NBusy SDK for .NET Framework 4.5.

You can getn an overview of NBusy project here http://www.soygul.com/projects/nbusy/

Although NBusy API is not publicly accessible yet, this source code can still be used as a nice reference for building [ASP.NET Web API] (http://www.asp.net/web-api) client library packages as it makes very good use of [HttpClient] (http://msdn.microsoft.com/en-us/library/system.net.http.httpclient.aspx) (System.Net.Http) and the new [async] (http://msdn.microsoft.com/en-us/library/vstudio/hh191443.aspx) features of .NET 4.5.

If you opt not to use this SDK, you can always access the API directly with simple HTTP requests as follows:

curl --request GET "https://www.nbusy.com/api/threads/1147?access_token=..."

See the documentation

Install-Package NBusy

var user = new NBusyClient("user-access-token");

var httpResponse = await user.Friends.GetFriends();
var friends = await httpResponse.Data;

foreach (var friend in friends)
{
	Console.WriteLine(friend.FullName);
}

See the release notes

Apache 2.0 License