protected virtual void OnUnaryCalculation(ICalculation calculation)
{
CalculationComplete?.Invoke(this, new CalcEventArgs()
{
Calculation = calculation
});
}
// This method is called with delegates for
// both the collection of calculate methods and the callback method.
public void CallCalculator(CalculateMethod cm, CalculationComplete cc)
{
// TODO: Call the multicast CalculateMethod delegate.
cm();
// TODO: Call the callback method.
cc();
}
// This method is called with delegates for
// both the calculate method and the callback method.
public void CallCalculator(CalculateMethod cm, CalculationComplete cc)
{
// Get the input value.
int inputInt = GetNumericValue();
// Call the calculate method.
// TODO: Call the CalculateMethod delegate to call the
// calculate method that is stored in it passing in the
// value in the variable inputInt.
// Call the callback method.
// TODO: Call the CalculationComplete delegate to call
// the callback method that is stored in it.
}
// This method is called with delegates for
// both the collection of calculate methods and the callback method.
public void CallCalculator(CalculateMethod cm, CalculationComplete cc)
{
Console.WriteLine("Starting total is: {0}", TotalValues);
// TODO: Code a foreach loop to loop through the multicast
// CalculateMethod delegate to execute one method at a
// time to capture the return value, which is the name of
// the calculate method that was called:
// Include the commented block of code below in the loop.
// Uncomment the block after inserting it into the loop.
// Give the reference name "m" to each instance of the
// delegate in the foreach loop.
//Console.WriteLine("\nResult after {0}ing {1} is {2}.",
// m(), values[0], TotalValues);
//values.RemoveAt(0);
// Call the callback method.
cc();
}
static void Main()
{
string option = "";
CalculateMethod cm = null; // Delegate for calculation methods.
Program p = new Program();
Calculator c = new Calculator();
// Declare an anonymous method.
DisplayMenu menu = delegate
{
Console.WriteLine("\nCalculator for Add and Subtract");
Console.WriteLine("\n\t1. Add");
Console.WriteLine("\t2. Subtract");
Console.WriteLine("\tX. Exit Calculator");
Console.Write("\nEnter option: ");
};
// Declare the CalculationComplete delegate and load it with
// the CalculationCompleteCallback method.
CalculationComplete cc = new CalculationComplete(p.CalculationCompleteCallback);
while (option.ToUpper() != "X")
{
// Call the anonymous method.
menu();
// Get the option from the user.
option = Console.ReadLine();
Console.WriteLine();
switch (option.ToUpper())
{
case "1":
// Load multicast delegate to call Add method.
// TODO: Include the Add method in the multicast
// CalculateMethod delegate.
// Loads a numeric value into a collection to be used
// by the method when it is executed.
c.values.Add(c.GetNumericValue());
break;
case "2":
// Load delegate to call Subtract method.
// TODO: Include the Subtract method in the multicast
// CalculateMethod delegate.
// Loads a numeric value into a collection to be used
// by the method when it is executed.
c.values.Add(c.GetNumericValue());
break;
case "X":
break;
default:
Console.WriteLine("Menu option {0} is not valid.",
option);
break;
}
}
// Call the method in the Calculator class
// to pass in the two loaded delegates for the calculate
// methods and the callback method. Do this ONLY if
// the multicast CalculateMethod delegate has any calculate methods
// loaded into it.
if (cm == null)
{
Console.WriteLine("\nNo calculations were requested.");
}
else
{
c.CallCalculator(cm, cc);
}
Console.WriteLine("\nTotal values: {0}",
c.TotalValues);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
static void Main()
{
string option = "";
// TODO: Take note that the CalculateMethod delegate is being
// declared here. It will be loaded in the TODOs below. Its
// reference name is "cm".
CalculateMethod cm;
Program p = new Program();
Calculator c = new Calculator();
// Declare an anonymous method.
DisplayMenu menu = delegate
{
Console.WriteLine("\nCalculator for Add and Subtract");
Console.WriteLine("\n\t1. Add");
Console.WriteLine("\t2. Subtract");
Console.WriteLine("\tX. Exit Calculator");
Console.Write("\nEnter option: ");
};
// TODO: Declare the CalculationComplete delegate and load it with
// the CalculationCompleteCallback method. Give the reference
// name of the delegate "cc".
CalculationComplete cc = new CalculationComplete(p.CalculationCompleteCallback);
while (option.ToUpper() != "X")
{
// Call the anonymous method.
menu();
// Get the option from the user.
option = Console.ReadLine();
Console.WriteLine();
switch (option.ToUpper())
{
case "1":
// Load delegate method to call Add method.
// TODO: Load the already declared CalculateMethod delegate (name is cm)
// with the Add method in the Calculator class.
cm = new CalculateMethod(c.Add);
// TODO: Take note that the CallCalculator method in the Calculator class is being
// called here to pass in the two loaded delegates for the calculate
// method and the callback method.
c.CallCalculator(cm, cc);
break;
case "2":
// Load delegate method to call Subtract method.
// TODO: Load the already declared CalculateMethod delegate (name is cm)
// with the Subtract method in the Calculator class.
cm = new CalculateMethod(c.Subtract);
// TODO: Take note that the CallCalculator method in the Calculator class is being
// called here to pass in the two loaded delegates for the calculate
// method and the callback method.
c.CallCalculator(cm, cc);
break;
case "X":
break;
default:
Console.WriteLine("Menu option {0} is not valid.",
option);
break;
}
}
Console.WriteLine("\nTotal values: {0}",
c.TotalValues);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
