JSON deserialization to class with C#

Question

Validated the JSON using: http://jsonlint.com/ and created the C# classes using: json2csharp.com.

I've tried deserializing with JSON.Net, RestSharp, .Net DataContractJsonSerializer and JavaScriptSerializer, but none work. The class is always empty and no errors are thrown.

I enabled debugging with JSON.Net as specified here: http://blog.mrlacey.co.uk/2012/03/debugging-deserialization-errors-in.html, but no errors are thrown.

I've also tried with a simplified Invoice class (no lists) as all I need are a few of the basic properties.

Any ideas on what I'm doing wrong would be appreciated.

Invoice ret = JsonConvert.DeserializeObject<Invoice>(results.Content);

This is the JSON being returned via RestSharp in .Content.

{ "code": 0, "message": "success", "invoice": { "invoice_id": "464323000000255001", "invoice_number": "993301", "date": "2014-03-01", "status": "draft", "payment_terms": 0, "payment_terms_label": "Due on Receipt", "due_date": "2014-03-01", "payment_expected_date": "", "last_payment_date": "", "reference_number": "", "customer_id": "464323000000194095", "customer_name": "User, Test", "contact_persons": [], "currency_id": "464323000000005001", "currency_code": "USD", "currency_symbol": "$", "exchange_rate": 1, "discount": 0, "is_discount_before_tax": true, "discount_type": "item_level", "recurring_invoice_id": "", "is_viewed_by_client": false, "line_items": [ { "line_item_id": "464323000000255009", "item_id": "464323000000047609", "project_id": "", "time_entry_ids": "", "expense_id": "", "expense_receipt_name": "", "name": "Management Fees", "description": "Testing invoice update", "item_order": 0, "bcy_rate": 1, "rate": 1, "quantity": 1, "unit": "", "discount_amount": 0, "discount": 0, "tax_id": "", "tax_name": "", "tax_type": "tax", "tax_percentage": 0, "item_total": 1 }, { "line_item_id": "464323000000255011", "item_id": "464323000000047609", "project_id": "", "time_entry_ids": "", "expense_id": "", "expense_receipt_name": "", "name": "Management Fees", "description": "Another test", "item_order": 1, "bcy_rate": 2, "rate": 2, "quantity": 1, "unit": "", "discount_amount": 0, "discount": 0, "tax_id": "", "tax_name": "", "tax_type": "tax", "tax_percentage": 0, "item_total": 2 } ], "shipping_charge": 0, "adjustment": 0, "adjustment_description": "Adjustment", "late_fee": { "name": "", "type": "percentage", "rate": 0, "amount": 0, "frequency_type": "month" }, "sub_total": 3, "tax_total": 0, "total": 3, "taxes": [], "payment_reminder_enabled": true, "payment_made": 0, "credits_applied": 0, "tax_amount_withheld": 0, "balance": 3, "write_off_amount": 0, "allow_partial_payments": false, "price_precision": 2, "payment_options": { "payment_gateways": [] }, "is_emailed": false, "reminders_sent": 0, "last_reminder_sent_date": "", "billing_address": { "address": "", "city": "", "state": "", "zip": "", "country": "", "fax": "" }, "shipping_address": { "address": "", "city": "", "state": "", "zip": "", "country": "", "fax": "" }, "notes": "Thanks for your business.", "terms": "", "custom_fields": [], "template_id": "464323000000025001", "template_name": "Standard Template", "template_type": "standard", "created_time": "2014-02-21T08:39:11-0500", "last_modified_time": "2014-02-21T08:39:11-0500", "attachment_name": "", "can_send_in_mail": true, "salesperson_id": "", "salesperson_name": "", "invoice_url": "" }}

MarcinJuraszek · Accepted Answer · 2014-02-21 17:43:39Z

2

Invoice is not the top level class for your JSON. You should use RootObject instead:

var ret = JsonConvert.DeserializeObject<RootObject>(results.Content);

To get Invoice use ret.invoice after deserialization.

answered Feb 21, 2014 at 17:43

MarcinJuraszek

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1 Comment

topry Over a year ago

Thanks - that was it. I had tried this initally when using only Json.Net and it was throwing an error: "Input string was not in a correct format" and I pursued other attempts. The input string issue was due to one of the properties being an Int and the value was decimal. By that point, myopia set in and I could not see the forest for the trees...

Tim S. · Accepted Answer · 2014-02-21 17:44:31Z

Using the classes generated from http://json2csharp.com, you should be deserializing to a RootObject, not to an Invoice.

public class RootObject { public int code { get; set; } public string message { get; set; } public Invoice invoice { get; set; } } Invoice ret = JsonConvert.DeserializeObject<RootObject>(results.Content).invoice;

evanmcdonnal · Accepted Answer · 2014-02-21 17:44:47Z

Ok it's because you're trying to deserialize into an Invoice but it's actually nested within another object in the json;

public class Wrapper { public Invoice invoice { get; set; } public int code { get; set; } public int message { get; set; } }

Then do;

 Wrapper wrap = JsonConvert.DesrializeObject<Wrapper>(results.Contect); if (rwap != null) Invoice i = wrap.Invoice;

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