如何将进度条连接到语音合成器?

我想在我的应用程序中连接一个进度条到我的语音合成器(以显示通过它读取文本的距离)。

我的语音合成器代码的主要组件如下:

    private void button1_Click(object sender, EventArgs e)//Start button
        {
            reader.Dispose();
            if (Basic_Word_Processor.Instance.richTextBoxPrintCtrl1.Text != "")
            {
                reader = new SpeechSynthesizer();
                reader.SpeakAsync(Basic_Word_Processor.Instance.richTextBoxPrintCtrl1.Text);
                button2.Enabled = true;
                button4.Enabled = true;
                reader.SpeakCompleted += new EventHandler<SpeakCompletedEventArgs>(reader_SpeakCompleted);
            }
            else
            {
                MessageBox.Show("Please insert text before launching Text to Speech.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
private void button2_Click(object sender, EventArgs e)//Pause button
        {
            if (reader != null)
            {
                if (reader.State == SynthesizerState.Speaking)
                {
                    reader.Pause();
                    button3.Enabled = true;
                }
            }
 private void button3_Click(object sender, EventArgs e)//Resume button
        {
            if (reader != null)
            {
                if (reader.State == SynthesizerState.Paused)
                {
                    reader.Resume();
                }
                button3.Enabled = false;
            }
            }

        private void button4_Click(object sender, EventArgs e)//Stop button
        {
            if (reader != null)
            {
                reader.Dispose();
                button2.Enabled = false;
                button3.Enabled = false;
                button4.Enabled = false;
            }
        }

我想将此代码连接到进度条，以便它显示语音合成器的当前状态(并在用户暂停/停止进度条时暂停/停止)。这可能吗?我从来没有正确地使用过进度条，所以我需要一些帮助。

谢谢。

reader.SpeakProgress += reader_SpeakProgress;

private void reader_SpeakProgress(Object sender, SpeakProgressEventArgs e)
{
    ProgressBar.Value = (Int32)((e.CharacterPosition + e.CharacterCount - 82F) / richTextBoxPrintCtrl1.Text.Length * 100);
}