private async void Login_Clicked(object sender, EventArgs e)
        {
            if (username.Text == "admin" && password.Text == "admin")
            {
                if (CrossConnectivity.Current.IsConnected)
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        username.IsVisible = false;
                        password.IsVisible = false;
                        login.IsVisible    = false;
                        activity.IsVisible = true;
                    });
                    ChatClientService.SetUp();
                    await ChatClientService.Connect();

                    ChatClientService.Counter++;
                    Navigation.PushAsync(new AdminChatListPage());
                }

                else
                {
                    DisplayAlert("ChatApp", "No Network Cnnection", "Close");
                }
            }

            else
            {
                DisplayAlert("ChatApp", "Invalid Login Credentials", "Close");
            }
        }
        private async void SendButton_ClickedAsync(object sender, EventArgs e)
        {
            await ChatClientService.Send(new Message
            {
                Id       = count,
                Owner    = "admin",
                Reciever = _name,
                Content  = messageEntry.Text
            });

            count++;
        }