private void btnPlay_Click(object sender, EventArgs e)
{
if (_current != null && !_current.IsStopped())
{
MessageBox.Show("Trình phát giọng nói vẫn đang chạy!", "Lỗi", MessageBoxButtons.OK,
MessageBoxIcon.Error);
return;
}
if (_current != null)
{
_current.Stop();
}
_current = chkVietnamese.Checked ? new Factory().MakeVNSpeech(txtContent.Text) : new Factory().MakeLocal(txtContent.Text);
_current.Speak();
}