public event EventHandler <ProcessEventArgs> ProcessCompleted; // event
public void StartProcess()
{
var data = new ProcessEventArgs();
try {
Console.WriteLine("Process Started!");
data.IsSuccessful = true;
data.CompletionTime = DateTime.Now;
// some code here..
// uncomment these 2 lines to trigger a failure
//List<string> nullList = null;
//nullList.Add("failllll");
OnProcessCompleted(data);
} catch (Exception e) {
data.IsSuccessful = false;
data.CompletionTime = DateTime.Now;
OnProcessCompleted(data);
}
}
protected virtual void OnProcessCompleted(ProcessEventArgs e) //protected virtual method
{
// if ProcessCompleted is not null then call delegate
ProcessCompleted?.Invoke(this, e);
}