private void txtMessage_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == '\r')
{
btnSend_Click(null, null);
e.Handled = true;
lastTypingNotification = DateTime.UtcNow.AddSeconds(-10);
}
else
{
DateTime current = DateTime.UtcNow;
if ((current - lastTypingNotification).TotalSeconds > 5)
{
lastTypingNotification = current;
_chat.SendTypingNotification();
}
}
}