How to set path for run selenium testing using Visual Studio 2015 community edition

I'm using selenium tool newly, I tried to write one console application program for basic firefox browser open test I write my code below, When I try to run this application I get error. like, An unhandled exception of type 'System.IO.IOException' occurred in mscorlib.dll

Additional information: The process cannot access the file:"File Path"

IWebDriver dr = new FirefoxDriver(); dr.Navigate().GoToUrl("http://www.google.com");

Anyone help me out. Thanks, Uthiraraj.