Function User_OnUpdate

templates/chat-console-cs/Program.cs:113–130

(EventContext ctx, User oldValue, User newValue)

/// Our `User.OnUpdate` callback:
/// print a notification about name and status changes.
void User_OnUpdate(EventContext ctx, User oldValue, User newValue)
{
    if (oldValue.Name != newValue.Name)
    {
        Console.WriteLine($"{UserNameOrIdentity(oldValue)} renamed to {newValue.Name}");
    }
    if (oldValue.Online != newValue.Online)
    {
        if (newValue.Online)
        {
            Console.WriteLine($"{UserNameOrIdentity(newValue)} connected.");
        }
        else
        {
            Console.WriteLine($"{UserNameOrIdentity(newValue)} disconnected.");
        }
    }
}

/// Our `Message.OnInsert` callback: print new messages.
void Message_OnInsert(EventContext ctx, Message insertedValue)