static void Main()
{
int totalValue = 0;
int firstNumber;
int secondNumber;
Program p = new Program();
Calculator c = new Calculator();
// Get first numeric value.
firstNumber = p.GetNumericValue();
// Get second numeric value.
secondNumber = p.GetNumericValue();
//Create an instance of the delegate passing in
// the Add method of the Calculator class.
CalculateMethod cm = new CalculateMethod(c.Add);
// TODO: Call the CalculateMethod delegate, named "cm", asynchronously.
// TODO: Capture the return value into the variable "totalValue" (declared above)
// from the asynchronous call to the CalculateMethod, named "cm".
Console.WriteLine("\nTotal values: {0}",
totalValue);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
static void Main()
{
int firstNumber;
int secondNumber;
Program p = new Program();
Calculator c = new Calculator();
// Get first numeric value.
firstNumber = p.GetNumericValue();
// Get second numeric value.
secondNumber = p.GetNumericValue();
// Use delegate method to call the Add method.
CalculateMethod cm = new CalculateMethod(c.Add);
//TODO: Create an instance of the callback delegate passing
// in the callback method you implemented above.
// Call the Add method stored in the delegate asynchronously.
//TODO: Include the instance of the callback delegate in the
// call below.
IAsyncResult asyncResult = cm.BeginInvoke(firstNumber, secondNumber, null, null);
System.Threading.Thread.Sleep(2500);
Console.WriteLine("\nTotal value: {0}",
p.TotalValue);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
static void Main()
{
int totalValue = 0;
int firstNumber;
int secondNumber;
Program p = new Program();
Calculator c = new Calculator();
// Get first numeric value.
firstNumber = p.GetNumericValue();
// Get second numeric value.
secondNumber = p.GetNumericValue();
// Use delegate method to call the Add method.
CalculateMethod cm = new CalculateMethod(c.Add);
// Call the Add method asynchronously.
IAsyncResult asyncResult = cm.BeginInvoke(firstNumber, secondNumber, null, null);
Console.WriteLine("\nWaiting for the task to complete.");
//TODO: Use the WaitOne method of the IAsyncResult instance
// to force the main thread to wait until the secondary thread
// is done executing. Use a time out argument of 5000.
// If call completed on time, execute the two code lines below
// to display the results.
// If call did NOT complete on time, display a message and do not execute
// the two code lines below.
bool inTimeBool = asyncResult.AsyncWaitHandle.WaitOne(5000);
if (inTimeBool)
{
// Retrieve the return value from the Add method.
totalValue = cm.EndInvoke(asyncResult);
Console.WriteLine("\nTotal value: {0}",
totalValue);
}
else
{
Console.WriteLine("\n Call did NOT complete on time. No results. May need to stop application using Task Manager.");
}
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
static void Main()
{
int totalValue = 0;
int firstNumber;
int secondNumber;
Program p = new Program();
Calculator c = new Calculator();
// Get first numeric value.
firstNumber = p.GetNumericValue();
// Get second numeric value.
secondNumber = p.GetNumericValue();
// Use delegate method to call the Add method.
CalculateMethod cm = new CalculateMethod(c.Add);
// Call the Add method asynchronously.
IAsyncResult asyncResult = cm.BeginInvoke(firstNumber, secondNumber, null, null);
//TODO: Enclose the following code into a loop that is polling to
// determine when the asynchronous call is done. After
// including the two lines of code below in the loop, then
// uncomment them.
while (!asyncResult.IsCompleted)
{
System.Threading.Thread.Sleep(750);
Console.WriteLine("\nSeeing if the asynchronous call is done.");
}
// Retrieve the return value from the Add method.
totalValue = cm.EndInvoke(asyncResult);
Console.WriteLine("\nTotal value: {0}",
totalValue);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
static void Main()
{
int firstNumber;
int secondNumber;
Program p = new Program();
Calculator c = new Calculator();
// Get first numeric value.
firstNumber = p.GetNumericValue();
// Get second numeric value.
secondNumber = p.GetNumericValue();
// Use delegate method to call the Add method.
CalculateMethod cm = new CalculateMethod(c.Add);
//Create an instance of the callback delegate passing
// in the callback method.
AsyncCallback callbackMethod =
new AsyncCallback(p.ComputationComplete);
//Send the beginning time to the callback method.
DateTime beginTime = DateTime.Now;
// Call the Add method stored in the delegate asynchronously.
// TODO: 1. Include in the asychronous call below the instance of
// of the callback delegate (callbackMethod) and the
// variable (beginTime).
IAsyncResult asyncResult = cm.BeginInvoke(firstNumber, secondNumber, callbackMethod, beginTime);
System.Threading.Thread.Sleep(3000);
Console.WriteLine("\nTotal value: {0}",
p.TotalValue);
Console.Write("\nPress any key to end.");
Console.ReadLine();
}
