using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string jsonString = "[ {\"faceId\": \"626f5974-1d63-40d4-98f1-7e6a7df13dba\",\"faceRectangle\": {  \"top\": 108,  \"left\": 699,  \"width\": 208,  \"height\": 208     },\"faceAttributes\": {  \"smile\": 0.973,  \"gender\": \"male\",  \"age\": 25.7,  \"emotion\": {    \"anger\": 0.0,    \"contempt\": 0.026,    \"disgust\": 0.0,    \"fear\": 0.0,    \"happiness\": 0.973,    \"neutral\": 0.001,    \"sadness\": 0.0,    \"surprise\": 0.0        }    }},{\"faceId\": \"bc051f1d-9a64-4e86-bf95-2af1de21d316\",\"faceRectangle\": {  \"top\": 104,  \"left\": 634,  \"width\": 114,  \"height\": 114     },\"faceAttributes\": {  \"smile\": 0.074,  \"gender\": \"male\",  \"age\": 17.4,  \"emotion\": {    \"anger\": 0.003,    \"contempt\": 0.003,    \"disgust\": 0.001,    \"fear\": 0.002,    \"happiness\": 0.074,    \"neutral\": 0.828,    \"sadness\": 0.079,    \"surprise\": 0.01        }    }}]";

        var result = JsonConvert.DeserializeObject<IList<RootObject>>(jsonString);

        foreach ( var item in result )

            Console.WriteLine( item.faceId );

    }

}

​

// Generated by http://json2csharp.com

​

public class FaceRectangle

{

    public int top { get; set; }

    public int left { get; set; }

    public int width { get; set; }

    public int height { get; set; }

}

​

public class Emotion

{

    public double anger { get; set; }

    public double contempt { get; set; }

    public double disgust { get; set; }

    public double fear { get; set; }

    public double happiness { get; set; }

    public double neutral { get; set; }

    public double sadness { get; set; }

    public double surprise { get; set; }

}

​

public class FaceAttributes

{

    public double smile { get; set; }

    public string gender { get; set; }

    public double age { get; set; }

    public Emotion emotion { get; set; }

}

​

public class RootObject

{

    public string faceId { get; set; }

    public FaceRectangle faceRectangle { get; set; }

    public FaceAttributes faceAttributes { get; set; }

}