How to parse json string in ASP.NET with C#?

Question

0.00/5 (No votes)

See more:

I want to parse a Json string and fetch the code in the class ErrorDetail1 from the below. I am using asp.net with c#. I am getting null value
Code tried is as below:

var jsonData = System.IO.File.ReadAllText(@"E:\Alex\test.json");
var myDetails = Newtonsoft.Json.JsonConvert.DeserializeObject<ErrorDetail1>(jsonData);
string code= myDetails.Code;

What I have tried:

My json string is as below:

{
"Header": {
"Audit": {
"T24_time": 285,
"ResponseParse_time": 0,
"RequestParse_time": 167
},
"Id": "PI2206601ZB01YQ8",
"Status": "failed",
"UniqueIdentifier": "IRFX221580544240744.00"
},
"Error": {
"Type": "BUSINESS",
"ErrorDetails": [
{
"FieldName": "debitAccountId",
"Code": "E-117691",
"Message": "ACCOUNT RECORD MISSING"
}
]
},
"Override": {},
"TraceId": "1de9e971-8f5f-47d4-e2c3-0a45c9aa1dd8"
}

My class for above json string is as below:

// Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);
    public class DDS_TRANSACT_POSTING_RESPONSE_FAILURE_DETAILS
    {
        public int T24_time { get; set; }
        public int ResponseParse_time { get; set; }
        public int RequestParse_time { get; set; }
    }

    public class Error
    {
        public string Type { get; set; }
        public List<ErrorDetail> ErrorDetails { get; set; }
    }

    public class ErrorDetail1
    {
        public string FieldName { get; set; }
        public string Code { get; set; }
        public string Message { get; set; }
    }

    public class Header
    {
        public DDS_TRANSACT_POSTING_RESPONSE_FAILURE_DETAILS Audit { get; set; }
        public string Id { get; set; }
        public string Status { get; set; }
        public string UniqueIdentifier { get; set; }
    }

    public class Override
    {
    }

    public class Root
    {
        public Header Header { get; set; }
        public Error Error { get; set; }
        public Override Override { get; set; }
        public string TraceId { get; set; }
    }

Posted 7-Oct-22 2:35am

Member 7513082

Updated 7-Oct-22 2:53am

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2022-10-07T02:53:00

Solution 1

The whole JSON is not an instance of an ErrorDetail (or ErrorDetail1): it's an instance of a Root. If you explicitly specify the class to deserialize to and it doesn't match the data, it will return an empty object.

Remove the specific class, and it'll start to work:

C#

var myDetails = Newtonsoft.Json.JsonConvert.DeserializeObject(jsonData);

Posted 7-Oct-22 2:53am

OriginalGriff

Comments

Member 7513082 7-Oct-22 9:15am

How to fetch the value of Code coming under Error Detail in the response

OriginalGriff 7-Oct-22 10:10am

Follow the property chain, just like you would with any other classes.

Member 7513082 7-Oct-22 10:32am

Tried as below but didn't work
Error objResponseError = new Error();
ResponseErrorCode = objResponseError.ErrorDetails[0].Code;
ResponseErrorCodeDescription = objResponseError.ErrorDetails[0].Message;

Getting object refernece issue

json string getting as response is as below:
{
"Header": {
"Audit": {
"T24_time": 285,
"ResponseParse_time": 0,
"RequestParse_time": 167
},
"Id": "PI2206601ZB01YQ8",
"Status": "failed",
"UniqueIdentifier": "IRFX221580544240744.00"
},
"Error": {
"Type": "BUSINESS",
"ErrorDetails": [
{
"FieldName": "debitAccountId",
"Code": "E-117691",
"Message": "ACCOUNT RECORD MISSING"
}
]
},
"Override": {},
"TraceId": "1de9e971-8f5f-47d4-e2c3-0a45c9aa1dd8"
}

OriginalGriff 7-Oct-22 10:43am

So ... you didn't read a single word I said, then.

Richard MacCutchan 7-Oct-22 10:48am

You have mistyped the name of one of your classes. You have public class ErrorDetail1 instead of public class ErrorDetail.