How to use RestSharp.NetCore in asp.net core

Question

I have gone through the http://restsharp.org/ code which work greats. Below is the code of RestSharp with out asp.net core .

public GenericResponseObject<T> GetGeneric<T>(string operation, params KeyValuePair<string, string>[] nameValues) where T : class
{
    RestClient client = new RestClient(_baseUrl)
    {
        Authenticator = new HttpBasicAuthenticator(_username, _password)
    };

    RestRequest request = new RestRequest(operation, Method.GET);

    foreach (KeyValuePair<string, string> nameValue in nameValues)
    {
        request.AddQueryParameter(nameValue.Key, nameValue.Value);
    }

    IRestResponse<GenericResponseObject<T>> response = client.Execute<GenericResponseObject<T>>(request);
        GenericResponseObject<T> responseObject = response.Data;
        return responseObject;
    }
}

This code works great to me. Now I want to implement same code in asp.net core.

Can I get a sample example how to use RestSharp in asp.net core. I have added the dependency RestSharp.NetCore": 105.2.3.

Answer 1

RestSharp v106 supports .NET Standard so your code should work without changes.

RestSharp.NetCore package is not from RestSharp team and is not supported by us. It is also not being updated and the owner does not respond to messages, neither the source code of the package is published.

Answer 2

Update: I still see upvotes on this. Please follow Alexey Zimarev's answer instead. This answer was for the non-opensource RestSharp.NetCore nuget package, when the offical RestSharp package did not target .NET Standard.

---

Adding to Antwone Antics's answer, create an extension class:

public static class RestClientExtensions
{
    public static async Task<RestResponse> ExecuteAsync(this RestClient client, RestRequest request)
    {
        TaskCompletionSource<IRestResponse> taskCompletion = new TaskCompletionSource<IRestResponse>();
        _ = client.ExecuteAsync(request, r => taskCompletion.SetResult(r));
        return (RestResponse)(await taskCompletion.Task);
    }
}

You can now use it as follows:

var client = new RestClient(BASE_URL);
var request = new RestRequest();
// do whatever else you want/need to, to the request
// ...

// ... and use it like we used to
var response = await client.ExecuteAsync(request);

You can also create extension methods that parses the response to return a strong type and so on.

Answer 3

There's an existing StackOverflow question and example that calls ExecuteAsync on RestSharp.NetCore.

ExecuteAsyncPost Example in RestSharp.NetCore

I successfully used that example when referencing RestSharp.NetCore 105.2.3 with Newtonsoft.Json 9.0.2-beta2.

using System.Threading.Tasks;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
using RestSharp;

public async Task<SomeObject> TestPost(ObjectFoo foo)
{
    JsonSerializerSettings jsonSerializerSettings = new JsonSerializerSettings { 
    ContractResolver = new CamelCasePropertyNamesContractResolver() 
    };

    RestClient restClient = new RestClient(API_URL);

    RestRequest request = new RestRequest("SOME_METHOD", Method.POST);
    request.AddHeader("Accept", "application/json");

    string jsonObject = JsonConvert.SerializeObject(foo, Formatting.Indented, jsonSerializerSettings);
    request.AddParameter("application/json", jsonObject, ParameterType.RequestBody);

    TaskCompletionSource<IRestResponse> taskCompletion = new TaskCompletionSource<IRestResponse>();

    RestRequestAsyncHandle handle = restClient.ExecuteAsync(
        request, r => taskCompletion.SetResult(r));

    RestResponse response = (RestResponse)(await taskCompletion.Task);

    return JsonConvert.DeserializeObject<SomeObject>(response.Content);
}