
tokens[pos] = del(tokens, pos);
for (int i = 1; i <= operandsNumList[content]; i++)
{
tokens.RemoveAt(pos - i);
}
pos -= operandsNumList[content];
}
static void Operate(OperationDel operationDel, string url, StatusDel success, StatusDel failure)
{
string data = operationDel(url);
if (data != null && data != string.Empty)
{
success(data);
}
else
{
failure("could not get data...check the url");
}
}
public static void processAndShow(OperationDel del, int val)
{
del(ref val);
Console.Write(val + " ");
}
