如何使用 c# 和 Google API 在 Google 日历中创建事件？

Question

更新：我解决了这个问题并在下面发布了解决方案作为答案！ ;)

我需要创建一个事件并使用 Google API 将其添加到 Google 日历。

目前我只知道如何从 Google 日历中获取我拥有的所有活动。 这是我到目前为止所得到的：

using Google.Apis.Auth.OAuth2;
using Google.Apis.Calendar.v3;
using Google.Apis.Calendar.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;


namespace CalendarQuickstart
{
    class Program
    {
        // If modifying these scopes, delete your previously saved credentials
        // at ~/.credentials/calendar-dotnet-quickstart.json
        static string[] Scopes = { CalendarService.Scope.CalendarReadonly };
        static string ApplicationName = "Google Calendar API .NET Quickstart";

        static void Main(string[] args)
        {
            UserCredential credential;

            using (var stream =
                new FileStream("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 = "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 Calendar API service.
            var service = new CalendarService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = ApplicationName,
            });

            // Define parameters of request.
            EventsResource.ListRequest request = service.Events.List("primary");
            request.TimeMin = DateTime.Now;
            request.ShowDeleted = false;
            request.SingleEvents = true;
            request.MaxResults = 10;
            request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;

            // List events.
            Events events = request.Execute();
            Console.WriteLine("Upcoming events:");
            if (events.Items != null && events.Items.Count > 0)
            {
                foreach (var eventItem in events.Items)
                {
                    string when = eventItem.Start.DateTime.ToString();
                    if (String.IsNullOrEmpty(when))
                    {
                        when = eventItem.Start.Date;
                    }
                    Console.WriteLine("{0} ({1})", eventItem.Summary, when);
                }
            }
            else
            {
                Console.WriteLine("No upcoming events found.");
            }
            Console.Read();
        }
    }
}

我正在尝试做的必须看起来像这样：

        var ev = new Event();
        EventDateTime start = new EventDateTime();
        start.DateTime = new DateTime(2019, 3, 11, 10, 0, 0);

        EventDateTime end = new EventDateTime();
        end.DateTime = new DateTime(2019, 3, 11, 10, 30, 0);


        ev.Start = start;
        ev.End = end;
        ev.Description = "Description...";

        events.Items.Insert(0, ev);

我花了一整天的时间搜索任何 .NET 示例，但一无所获。 任何帮助表示赞赏！ ;)

Answer 1

我已经解决了这个问题！ 所以在构建项目之前改变

static string[] Scopes = { CalendarService.Scope.CalendarReadonly };

到

static string[] Scopes = { CalendarService.Scope.Calendar };

如果您已经构建了解决方案，则删除凭据.json文件，然后重新加载它。 添加事件的代码在这里：

    var ev = new Event();
    EventDateTime start = new EventDateTime();
    start.DateTime = new DateTime(2019, 3, 11, 10, 0, 0);

    EventDateTime end = new EventDateTime();
    end.DateTime = new DateTime(2019, 3, 11, 10, 30, 0);


    ev.Start = start;
    ev.End = end;
    ev.Summary = "New Event";
    ev.Description = "Description...";

    var calendarId = "primary";
    Event recurringEvent = service.Events.Insert(ev, calendarId).Execute();
    Console.WriteLine("Event created: %s\n", e.HtmlLink);

这是我第一次尝试使用 Google API，所以不要评判我 ;) 希望有一天能对某人有所帮助！

注意：您还需要从 \\bin\\debug 文件夹中删除“token.json”文件夹

Answer 2

这几天我尝试做同样的事情，我使用了相同的代码，但就在第一部分（读取事件）中，系统出现了一个异常“System.InvalidOperationException：'至少一个客户端机密（已安装或 Web）应该是set'" 调用方法 credential = GoogleWebAuthorizationBroker.AuthorizeAsync

有人解决了这个问题吗？