Running a basic speech recognition program with windows 7 in c# VS 2010, it compiles, but it does not run -

i tried writing basic speech recognition using c# (winformsapp) in vs 2010 on windows 7 dell computer. able make work using basic examples microsoft (http://msdn.microsoft.com/en-us/magazine/cc163663.aspx#s5) , forums one. however, needed change computers , trying replicate on lenovo computer same specs. not work, in fact, speech recognition keeps interfering program running , when changed speechrecognitionengine still doesn't run. able compile no error, not see result, is, messagebox showing e.result.text.

my code below:

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.windows.forms; using system.speech.recognition; using system.threading;  namespace speechrecogtest {     public partial class form1 : form     {         speechrecognitionengine sr = new speechrecognitionengine();           public form1()         {             initializecomponent();         }          private void form1_load(object sender, eventargs e)         {             //create grammar             choices words = new choices();              words.add("hi");             words.add("no");             words.add("yes");              grammar wordslist = new grammar(new grammarbuilder(words));              wordslist.speechrecognized += new eventhandler<speechrecognizedeventargs>(rec_speechrecognized);             sr.loadgrammar(wordslist);          }          void rec_speechrecognized(object sender, recognitioneventargs e)         {             messagebox.show(e.result.text);         }     } } 

i appreciate help. pretty sure have installed sdks, including sapi 5.1, windows sdk v7.0 , v7.1, have included speech libraries both com , net, , built synthesizer works.

you loaded grammar, did ever call sr.recognizeasync(); ?

you have call either recognize() synchronous recognition or recognizeasync() perform recognition. have done neither.

assuming capturing audio soundcard, after grammar loaded, try:

sr.setinputtodefaultaudiodevice(); sr.recognizeasync(); 

to started .net speech, there article published few years ago @ http://msdn.microsoft.com/en-us/magazine/cc163663.aspx. best introductory article i’ve found far. little out of date, helfpul. (the appendresultkeyvalue method dropped after beta.)