Make your subject descriptive of your problem: "Help" is not very useful as we already know you need help - or you wouldn't be asking... Perhaps in this case "Fingerprint reading for WinForms" would be better?
Then, give us details: remember that we can't see your screen, access your HDD, or read your mind - so give us all the relevant information. In this case, the make and model of your reader would probably help, as well as what you have tried so far, and what problem you have found.
Just asking "can some one help me about the finger print code" makes it look like you have done nothing yourself and want us to do your job for you. This can annoy a lot of people and isn't likely to get you a good response. Show us you have tried, show us what help you need!
If you get an email telling you that you can catch Swine Flu from tinned pork then just delete it. It's Spam.