I can't find System.speech

问题:

I am trying to do a project that uses the windows speech recognition libraries and I am trying to add a reference to System.speech since I am using:

SpeechSynthesizer synth = new SpeechSynthesizer();

However, I can't find System.speech in the .NET tab when I try to add a reference. I updated my .NET Framework and still can't find it. Is there a way to simply add it?

回答1:

Check your project type, and the version of the framework it's targeting.

SpeechSynthesizer exists in .NET 3.0, 3.5 and 4 - but only in v4 of the client profile. If your project targets anything else, that would explain why you're not seeing it. Otherwise, it should be there though...

回答2:

Check the reference assemblies directory typically found in : C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\

That should have a copy of System.Speech dll

回答3:

Click on Project in the menu bar then click on Add Reference. Click on the .NET tab in the window that appears. Search and select System.Speech. Click OK. It should work after that.

回答4:

Well, I've experienced this problem many months ago. That's how the fix worked out for me: Go to: C:\ProgramFiles\Reference Assembly\Microsoft** Search for: **System.Speech.dll Add it as a Reference from Project|Add Reference menu.

回答5:

I also had the same issue, to solve it use projects>add reference,
then add the following file C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\System.Speech.dll