A little helper class that helps shorten URL's from Bit.ly

UrlStortenerHelper.cs

using BitlyDotNET.Implementations;
using BitlyDotNET.Interfaces;

//NUGET:
//  Install-Package Bitly.Net

//Get username and apiKey from BIT.LY - you can get it under your account, settings > advanced and then Legacy API Key.
public class UrlShortenerHelper
{
    public static void Setup(string username, string apiKey)
    {
        Username = username;
        ApiKey = apiKey;
        Initialized = true;
    }

        
    public static string ShortenUrl(string url)
    {
        GuardInitialized();
        IBitlyService s = new BitlyService(Username, ApiKey);
        return s.Shorten(url);
    }

    private static void GuardInitialized()
    {
        if (!Initialized)
            throw new InvalidOperationException("You need to call setup first.");
    }

    public static bool Initialized { get; protected set; }
    protected static string ApiKey { get; set; }
    protected static string Username { get; set; }
}