static void Main(string[] args)
{
// about Func<> and Action<>
Sum(10, 20);
Console.WriteLine($"Diff of values : {Diff(20, 10)}");
int diff = Diff(20, 10);
Console.WriteLine($"MPY of values : {MPY(20, 10)}");
Console.WriteLine($"DIV of values : {DIV(20, 10)}");
Console.WriteLine("\n Calling using Delegate");
DelegateSum delSum = Sum; // this assigns the reference of Sum to delSum
Func <int, int, int> delDiff2 = Diff;
//Func<int,int, string> FuncDel = SomeMethod1;
//Func<int, string> FuncDel2 = SomeMethod2;
//Func<double, double, string> FuncDel3 = SomeMethod3;
//The last First and rest of state ments except last one is conditional statements and the last one is return value.
//Action <t>delegate is to refer void method
//Action(<int, int, int, string> funDel = SomeMethod4;
//Action(<int, int, string> funDel = SomeMethod5;
//Action(<double, double, string> funDel = SomeMethod6;
DelegateDiff delDiff = Diff;
Console.WriteLine($"Using delegate Diff of values: {delDiff(20, 10)}");
DelegateMPY delMpy = MPY;
Console.WriteLine($"Using delegate MPY of values : {MPY(20, 10)}");
//Console.WriteLine(delSum);
//Call using delegate
delSum(100, 200); // this is method call to SUm using delegate
delSum(50, 30); // this is method call to SUm using delegate
}//end main
public static void Main()
{
DelegateSum delegateSum = (a, b) =>
{
return(a + b);
};
DelegateMult delegateMult = (a, b) =>
{
return(a * b);
};
double sum = delegateSum(8.76, 10.86);
double mult = delegateMult(8.76, 10.86);
Console.WriteLine("Sum is: " + sum);
Console.WriteLine("Multiplication is: " + mult);
Console.ReadLine();
}
public static void Main()
{
DelegateClass obj = new DelegateClass();
//Step2: Instantiating the delegate, means create object of delegate and pass the method name which it will reference to.
//we can pass any method which is matching the signature of delegate.
DelegateSum delegateSum = new DelegateSum(obj.AddNum);
DelegateMult delegateMult = new DelegateMult(obj.MultNum);
//Step-3: Now call the delegate by passing required parameter values, so that internally the method which is bound with the delegate gets executed.
double sum = delegateSum(8.76, 10.86);
double mult = delegateMult(8.76, 10.86);
// we can call the delegate by using Invoke method===
sum = delegateSum.Invoke(8.76, 10.86);
mult = delegateMult.Invoke(8.76, 10.86);
//=============================================
Console.WriteLine("Sum is: " + sum);
Console.WriteLine("Multiplication is: " + mult);
Console.ReadLine();
}
