How to login to Google API with Service Account in C# - Invalid Credentials

Question

I\'m beating myself bloody trying to get a simple service acccount login to work in C#, to Google API and Google Analytics. My company is already getting data into Analytics, an

Answer 1

FOR 2020, the call is made as follows:

using System;
using System.Collections.Generic;
using System.Web.Mvc;
using Google.Apis.Services;
using Google.Apis.Auth.OAuth2;
using System.IO;
using Google.Apis.Sheets.v4;
using Google.Apis.Sheets.v4.Data;

namespace SistemasInfinitos.Controllers.Google.Apis.Sample.MVC4
{
    public class SpreadsheetseController : Controller
    { 
        public ActionResult IndexAPI()
        {
            //accede a las credenciales
            var stream = new FileStream(Server.MapPath("~/quickstart2-9aaf.json"),
                FileMode.Open
               // FileAccess.Read//SOLO LECTURA
                );
            //abre las credenciales
            var credentials = GoogleCredential.FromStream(stream);

            //virifica las credenciales
            if (credentials.IsCreateScopedRequired)
            {
                credentials = credentials.CreateScoped(new string[] { SheetsService.Scope.Spreadsheets });
            }
            ///inicializa la api
        var service = new SheetsService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credentials,
                ApplicationName = "SistemasInfinitos",
            });

            // Define los parametros.  
            String spreadsheetId = "1MKxeqXV5UEMXU2yBe_xi0nwjooLhNN6Vk";
            String range = "Sheet1";
            SpreadsheetsResource.ValuesResource.GetRequest request =service.Spreadsheets.Values.Get(spreadsheetId, range);
            // imprime   
            ValueRange response = request.Execute();
            IList> values = response.Values;
            ViewBag.List = values;
            return View();
        }
    }
}

and View

@{
    ViewBag.Title = "IndexAPI";
}


    
Read Data From Google Live sheet
    
            @{
                foreach (var item in ViewBag.List)
                {
                    

                }
            }
        

        

            

                

                    id
                
                

                    Name
                
            
        
        

                        
@item[0]
                        
@item[1]