透過 Exchange Web Service (EWS) 來取得使用者的會議資訊

前言

要如何透過 Exchange Web Service (EWS) 來取得使用者的會議資訊呢?
可以參考 how to get the calendar items from other users with EWS API Outlook
透過 FolderId 及 CalendarFolder.Bind 來達到。

實作

1.專案請加入 Microsoft.Exchange.WebServices Nuget 套件及 System.DirectoryServices 參考。

2.接下來 EWS 的 Web Service URL 及設定連線人員帳/密，就可以取得使用者的會議資訊，如下，

using Microsoft.Exchange.WebServices.Data;
using System.Collections.ObjectModel;

var adUser = "要查的User";
var adUserPwd = "password";
var domainName = "你的exchangeDomain";
var dateFormat = "yyyy/MM/dd";
var timeFormat = "HH:mm:ss";

var service = new ExchangeService();
service.Credentials = new WebCredentials(adUser, adUserPwd);
//service.TraceEnabled = true;
//service.TraceFlags = TraceFlags.All;
var serverUrl = @"https://你的exchangeFQDN/EWS/Exchange.asmx";
service.Url = new Uri(serverUrl);
var dateFormat = "yyyy/MM/dd";
var timeFormat = "HH:mm:ss";
//取得某人/某天的行事曆
var user1Email = $"{adUser}@{domainName}";
DateTime from = new DateTime(2023, 5, 19);
DateTime to = new DateTime(2023, 5, 19, 23, 59, 59);
var user1Appointments = GetAppointments(service, user1Email, from, to);
Console.WriteLine($"*** {user1Email} 從 {from.ToString(dateFormat)}~{to.ToString(timeFormat)} 的行事曆資料如下，");
foreach (var a in user1Appointments)
{
    Console.Write("Subject: " + a.Subject.ToString() + " ");
    Console.Write("Start: " + a.Start.ToString($"{dateFormat} {timeFormat}") + " ");
    Console.Write("End: " + a.End.ToString($"{dateFormat} {timeFormat}"));
    //Console.Write("TimeZone: " + a.TimeZone);
    Console.WriteLine();
}


static Collection<Appointment> GetAppointments(ExchangeService service
    ,string email, DateTime from, DateTime to)
{
    var durationView = new CalendarView(from, to);
    var folderIdFromCalendar = new FolderId(WellKnownFolderName.Calendar, email);
    CalendarFolder calendar = CalendarFolder.Bind(service, folderIdFromCalendar, new PropertySet());
    FindItemsResults<Appointment> findResults = calendar.FindAppointments(durationView);
    return findResults.Items;
}

輸出如下，

參考資源

how to get the calendar items from other users with EWS API Outlook
Get appointments and meetings by using EWS in Exchange