Are you looking to avoid reinventing the wheel? You can use the modular code below to help your project along.
Modular Code for .Net/Windows
Federal API SDK
.Net SDK to ease access to DOL's and other federal agencies' APIs. For a list of APIs that this SDK has been tested against, please see the wiki. For documentation and sample code, please visit http://developer.dol.gov.Link: https://github.com/USDepartmentofLabor/DotNet_DOLDataSDK
Source: Federal