// Define a method with the signature required to be able to subscribe to the event
// defined in the Connection class. Since the subscriber method is in a different
// class, it has to be public.
public void DisplayMessage(object source, MessageArrivedEventArgs e)
{
// The source object needs to be cast to access its custom properties, but since
// we are using a specific arguments class, we can access the message directly.
WriteLine($"Message arrived from: {((Connection)source).Name}");
WriteLine($"Message text: {e.Message}");
}
public void DisplayMessage(object source, MessageArrivedEventArgs e)
{
Console.WriteLine($"Message arrived from {((Connection)source).Name}");
Console.WriteLine($"Message Text: {e.Message}");
}
public void DisplayMessage(object source, MessageArrivedEventArgs e)
{
Console.WriteLine("Message arrived from: {0}",
((Connection)source).Name);
Console.WriteLine("Message Text: {0}", e.Message);
}
public void DisplayMessage(object source, MessageArrivedEventArgs e)
{
Console.WriteLine("Message arrived from: {0}",
((Connection)source).Name);
Console.WriteLine("Message Text: {0}", e.Message);
}
public void DisplayMessage(object source, MessageArrivedEventArgs e)
{
WriteLine($"Message arrived from: {(source as Connection)?.Name}");
WriteLine($"Message arrived: {e.Message}");
}
public void DisplayMessage(object source, MessageArrivedEventArgs e) // This is an Anonymous method, page 375
// variables created in anonymous methods may require a non-default deconstructor due to how long they can hang around as an OUTER VARIABLE.
{
WriteLine($"Message arrived from: {((Connection)source).Name}");
WriteLine($"Message Text: {e.Message}");
}
