在阅读（SpeechSynthesizer）Textbox / RichtextBox中的特定单词时，如何突出显示文本？

Question

SpeechSynthesizer reader = new SpeechSynthesizer();

reader.SpeakAsync(richTextBox1.SelectedText);

// highlight a text while reading (SpeechSynthesizer) a specific word in richTextBox1.

Answer 1

The SpeechSynthesizer raises different Events while progressing.

The one for words is SpeechSynthesizer.SpeakProgress . Hook up an eventlistener and Color the text in your TextBox inside of that.

Answer 2

You should use SpeakProgress event which raises for each new word was pronounced

The SpeechSynthesizer raises this event for each new word that it speaks in a prompt using any of the Speak, SpeakAsync, SpeakSsml, or SpeakSsmlAsync methods. For an example and more information about data associated with the event, see SpeakProgressEventArgs. MSDN

There is also a good example from Microsoft hot to use this event to check what text pronounced: MSDN