void client_GroupChat(object sender, GroupChatEventArgs e)
 {
     if (e.Group == this)
     {
         Chatted.SafeInvoke(this, e);
     }
 }
 void client_UserChat(object sender, UserChatEventArgs e)
 {
     if (e.User == this)
     {
         Chatted.SafeInvoke(this, e);
     }
 }