// Drain the queue.
public void start()
{
if (m_employees == null)
{
return;
}
for (int i = 0; i < m_lengthQueue; i++)
{
// Pop an add employee request off the queue
string FirstName = m_msgQueue[i, 0];
string MiddleName = m_msgQueue[i, 1];
string LastName = m_msgQueue[i, 2];
string SSN = m_msgQueue[i, 3];
Console.WriteLine("Invoking delegate");
// Create the event arguments to pass to the methods
// subscribed to the event and then invoke event resulting
// in the callbacks methods being executed, namely
// Employees.this.addEmployee() and
// EmployeeQueueLogger.logAddRequest()
AddEmployeEventArgs args = new AddEmployeEventArgs(FirstName,
LastName, MiddleName, SSN);
OnAddEmployee(this, args);
}
}
// Called by event whenever a new add employee message appears
// in the message queue. Notice the signature matches that requried
// by System.Event
public void addEmployee(object sender, AddEmployeEventArgs e)
{
Console.WriteLine("In delegate, adding employee\r\n");
int index = m_employees.Length;
m_employees[index] = new Employee(e.FirstName, e.MiddleName,
e.LastName, e.SSN);
}
public void logAddRequest(object sender,
AddEmployeEventArgs e)
{
string name = e.FirstName + " " + e.MiddleName + " " +
e.LastName;
string text = "Adding Employee\n";
text += "EmployeeID: " + e.ID.ToString();
text += ", Name: " + name;
log(text);
}
// Called by event whenever a new add employee message appears
// in the message queue. Notice the signature matches that requried
// by System.Event
public void addEmployee(object sender, AddEmployeEventArgs e)
{
Console.WriteLine("In delegate, adding employee\r\n");
Employee employee;
if (e.IsSalaried == true)
{
employee = new SalariedEmployee(e.ID, e.FirstName, e.MiddleName,
e.LastName, e.SSN, e.PayRate);
}
else
{
employee = new HourlyEmployee(e.ID, e.FirstName, e.MiddleName,
e.LastName, e.SSN, e.PayRate);
}
m_employees.Add(employee);
}
// Drain the queue.
public void start()
{
if (m_employees == null)
{
return;
}
// Process all queue messages.
while (m_queue.moreMessages() == true)
{
try
{
EmployeeMessage msg = m_queue.getNextMessage();
if (msg.MessageType == MsgType.Add)
{
AddEmployeEventArgs args = new AddEmployeEventArgs(
(AddEmployeeMessage)msg);
OnAddEmployee(this, args);
}
else
{
HoursWorkedEventArgs args = new HoursWorkedEventArgs(
(PayrollMessage)msg);
OnHoursWorked(this, args);
}
}
catch (Exception e)
{
m_errLogger.logError(e);
}
}
// Now read one more message to see our custom exception
// thrown
try
{
EmployeeMessage msg = m_queue.getNextMessage();
}
catch (Exception e)
{
m_errLogger.logError(e);
}
}
// Called by event whenever a new add employee message appears
// in the message queue. Notice the signature matches that requried
// by System.Event
public void logAddRequest(object sender, AddEmployeEventArgs e)
{
string name = e.FirstName + " " + e.MiddleName + " " +
e.LastName;
FileStream stream = new FileStream(m_fileName,
FileMode.OpenOrCreate, FileAccess.ReadWrite);
StreamWriter writer = new StreamWriter(stream);
writer.BaseStream.Seek(0, SeekOrigin.End);
writer.Write("{0} {1} \n", DateTime.Now.ToLongTimeString(),
DateTime.Now.ToLongDateString());
writer.Write("Adding employee - Name: {0}, SSN: {1}",
name, e.SSN);
writer.Write("\n------------------------------------\n\n");
writer.Flush();
writer.Close();
}
