Reddit token

Token.cs

using Microsoft.Extensions.Configuration;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Doge.Utils
{

    public class RedditToken : IGetToken
    {
        public RedditToken(IConfiguration configuration)
        {
            Configuration = configuration;
        }
        IConfiguration Configuration { get; }

        public string GetToken()
        {
            var requestUrl = "https://www.reddit.com/api/v1/access_token";

            RestSharp.RestClient rc = new RestSharp.RestClient();
            RestSharp.RestRequest request =
                new RestSharp.RestRequest(requestUrl, RestSharp.Method.POST);
            var appId = Configuration["RedditSecretBot:AppId"];
            var Secret = Configuration["RedditSecretBot:Secret"];

            request.AddHeader("Authorization",
           "Basic " + Base64Encode(appId + ":" + Secret));

            request.AddParameter("grant_type", "client_credentials");

            RestSharp.RestResponse restResponse = (RestSharp.RestResponse)rc.Execute(request);
            RestSharp.ResponseStatus responseStatus = restResponse.ResponseStatus;

            if (responseStatus == RestSharp.ResponseStatus.Completed)
            {
                var response = restResponse.Content.ToString();
                var convertedResponse =
                    JsonConvert.DeserializeObject<TokenResponse>(response);
                return convertedResponse.access_token;
            }

            return String.Empty;
            // The response from this request, 
            //if successful, will be JSON of the following format:

            //{
            //    "access_token": Your access token,
            //    "token_type": "bearer",
            //    "expires_in": Unix Epoch Seconds,
            //    "scope": A scope string,
            //}
        }

        public static string Base64Encode(string plainText)
        {
            var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
            return System.Convert.ToBase64String(plainTextBytes);
        }

        class TokenResponse
        {
            public string access_token { get; set; }
            public string token_type { get; set; }
            public string expires_in { get; set; }
            public string scope { get; set; }
        }
    }

    public interface IGetToken
    {
        string GetToken();
    }

    
}

all docs here: https://github.com/reddit-archive/reddit/wiki/OAuth2

create your bot app here https://www.reddit.com/prefs/apps
so you can use get your appId and Secret.

use this gist for "Application Only OAuth" part