Newtonsoft.Json/Src/Newtonsoft.Json.Tests/Documentation/Samples/Linq/QueryJsonSelectTokenWithLinq.cs

using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Newtonsoft.Json.Tests.Documentation.Samples.Linq
{
  public class QueryJsonSelectTokenWithLinq
  {
    public void Example()
    {
      #region Usage
      JObject o = JObject.Parse(@"{
        'Stores': [
          'Lambton Quay',
          'Willis Street'
        ],
        'Manufacturers': [
          {
            'Name': 'Acme Co',
            'Products': [
              {
                'Name': 'Anvil',
                'Price': 50
              }
            ]
          },
          {
            'Name': 'Contoso',
            'Products': [
              {
                'Name': 'Elbow Grease',
                'Price': 99.95
              },
              {
                'Name': 'Headlight Fluid',
                'Price': 4
              }
            ]
          }
        ]
      }");

      IList<string> storeNames = o.SelectToken("Stores").Select(s => (string)s).ToList();

      Console.WriteLine(string.Join(", ", storeNames));
      // Lambton Quay, Willis Street

      IList<string> firstProductNames = o["Manufacturers"].Select(m => (string)m.SelectToken("Products[1].Name"))
                                                          .Where(n => n != null).ToList();

      Console.WriteLine(string.Join(", ", firstProductNames));
      // Headlight Fluid

      decimal totalPrice = o["Manufacturers"].Sum(m => (decimal)m.SelectToken("Products[0].Price"));

      Console.WriteLine(totalPrice);
      // 149.95
      #endregion
    }
  }
}