private void SendButton_OnClick(object sender, RoutedEventArgs e)
{
if (string.IsNullOrEmpty(MessageArea.Text) || ActualUsers.SelectedIndex < 0)
{
return;
}
var text = MessageArea.Text;
var user = _usersList[ActualUsers.SelectedIndex];
_messages.Add(new Message
{
Date = DateTime.Now,
FirstConnectionId = null,
MessageText = text,
SecondConnectionId = user.ConnectionId
});
ActualMessages.ItemsSource = null;
ActualMessages.ItemsSource = _messages;
MessageArea.Text = "";
try
{
UpdateCipher(CipherTypeList.SelectedIndex);
_hubProxy.Invoke("SendMessage", _userConnection.ConnectionId, user.ConnectionId,
_cipher.Encryption(text), CipherTypeList.SelectedIndex).Wait();
}
catch
{
MessageBox.Show("user is offline");
}
}