Restsharp deserialize json array The RestSharp documentation on deserialization confirms that the deserializer only supports List<T> and Dictionary<T1,T2> collection types. xxx fields in the response JSON (such as implementing a loop for paged results), the following is my implementation which expands on the solution from andygjp. The return sometimes contains a single, empty object when the data definition calls for an array of objects. Plan B, you could use the newtonsoft json nuget package to deserialise the raw string you're getting from response. Serializers. NET to work with the JSON response I received. Feb 18, 2014 · Tuesday, February 18, 2014 Using RestSharp to Deserialize JSON Simple Examples RestSharp is a . Json, deserization works even with DataMember annotated properties, whereas built-in deserializer seems to ignore those properties, always returning default value for associated type. Json, you can install the RestSharp. Each API would most probably require different settings for RestClient. Tutorial contents Installing RestSharp Simple POST request with a JSON body POST request with strongly typed response POST request with async Jun 30, 2023 · Is there a way to transform the data on deserialization process, or trigger a method on Points-object after deserialization complete? I'm using RestSharp-lib with default serializer System. NET applications. Additionally, the RestSharp JsonSerializer does not serialize the object graph into the above quoted JSON. We are using Newtonsoft. Execute<Response>(request); and not IRestResponse interface. Jul 18, 2019 · I've tried simply deserializing to a type of Object results in it being re-serialized into an array of empty arrays; probably because Newtonsoft's JSON Serializer by default deserializes Objects to JObjects, which is essentially an enumerable of KVPs. NET" May 13, 2013 · 7 Looking at the source code for RestSharp, it appears that it uses its own internal JSON deserializer (called SimpleJson), as opposed to using Json. Json structure is made up with {}, [], comma, colon and double quotation marks and it includes the following data types: Object, Number, Boolean, String, and Array. Json as a serializer for RestSharp instead of the default JSON serializer based on System. Dec 21, 2013 · Hello, I'm using the latest version of RestSharp, from NuGet. About This library allows using Newtonsoft. Execute<T> (request). Similarly, Execute{Method}Async return a generic instance of RestResponse where T is the response object type. May 21, 2017 · Deserialization RestSharp contains inbuilt de-serializers that support XML and JSON. Jun 24, 2014 · Even though I'd like to see RestSharp be a complete solution in the future (implementing Json. In addition, you can use a CSV serializer or write your own. Feb 18, 2014 · RestSharp is a . I'm querying an API that returns a JSON dictionary in which the keys cannot be hard coded into a C# class before-hand. For that purpose I tried to create some POCO classes which represent the JSON Response [1]. NET REST client that can be downloaded and used to easily serialize and deserialize both XML and JSON. String Read here about how RestSharp handles exceptions. I am trying to use RestSharp to deserialize a JSON return into C# classes. Aug 20, 2020 · Cannot deserialize the current JSON object because the type requires a JSON array (e. For information about request C# : RestSharp Deserialization with JSON ArrayTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"I promised to reveal a secret f RestSharp allows adding complex objects as request body to be serialized when making a call to an API endpoint, and deserializing the response to a given . JSON requests RestSharp provides an easier API for making calls to endpoints that accept and return JSON. NET 4. Deserialize<Class>(responseJson). Other RestSharp HTTP examples: GET, PUT, DELETE. JsonDeserializer deserial = new JsonDeserializer(); var x = deserial . cwharris – cwharris 2012-04-17 22:19: Nov 13, 2013 · The JSON. NET which is also more powerful and flexible. 70 In the current version of RestSharp (105. How is restsharp used to deserialize JSON and XML? – Weinberg’s Law RestSharp is a . com/harvesthq/api#api-json The data returned looks like this: Updated (see at Tags: The Client side receives a formal JSON content " {\"Id\": [1,2,3],\"Size\":56}", but get an error in deserialization the byte array. 0. Below example implementation: Apr 9, 2020 · I need help to know what I am doing wrong, I have little time working with c#. Then feed the JSON to Json. My attempt using NewtonSoft: Oct 5, 2020 · And I tried using a wrapper for JSON array inside my deserializer class and didn't work either. Json Cannot deserialize the current JSON array (e. Jan 20, 2022 · Unable to cast object of type 'RestSharp. Json Asked 9 years, 11 months ago Modified 1 year, 3 months ago Viewed 87k times Few things on RestSharp Serialization and Deserialization. Oct 20, 2025 · RestSharp JSON Array deserialization Asked 11 years, 10 months ago Modified 5 years, 1 month ago Viewed 23k times May 10, 2015 · I'm having challenges trying to deserialize a json array into a . Object]' "RestSharp ignore null values during JSON array deserialization" Description: Learn how to configure RestSharp to ignore null values when deserializing JSON arrays in C#. However, attributes do only allow constants, which means I can't do: [DeserializeAs(Name = typeof(T). My attempt using NewtonSoft: public static async Task<List<ServicemanHistory>> getServiceManHistory() { string url = "https://myapi. DeserializeObject method is able to successfully deserialize this JSON into the correct object hierarchy. NET in C#. My problem is how to get the array in the proper structure. Json . Json, which is a part of . NET 7. 2. Dec 5, 2015 · How do I deserialize a JSON array using Newtonsoft. I’ve successfully set up an initial test, but I’m now looking at creating a series of assertions to ensure that certain values are returned in the response My test looks as below: [Test] public void ShouldHaveDataAttributes() { var restClient = new RestClient("http Oct 19, 2011 · When deserializing an object which has an array of sub items the default json deserializer complains that there's no default constructor (arrays don't have default constructors). JsonArray' to type 'System. Dec 21, 2013 · In most of these queries, the API returns a documented key-value format that I can easily (automatically with RestSharp) deserialize into my POCOs. I need to collect data from only 4 of them. Net. UPDATE: I'm not attached to any library, I have free choice, the only restriction I have to stick to is . The response looks like this: { Nov 19, 2018 · I want to deserialize a JSON with array using RestSharp deserialize. Apr 5, 2013 · The myItems object is always null. 3 Below is a quick set of examples to show how to send HTTP POST requests from . Keeps the code very dry. NET to an API using the RestSharp HTTP client which is available on NuGet. Nov 8, 2015 · RestSharp is a popular library for querying RESTful APIs with . RestSharp also offers simple ways to call APIs that accept and return JSON payloads. g. Also, double check the Content-Type of the response, if the responses is something non-default, RestSharp may not uses the JsonDeserializer at all. Aug 17, 2018 · Expected Behavior I create a class that contains a Dictionary. public class details { public string id { get; set; } public string tran_id { get; set; } public string tran_type If this isn't already json then that might be what's confusing the deserialiser. Data is always null. Content, but response. Currently using RestSharp in my MVC 5 project and doing the below and even though I have data, am seeing null in response. If necessary, it will used fuzzy element name matching to map from the original JSON object to C# so that if an exact property name match isn’t found it will use the following precedence to deserialize Jul 14, 2023 · C# RestSharp tutorial shows how to create HTTP requests with RestSharp in C#. Mar 23, 2015 · I'm trying to deserialize the following JSON response using RestSharp. NET type. Steps as follows. Aug 31, 2015 · Deserialize nested JSON array using RestSharp Asked 10 years, 1 month ago Modified 10 years, 1 month ago Viewed 934 times May 4, 2015 · In the restsharp documentation I found that I could use [DeserializeAs(Name = "CustomProperty")] to tell the deserializer which field to map to this property. RestSharp allows adding complex objects as request body to be serialized when making a call to an API endpoint, and deserializing the response to a given . The content type is "text/json" so the correct deserializer is fired, but I think the problem lies in the nested array. You can use the GetJsonAsync and PostJsonAsync extension methods, which will automatically serialize the request body to JSON and deserialize the response to the specified type. My Test method is as follows, [Test] public void Test1() { Jul 29, 2016 · Hi, Am fairly new to Restsharp. This system handles both request body serialization when sending data and response deserialization when receiving data. For now I've repla All ExecuteAsync functions return an instance of RestResponse. Essentially, it means that top-level strings won't be serialized as JSON when you use AddJsonBody. I then use RestSharp to serialize to JSON, and then expect to be able to deserialize it back. net for deserialization and get more detailed debugging information. Content if you're still having issues. Deserialize function expects an IRestResponse Is there a way to use RestSharp to just deserialize raw strings? Apr 4, 2014 · If Roles is an array, why does your model declare it as a string? The whole point of deserialization is to turn the JSON string representation of objects back into objects. Here is my code so far: using System; using RestSharp; using RestSharp. RestSharp supports JSON and XML serialization and deserialization by default. Authenticators; Similarly, you can make GET calls with or without deserialization of the response using ExecuteGetAsync(resource), GetAsync(resource), ExecuteGetAsync<TResponse>(resource), and GetAsync<TResponse>(resource) (see below). . What is the value of ContentType before you overwrite it? If the server is not sending it as JSON, then perhaps the library isn't parsing it as such. Serialization One of the most common reasons to choose RestSharp over plain HttpClient is its rich build-in serialization support. To overcome this issue, you can use an overload of AddJsonBody, which allows you to tell RestSharp to serialize the string as JSON: Using Newtonsoft. token; var client = new RestClient(url); var request = new RestRequest(Method. For example, let's look at a simple Twitter API v2 client, which uses OAuth2 machine-to-machine Oct 19, 2014 · If you need access to the @odata. AddBody(). I'm using as my HTTP client and for (de)serialization. NET JsonConvert. This article shows how to use a custom JSON serializer and deserializer for RestSharp requests and responses. But, one particular JSON resul Apr 7, 2016 · I am trying to deserialize a JSON return from a RestSharp call to an API. Therefore, you can now simply use the attribute JsonPropertyName to decorate the properties in the DTO class. Data. FullName)] public T Item { get; set; } Does anyone know a clever solution to this? Feb 22, 2015 · The trick as shown in Danciel C's code is to Deserialize the Root Object (as alluded to above) and then to pass the next nested object as a var and keep going recursively until you get to the class you want! When working with RestSharp and JSON arrays, you can use the Deserialize method to deserialize the response into an array of objects. com I don't know RestSharp, so take this with a pinch of salt, but I presume that setting the response Content-Type is too late, the library will already have parsed the response data if it could. NET to replace the default RestSharp serializer. Deserializers. IDictionary 2[System. Net or some other library. 0 and RestSharp 108. com. How do I need to setup the class that will contain the object to make this work Jan 26, 2023 · Tutorial built with . Note that newtonsoft defaults to camel case for json properties. ---This video is See full list on jasonwatmore. Thi Sep 7, 2018 · I’m looking for some general advice with an API framework I am setting up using C# and RestSharp as the client library. Json. 0) you can add a JSON object to the request body with: I am trying to deserialize data from Harvest but its failing (no error): https://github. Feb 17, 2018 · Does anyone know how to write a class that allow restsharp to deserialize a json that has multiple integer fields (with different names) into one same array? I have a json Feb 20, 2022 · I am trying to write simple Get operation using RestSharp and trying to use System. NET using RestSharp, but this version uses an async method and the await C# operator to wait for the asynchronous HTTP request to complete without blocking the thread that called the async method. Execute(request); var keyResponse = JsonConvert. Json package. This is the code where the response is deserialized into json: … May 29, 2025 · Serialization System Relevant source files Purpose and Scope The Serialization System provides a pluggable architecture for converting objects to and from different data formats (JSON, XML, CSV) during HTTP request and response processing. Custom JSON Serializer / Deserializer NewtonsoftJsonSerializer A custom serializer and deserializer for RestSharp simply needs to implement the ISerializer and IDeserializer interfaces. Create your own custom serializer that works with RestSharp by implementing ISerializer and IDeserializer Set the Serializer on the RestRequest object using 'JsonSerializer' property then do 'AddJsonBody' Use 'AddHandler' to Deserialize the response for content type Application/Json How to deserialize a JSON return into an array of objects from a RestSharp call to an API?，程序员大本营，技术文章内容聚合第一站。 Jan 27, 2023 · This sends the same GET request from . AddJsonBody (branchCode); Sep 4, 2012 · Returned JSON Snippet , "ExtendedData": { }, Unable to cast object of type 'RestSharp. Content); keyResponse should now be an instance of your key class deserialized from the JSON content. Aug 11, 2020 · Well these two responses return completely different JSON, so you will need different data models to deserialize each. Thanks. I have tried various model structures to extract the data to no avail. You can find an example of a Twitter API client on the Example page. NET Deserializer), that will have to be a feature addition. Net and maybe the . IDictionary`2 [System. DeserializeObject<key>(response. For this one particular query though, it's returning a dictionary of string-to-League objects, where the string key is the name of the League. When working with JSON responses, you often need to deserialize them into C# objects for further processing. The response type is deserialized to <JsonNode> so it can handle any dynamic properties returned in the response. If your JSON response contains nested objects or arrays, you'll need to create corresponding C# classes to represent the structure of the JSON response. Apr 4, 2022 · Describe how to deserialize JSON into dynamic object in C# with detail explanation and examples using native and Newtonsoft library Question I have a JSON response that I'm trying to deserialize with RestSharp , and it looks like this: RestSharp returning an empty array to json deserialize Asked 10 years, 5 months ago Modified 10 years, 5 months ago Viewed 877 times Jun 20, 2025 · 563 Views Asked by Mike Eber At 20 June 2025 at 02:45 2025-06-20 02:55:52 So normally one would create a class or even nested classes to deserialize most JSON. I do not I've a JSON string of this format: [{ "record": { "Name": "Komal", "Age": 24, "Location": " Jan 27, 2023 · A JSON object is added to the POST request body by passing a C# object to the RestSharp method request. For example, you need never deserialize nor create classes to deserialize to. Generic. 3. String,System. The message says:: "'Cannot deserialize the Read here about how RestSharp handles exceptions. If you want to use Newtonsoft. NET 6. NET POCO object. Collections. Jul 29, 2019 · @CodingCode Are you trying to post just the array (the part in square brackets), or are you trying to post an object with a property called "categories" containing an array? JSON deserialization with an array of polymorphic objects in C# can be achieved using the Newtonsoft. net"; string token = Settings. I can't iterate the json , I am using RestSharp and Newtonsoft. RestSharp is a simple REST and HTTP API Client for . 8 Framework. Aug 13, 2025 · I am trying to use RestSharp to deserialize a JSON return into C# classes. Deserialize<Customer>(myStringFromDB) But the . NET. The key advantage of RestSharp is its ability to easily handle JSON and XML serialization and deserialization, as well as offering flexibility to add custom headers and parameters. Try generating a second data model for the second response using one of the answers from How to auto-generate a C# class file from a JSON string, and you should be OK. [1,2,3]) to deserialize correctly It's my first time working with Json and I really hope there is a handy sollution for this ? For JSON, RestSharp will use JsonSerializer from the System. It provides a simple API to perform RESTful requests, including support for GET, POST, PUT, DELETE, and other HTTP methods. "C# RestSharp JSON response dynamic deserialization with Json. If there is n The AddJsonBody will detect if the parameter is a string and will add it as a string body with JSON content type. Hence, a dedicated API class (and its interface) gives you sound isolation between different RestClient instances and make them testable. My question is about how to serialize a dictionary of simple key value pairs into a single Json object: where each key is a property name, and each value is a property value. Text. Jul 29, 2016 · Nowadays, the default JSON serializer in RestSharp uses System. Json and RestSharp. GET calls Oct 30, 2024 · RestSharp is a popular library for simplifying HTTP requests in . Deserialize means convert an XML document into an object instance. Feb 14, 2016 · I use RESTSharp as well to make the call, but once I get the response I use Json. What RestSharp does Essentially, RestSharp is a wrapper around HttpClient that allows you to do the following: Add default parameters of any kind (not just headers) to the client, once Add parameters of any kind to each request (query, URL segment, form, attachment, serialized body, header) in a Nov 13, 2014 · I'd like to consume a REST Api and deserialize the nested JSON Response. org), looks like you need to use RestResponse<Response> response = client. Feb 28, 2025 · I get success printed in my console and I get the json returned from response. Feb 17, 2015 · RestSharp only operates on properties, it does not deserialize to fields, so make sure to convert your Devices and Device fields to properties. I kept running into exceptions deserializing the response on seemingly proper JSON that was handled fine by Json. When working with RestSharp and JSON arrays, you can use the Deserialize method to deserialize the response into an array of objects. In this example, we Oct 7, 2010 · I was trying to deserialize a list of JSON arrays into a list of custom types, however since the arrays contained different types (strings and ints) I had to deserialize into a list of objects. RestSharp. I did the same using NewtonSoft and that didn't fix it. NewtonsoftJson package and configure the client to use it: var client Aug 30, 2018 · Then create a new . That posters question was about the details of how to serialize a dictionary of complex objects into a Json array of Json objects. From here you should get a mostly working POCO that can be used for deserializing the JSON using Newtonsoft. Serialize means convert an object instance to an XML document. Test. Oct 1, 2018 · Just going through their documentation (restsharp. This verifies all characters in the response, which has its disadvantages but also huge upsides. Oct 12, 2012 · I need to read the following piece of code using RestSharp. My solution was to use RestSharp to perform a raw execute and use Json. Mar 24, 2021 · I am successfully calling and API using RestSharp which returns many addresses (1000s) and each address has about 70 attributes. JSON to consume { id: 32, name: "test supply object", formId: 4, sort Jun 12, 2019 · With RestSharp, Newtonsoft. Json library (also known as JSON. Nov 22, 2017 · I am dynamically taking different JSON structures into various C# structures, using RestSharp and IRestResponse<T> response = client. And I tried using a wrapper for JSON array inside my deserializer class and didn't work either. AddHeader ("Content-type", "application/json"); request. JsonConvert. Mar 16, 2022 · If it was actually streaming the response content, then the byte [] array is built more efficiently (internally it's streamed into a memory stream 16K at a time which is then turned into the byte array). Handle the remote endpoint response Deserialize the response from JSON or XML if necessary API client The best way to call an external HTTP API is to create a typed client, which encapsulates RestSharp calls and doesn't expose the RestClient instance in public. If necessary, it will used fuzzy element name matching to map from the original JSON object to C# so that if an exact property name match isn't found it will use the following precedence to deserialize the data. Can you please let me know if am doin This video talks about how we can Deserialize json using newtonsoft library with c# As an example we shall take a nested json with arrays Deserializing json to c# objects json serialization Sep 7, 2015 · How to configure RestSharp to use json. The example Jun 5, 2012 · I have run into this issue, too. "RestSharp ignore null values during JSON array deserialization" Description: Learn how to configure RestSharp to ignore null values when deserializing JSON arrays in C#. The correct de-serializer is chosen by RestSharp, based on the content type returned by the server. I keep getting tripped up on the nested arrays. Implement a custom IRestSerializer that uses Json. RestSharp supports the following content types: application/json – JsonDeserializer application/xml – XmlDeserializer text/json – JsonDeserializer Example RestSharp works best as the foundation for a proxy class for your API. How to use The default JSON serializer uses System. This is a C# console application. Json to deserialize the response. This package is now referenced by default, and it is the only dependency of the RestSharp NuGet package. I created the classes using json2csharp. cs file and go to Edit -> Past Special -> Paste Json as class. GET); Nov 8, 2019 · I'd like to consume a REST Api and deserialize the nested JSON Response. Json's method DeepEquals() to validate the responses returned (also using RestSharp, by the way). NET), a popular third-party library for working with JSON data in . NET to deserialize the result: var response = client. RestSharp is a popular HTTP client for C# that allows you to easily send HTTP requests and handle responses. Here is my generated POCO class (I used json2csharp): public class ClosedBy { public string link { get; set; Aug 11, 2015 · I am passing an array and gets a response "StatusCode: NotFound, Content-Type: , Content-Length: 0)" here's what I did: request. [1,2,3]) Asked 5 years, 8 months ago Modified 5 years, 8 months ago Viewed 457 times Description: Retrieves a JSON array response from a RESTful API using RestSharp and deserializes it into a list of objects using Json. RestSharp basics This page describes some of the essential properties and features of RestSharp. NET since . In addition, you can Apr 8, 2025 · Learn how to efficiently deserialize a JSON array of objects into a single object with properties in C# using Newtonsoft. nwhgp zmrv ghg vgwx dgh pebpvn hugqyt whbze cwjous xut oyi wabkv ouxzoap zslf iohdx