Xamarin.iOS - Get Special Folder Directory

IOHelper.cs

public class IOHelper
{
	public enum IosSpecialFolder
	{
		Documents,
		Library,
		Cache,
		Preferences,
		Tmp
	}

	// This method takes into account the check for the update in iOS 8.
	// https://developer.apple.com/library/ios/technotes/tn2406/_index.html
	public static string GetSpecialFolderPath(IosSpecialFolder specialFolder)
	{
		var documents = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);

		//is it above or equal to iOS 8?
		if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0)) 
		{
			documents = NSFileManager.DefaultManager.GetUrls (NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User) [0].Path;
		}

		switch (specialFolder) {
		case IosSpecialFolder.Documents:
			return documents;
		case IosSpecialFolder.Cache:
			return Path.Combine (documents, "..", "Library", "Caches");
		case IosSpecialFolder.Library:
			return Path.Combine (documents, "..", "Library");
		case IosSpecialFolder.Preferences:
			return Path.Combine (documents, "..", "Library", "Preferences");
		case IosSpecialFolder.Tmp:
			return Path.Combine (documents, "..", "tmp");
		default:
			return string.Empty;
		}
	}
}