CodeseniorSoftware Tutorials

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Sheets.v4;
using Google.Apis.Sheets.v4.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System.IO;
using System.Threading;

namespace DgEeUI.Utils
{
    public class GoogleSheetUtil
    {
        private string _webRootPath;
        private string _spreadSheetId;
    
        public GoogleSheetUtil(string webRootPath, string spreadSheetId)
        {
            _webRootPath = webRootPath;
            _spreadSheetId = spreadSheetId;
        }
        string[] Scopes = { SheetsService.Scope.Spreadsheets };
        string ApplicationName = "Google Sheets API .NET Quickstart";

        public void RegisterUserInfo(string email,string name)
        {
            UserCredential credential;

            using (var stream =
                new FileStream(_webRootPath + "\\Content\\GoogleSheetAuth\\" + "credentials.json", FileMode.Open, FileAccess.Read))
            {
                // The file token.json stores the user's access and refresh tokens, and is created
                // automatically when the authorization flow completes for the first time.
                string credPath = _webRootPath + "\\Content\\GoogleSheetAuth\\"+"token.json";
                credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    Scopes,
                    "user",
                    CancellationToken.None,
                    new FileDataStore(credPath, true)).Result;
                Console.WriteLine("Credential file saved to: " + credPath);
            }

            // Create Google Sheets API service.
            var service = new SheetsService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = ApplicationName,
            });

            // Define request parameters.
            String spreadsheetId = _spreadSheetId;
            List<ValueRange> updateData = new List<ValueRange>();
            var dataValueRange = new ValueRange();
            dataValueRange.Range = GetRange(service,spreadsheetId);
            var rows = new List<IList<object>>();
            var values = new List<object>();
            values.Add(name);
            values.Add(email);
            rows.Add(values);
            dataValueRange.Values = rows;
            updateData.Add(dataValueRange);

            BatchUpdateValuesRequest requestBody = new BatchUpdateValuesRequest();
            string valueInputOption = "USER_ENTERED";
            requestBody.ValueInputOption = valueInputOption;
            requestBody.Data = updateData;

            var request = service.Spreadsheets.Values.BatchUpdate(requestBody, spreadsheetId);

            BatchUpdateValuesResponse response = request.Execute();
            Console.WriteLine(response);
        }
        protected static string GetRange(SheetsService service,string sheetId)
        {
            // Define request parameters.
            String spreadsheetId = sheetId;
            String range = "A:A";

            SpreadsheetsResource.ValuesResource.GetRequest getRequest =
                       service.Spreadsheets.Values.Get(spreadsheetId, range);

            ValueRange getResponse = getRequest.Execute();
            IList<IList<Object>> getValues = getResponse.Values;

            int currentCount = getValues.Count() + 1;

            String newRange = "A" + currentCount + ":B";

            return newRange;
        }
    }
}