如何return EWS 日历预约为JSON？

Question

我正在尝试使用 EWS Managed API 获取日历事件。我使用了 Microsoft 在其网站上提供的示例。

 public class CalendarController : ApiController
        {
            public static ExchangeService service;
            // GET api/calendar
            public IEnumerable<string> Get()
            {
                // Initialize values for the start and end times, and the number of appointments to retrieve.
                DateTime startDate = DateTime.Now;
                DateTime endDate = startDate.AddDays(30);
                const int NUM_APPTS = 50;

                service = new ExchangeService(ExchangeVersion.Exchange2013_SP1)
                {
                    Credentials = new NetworkCredential("******@example.com", "******"),
                    Url = new Uri("url to ews")
                };

                // Initialize the calendar folder object with only the folder ID. 
                CalendarFolder calendar = CalendarFolder.Bind(service, WellKnownFolderName.Calendar, new PropertySet());

                // Set the start and end time and number of appointments to retrieve.
                CalendarView cView = new CalendarView(startDate, endDate, NUM_APPTS);

                // Limit the properties returned to the appointment's subject, start time, and end time.
                cView.PropertySet = new PropertySet(AppointmentSchema.Subject, AppointmentSchema.Start, AppointmentSchema.End);

                System.Diagnostics.Debug.WriteLine("getting appointments now");
                // Retrieve a collection of appointments by using the calendar view.
                FindItemsResults<Appointment> appointments = calendar.FindAppointments(cView);
                System.Diagnostics.Debug.WriteLine(appointments.TotalCount);
                System.Diagnostics.Debug.WriteLine(appointments.ToArray());

                List<string> appts = new List<string>();

                foreach (Appointment a in appointments)
                {
                    appts.Add(a.Id.ToString());
                    appts.Add(a.Subject);
                    appts.Add(a.Start.ToString());
                    appts.Add(a.End.ToString());            
                }

                //var appts = appointments.ToList();
                return appts;
                //return Json(appts, JsonRequestBehavior.AllowGet);
            }

我正在使用 WebAPI 获取 FullCalendar 的结果。但是，它不会以键值形式 return json 中的数据。我也尝试过使用字典，但是这也产生了关于对象名称已经存在的错误；我添加了 apts.Add("ID", a.Id.tostring())。如何使用对象名称和值将其转换为 JSON 格式的 return？

Answer 1

好吧，需要说明的是，这并不是关于 EWS 或日历约会，而是关于序列化从 WebApi 返回的对象。

您在 JSON 中没有看到属性名称 return 的原因是因为您没有 return 具有属性的对象，您 returned a List<string> 或者如果你愿意，一个字符串数组。正如您在评论中所说，return 值如下所示：

["AAM","A subject","1/5/2015 12:00:00 AM","1/6/2015 12:00:00 AM" .. ]

如果您想要 return 具有属性的对象，您可以 return Appointment 对象而不是 List<string>，或者如果您需要 return 不止一个对象你可以改成IEnumerable<Appointment>。如果您不想 return Appointment 对象，因为它包含额外的信息，那么创建您自己的 class 和 return 该对象。

我修改了您的代码以使其更通用，但它看起来像这样：

public IEnumerable<Appointment> Get()
{
    // Initialize values for the start and end times, and the number of appointments to retrieve.
    DateTime startDate = DateTime.Now;
    DateTime endDate = startDate.AddDays(30);
    const int NUM_APPTS = 50;

    // Snipped for brevity

    // Retrieve a collection of appointments by using the calendar view.
    FindItemsResults<Appointment> appointments = calendar.FindAppointments(cView);

    return  appointments.AsEnumerable();
}

如何return EWS 日历预约为JSON？

How to return EWS calendar appointment as JSON?

c#

json

exchange-server

exchangewebservices