public MainForm()
{
InitializeComponent();
client = new ClientService();
fileAttachmentService = new FileAttachmentService();
chat = client.GetGlobalChat();
isForAll = true;
client.Subscribe(UpdateChatInvoker);
fileAttachmentService.SubscribeHandler(UpdateFilesList);
}
private void UpdateChat()
{
lbChat.Items.Clear();
if (isForAll)
{
chat = client.GetGlobalChat();
}
else
{
try
{
chat = client.Conversations[(client.UserID, client.ReceiverID)];
