Create a JSON string in C#

Question

I'm trying to create an object to be returned as JSON for my REST Web Service.

I wish to get something returned like this:

{
    "message": [
    {
        "name": "whatever.bmp"
    }
    ],
    "errors": null,
    "FileInflected": 0,
    "path": "C:\thepath"
}

So, how can I change the class (eFileOutput) in C#?

How can I change the class I have below?

Currently I'm able to create similar output like this:

{
  "message": "Hello World",
  "errors": null,
  "FileInfected": 0,
  "path": "C:\bla bla..."
}

and my C# class is as follows:

[DataContract]
    public class eFileOutput
    {
        [DataMember]
        public string message { get; set; }
        [DataMember]
        public string errors { get; set; }
        [DataMember]
        public Int32 FileInfected { get; set; }
        [DataMember]
        public string path { get; set; }
    }

Tks

Possible duplicate of [How to create JSON string in C#](http://stackoverflow.com/questions/1056121/how-to-create-json-string-in-c-sharp) — VVN, Mar 10 '16 at 10:14

score 1 · Accepted Answer · edited May 23 '17 at 11:53

1

This is the classes that represent the JSON you've stated:

public class Message
{
    public string name { get; set; }
}

public class MyObject
{
    public List<Message> message { get; set; }
    public object errors { get; set; }
    public int FileInflected { get; set; }
    public string path { get; set; }
}
var json = Newtonsoft.Json.JsonConvert.SerializeObject(new MyObject
{
    message = new List<Message>
    {
        new Message {name = "whatever.bmp"}
    },
    FileInflected = 0,
    path = @"c:\thepath"
});

Edit (thanks to devzero): Then you can serialize using Newtonsoft (my favorite) or JavaScriptSerializer as stated here: Turn C# object into a JSON string in .NET 4

edited May 23 '17 at 11:53

Community

1
1

answered Mar 10 '16 at 10:13

Felix Av

1,254
1
14
22

Added an edit that actually produces the correct JSON with values from above into the json variable. – devzero Mar 10 '16 at 10:50
Tks a lot, this was helpful! – Trowa Mar 11 '16 at 01:24

score 0 · Answer 2 · answered Mar 10 '16 at 10:20

public class MyObject
{
    public Message Message { get; set; }

    public List<Error> Errors { get; set; }

    public int FileInflected { get; set; }

    public string Path { get; set; }
}

public class Message
{
    public string Name { get; set; }
}

public class Error
{
    //Whatever you want
}

and if You want to serialize member as camelCase, describe like this:

var jsonSerializerSettings = new JsonSerializerSettings { ContractResolver = new CamelCasePropertyNamesContractResolver() };
var json = JsonConvert.SerializeObject(c, jsonSerializerSettings);

Create a JSON string in C#

2 Answers2