Taking input from MIC and converting into text

I'am making a windows form DICTIONARY application in iam taking input from user as a audio than converting it into a text word... Then application show the开发者_Python百科 meaning of the word(given in audio form)

i want a code which would help me in converting the audio file in text file

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This could help you: http://www.c-sharpcorner.com/uploadfile/ssrinivas/speeechrecognitionusingcsharp11222005054918am/speeechrecognitionusingcsharp.aspx

Next time, google things up :S