C# Deserialize JSON data

Question

I have a JSON

{{  "action": "rma",  "devices": "[95001105,30013103,300117]",  "devandreason": [    {      "device": 95001105,      "reason": 100    },    {      "device": 30013103,      "reason": 300    },    {      "device": 300117,      "reason": 200    }  ]}}

for which I'm trying to get the devandreason as an array. I've tried creating classes

public class DevReasonList
    {
        public List<DevReason> devandreason { get; set; }
    }
    public class DevReason
    {
        public Double device { get; set; }
        public Double reason { get; set; }
    }

and the json_serializer:

JavaScriptSerializer json_serializer = new JavaScriptSerializer();
DevReasonList deviceAndReasonList = json_serializer.Deserialize<DevReasonList>(json.devandreason);

but it throws an exception:

json_serializer.Deserialize<DevReasonList>(json.devandreason) 'json_serializer.Deserialize<DevReasonList>(json.devandreason)' threw an exception of type 'Microsoft.CSharp.RuntimeBinder.RuntimeBinderException' dynamic {Microsoft.CSharp.RuntimeBinder.RuntimeBinderException}

But I don't know what I'm doing wrong :(

It is possible to deserialize devandreason and make it an array?

Check out json2csharp.com. It's quite helpful when deserializing json. — Tarzan
– Tarzan, Commented Apr 28, 2017 at 14:58
Any specific reason you have quotes between [95001105,30013103,300117] ? — Rafael
– Rafael, Commented Apr 28, 2017 at 15:53
The devices list has integer values. That's what I'm receiving in the controller after calling Ajax with json.stringify — LAffair
– LAffair, Commented Apr 30, 2017 at 17:35

Botonomous · Accepted Answer · 2017-04-28 15:55:30Z

5

This should be your model according to

public class Devandreason
{
    public int device { get; set; }
    public int reason { get; set; }
}

public class RootObject
{
    public string action { get; set; }
    public string devices { get; set; }
    public List<Devandreason> devandreason { get; set; }
}

I removed the beginning { and trailing } and it now validates

{  "action": "rma",  "devices": "[95001105,30013103,300117]",  "devandreason": [    {      "device": 95001105,      "reason": 100    },    {      "device": 30013103,      "reason": 300    },    {      "device": 300117,      "reason": 200    }  ]}

Bonus: http://json2csharp.com/

Edit: As raised by @Sven in the comments: RootObject would be so much easier to traverse if your devices type was List.

Here is the json that would be required, I just removed the quotes before the value:

{  "action": "rma",  "devices": [95001105,30013103,300117],  "devandreason": [    {      "device": 95001105,      "reason": 100    },    {      "device": 30013103,      "reason": 300    },    {      "device": 300117,      "reason": 200    }  ]}

edited Apr 28, 2017 at 15:55

answered Apr 28, 2017 at 14:57

Botonomous

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5 Comments

Mike_G Over a year ago

sweet sweet link.

Rafael Over a year ago

Why is "devices" not a List<int>?

Rafael Over a year ago

Nvm I just noticed the quotes around the []

Botonomous Over a year ago

@Sven, you raise a good point however, If the Json could be changed to remove the quotes, then this model would be a lot easier to traverse.

Rafael Over a year ago

Probably a mistake of his or something very specific on his part.

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