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javascriptc#jsonserializationjson.net
lpernice
lpernice

Reputation: 127

C# JSON deserialize into complex class

I have a JSON like this

    {
  "Application": [
    {
      "Office": "London",
      "LogPath": [
        "\\\\server1\filepath\\"           
      ]
    },
    {
      "Office": "Paris",
      "LogPath": [
        "\\\\server2\\logpath1\\",
        "\\\\server2\\logpath2\\"
      ]
    }
  ],
  "MailSettings": {
    "MailTo": "[email protected]",
    "MailSubject" :  "Log Checker"
  } 
}

and i have create a custom class to read the json content :

public class RootObject
  {
    public Application Application { get; set; }
    public MailSettings MailSettings { get; set; }
  }

  public class Application
  {
    public List<Offices> Offices { get; set; }
  }

  public class Offices
  {
    public string Office{ get; set; }
    public IList<string> LogPath { get; set; }
  }

  public class MailSettings
  {
    public string MailTo { get; set; }
    public string MailSubject { get; set; }
  }

But when i try to deserialize the json with

RootObject rootObject = JsonConvert.DeserializeObject<RootObject>(json);

I return the error : the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.

Which is wrong with my custom class ?

Upvotes: 0

Views: 118

Answers (4)

MRMF
MRMF

Reputation: 48

I tested your code.your problem is in your RootObject model. In your RootObject you have a collection of application not single application. i changed it and it wrok correctly.

Upvotes: 0

Fenton
Fenton

Reputation: 251172

You can generate types using json2csharp - to save hand-crafting a representation of the JSON object.

public class RootObject
{
    public List<Application> Application { get; set; }
    public MailSettings MailSettings { get; set; }
}

public class Application
{
    public string Office { get; set; }
    public List<string> LogPath { get; set; }
}

public class MailSettings
{
    public string MailTo { get; set; }
    public string MailSubject { get; set; }
}

Using Visual Studio "Paste JSON as Classes" gives you the equally functional, but slightly different:

    public class Rootobject
    {
        public Application[] Application { get; set; }
        public Mailsettings MailSettings { get; set; }
    }

    public class Mailsettings
    {
        public string MailTo { get; set; }
        public string MailSubject { get; set; }
    }

    public class Application
    {
        public string Office { get; set; }
        public string[] LogPath { get; set; }
    }

Visual Studio Code users can get the same feature using the JSON as Code extension, powered by QuickType.

Upvotes: 1

Prasad Telkikar
Prasad Telkikar

Reputation: 16079

Copy your json string and use visual studio inbuild feature to create custom class for respective json.

- Goto Edit -> Special Paste -> Paste JSON as Class

This will create custom class for you. Now using Newtonsoft.Json library, you can deserialize your json.

Upvotes: 0

MesutAtasoy
MesutAtasoy

Reputation: 822

Your custom classes should be like it. 

 public class Application
    {
        public string Office { get; set; }
        public List<string> LogPath { get; set; }
    }

    public class MailSettings
    {
        public string MailTo { get; set; }
        public string MailSubject { get; set; }
    }

    public class RootObject
    {
        public List<Application> Application { get; set; }
        public MailSettings MailSettings { get; set; }
    }

Upvotes: 0

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