A smart guy made a very good web service that gives you all the values you need from the BNR (National Bank of Romania) , you can use it like I did.
Include e web service reference in your Visual Studio project , then you use a code like this to get all the info you need ,for your project.`
Link to your web service here
The code to get the currency is down here:
Curs c = new Curs();
Have fun using it