//CustomEvent
void CustomEvent(object sender, StockNotificationEventArgs e)
{
//lock this code block
lock (thisLock) {
string stockFormat = String.Format("{0} \t {1} \t {2} \t {3}", name, e.Name, e.CurrentValue, e.NumOfChanges);
Console.WriteLine("{0} \t {1} \t {2} \t {3}", name, e.Name, e.CurrentValue, e.NumOfChanges);
StringBuilder sb = new StringBuilder();
DateTime now = DateTime.Now;
sb.Append("Written on ->" + now.ToString() + "\t");
sb.Append(stockFormat);
try {
File.AppendAllText(AppDomain.CurrentDomain.BaseDirectory + @"\" + "output.txt", sb.ToString() + Environment.NewLine);
}
catch (IOException) { //do nothing
}
}//unlock code block
}
//start event
protected virtual void startEvent(StockNotificationEventArgs e)
{
//declare event handler
StockNotificationHandler handler = StockEvent;
//check event handler
if (handler != null)
{
handler(this, e);
}
}
//UpdateStock = currentValue + rand(maxChange)
public void updateStock()
{
Random rand = new Random();
//update currentValue with +/- random number < maxChange
currentValue += rand.Next(-(maxChange), maxChange);
//Calculate diffValue between current and initalValue
int diffValue = Math.Abs(currentValue - initialValue);
//update number of change that take place on this stock
numOfChange++;
//throw event if diffValue is larger than threshold
if(diffValue >= threshold)
{
StockNotificationEventArgs args = new StockNotificationEventArgs(name, initialValue, currentValue, diffValue, numOfChange);
startEvent(args);
}
}
