217. Convertir JSON a las clases correspondientes en C#

Json.Net se ha convertido en una biblioteca muy útil para poder hacer uso de JSON, entre las funciones de la biblioteca se encuentra el hecho de serializar y deserializar clases.

En este ejemplo vamos a suponer que tenemos un JSON y queremos serializarlo para poder manipularlo, ¿Cómo haremos esto? es sencillo, consideremos el siguiente JSON

[{"faceId":"bbb1c3d3-7e0b-4d03-826e-b5cef7afc660","faceRectangle":{"top":241,"left":271,"width":187,"height":187},"faceAttributes":{"smile":0.0,"headPose":{"pitch":-0.4,"roll":-2.2,"yaw":7.7},"gender":"male","age":40.0,"facialHair":{"moustache":0.6,"beard":0.4,"sideburns":0.1},"glasses":"ReadingGlasses","emotion":{"anger":0.0,"contempt":0.001,"disgust":0.0,"fear":0.0,"happiness":0.0,"neutral":0.984,"sadness":0.015,"surprise":0.0},"blur":{"blurLevel":"low","value":0.24},"exposure":{"exposureLevel":"goodExposure","value":0.66},"noise":{"noiseLevel":"low","value":0.01},"makeup":{"eyeMakeup":false,"lipMakeup":true},"accessories":[{"type":"glasses","confidence":0.99}],"occlusion":{"foreheadOccluded":false,"eyeOccluded":false,"mouthOccluded":false},"hair":{"bald":0.17,"invisible":false,"hairColor":[{"color":"brown","confidence":0.99},{"color":"black","confidence":0.81},{"color":"gray","confidence":0.31},{"color":"blond","confidence":0.25},{"color":"red","confidence":0.13},{"color":"other","confidence":0.09}]}}}]

El primer paso es obtener las clases correspondientes a el, esto lo podemos hacer de forma manual o entrar en la pagina:

http://json2csharp.com/

Y en esta pagina vamos a colocar el JSON generándonos las clases necesarias

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 HeadPose
{
    public double pitch { get; set; }
    public double roll { get; set; }
    public double yaw { get; set; }
}
public class FacialHair
{
    public double moustache { get; set; }
    public double beard { get; set; }
    public double sideburns { 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 Blur
{
    public string blurLevel { get; set; }
    public double value { get; set; }
}
public class Exposure
{
    public string exposureLevel { get; set; }
    public double value { get; set; }
}
public class Noise
{
    public string noiseLevel { get; set; }
    public double value { get; set; }
}
public class Makeup
{
    public bool eyeMakeup { get; set; }
    public bool lipMakeup { get; set; }
}
public class Occlusion
{
    public bool foreheadOccluded { get; set; }
    public bool eyeOccluded { get; set; }
    public bool mouthOccluded { get; set; }
}
public class HairColor
{
    public string color { get; set; }
    public double confidence { get; set; }
}
public class Hair
{
    public double bald { get; set; }
    public bool invisible { get; set; }
    public List<HairColor> hairColor { get; set; }
}
public class FaceAttributes
{
    public double smile { get; set; }
    public HeadPose headPose { get; set; }
    public string gender { get; set; }
    public double age { get; set; }
    public FacialHair facialHair { get; set; }
    public string glasses { get; set; }
    public Emotion emotion { get; set; }
    public Blur blur { get; set; }
    public Exposure exposure { get; set; }
    public Noise noise { get; set; }
    public Makeup makeup { get; set; }
    public List<object> accessories { get; set; }
    public Occlusion occlusion { get; set; }
    public Hair hair { get; set; }
}
public class RootObject
{
    public string faceId { get; set; }
    public FaceRectangle faceRectangle { get; set; }
    public FaceAttributes faceAttributes { get; set; }
}

Estas clases las agregamos a nuestro proyecto.

Ahora únicamente efectuamos esta llamada

List<RootObject> caras= JsonConvert.DeserializeObject<List<RootObject>>(contentString);


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