private void button2_Click(object sender, EventArgs e) { if (is_playinig_) { if (button2.Text == "暂停") { vlc_player_.Pause(); timer1.Stop(); button2.Text = "播放"; } else { vlc_player_.Play(); timer1.Start(); button2.Text = "暂停"; } } else { button2.Text = "播放"; } }