/// <summary>
/// Determine if the specified string is blank, where blank is defined 
/// as null, empty or containing only whitespace characters.
/// </summary>
/// <param name="value">string to be evaluated</param>
/// <returns>
/// true if the value is null, empty or contains only 
/// whitespace characters; otherwise false
/// </returns>
static bool IsNullOrWhiteSpace(string value)

var _Offspring = _Context.Users   
        .SelectMany(x => x.Offspring).Distinct();

class Program
{
    static void Main(string[] args)
    {
        var instance = new Program();
        var cat = new AssemblyCatalog(typeof(Program).Assembly);
        var container = new CompositionContainer(cat);
        container.ComposeParts(instance);
 
        foreach (var plug in instance.Plugins)

using System;
using System.Linq;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Person[] people = new Person[] {