Question

I am using an external class to open up a connection to a remote application. This class receives the data from the remote application which is handled via a handler.

To this handler I have added several checks to parse the data in separate methods. However I am now stuck at the point where I need to access the object again which triggered the event to call a method on it. I am sure this is a pretty basic question but I am just starting with OOP.

public static void Main(string[] args) {
    IBattleNET b = new BattlEyeClient(loginCredentials);
    b.MessageReceivedEvent += HandleMessage;   
    b.Connect();
} 

private static void HandleMessage(BattlEyeMessageEventArgs args) {
    //call a method to analyze data parse
    PlayerList(args.Message);
}

private static void parsePlayerList(string playerList) { 
    // At this point I need to access the object b again to to call a method
}

Answer 1

Modify the handler to pass over the object:

b.MessageRecievedEvent += (e) => HandleMessage(b, e);
....
private static void HandleMessage(IBattleNet b, BattleMessageEventArgs args) {
....

The lambda expression stores the args as ‘e’, then calls HandleMessage by passing it both the object and ‘e’.

The convention Pickles presented is better practice, however, if you have access to and can change the event itself inside of IBattleNET.