问题
How can I get all items from a specific calendar (for a specific date). Lets say for instance that I have a calendar with a recurring item every Monday evening. When I request all items like this:
CalendarItems = CalendarFolder.Items;
CalendarItems.IncludeRecurrences = true;
I only get 1 item...
Is there an easy way to get all items (main item + derived items) from a calendar? In my specific situation it can be possible to set a date limit but it would be cool just to get all items (my recurring items are time limited themselves).
I'm using the Microsoft Outlook 12 Object library (Microsoft.Office.Interop.Outlook).
回答1:
I believe that you must Restrict or Find in order to get recurring appointments, otherwise Outlook won't expand them. Also, you must Sort by Start before setting IncludeRecurrences.
回答2:
I've studied the docs and this is my result: I've put a time limit of one month hard-coded, but this is just an example.
public void GetAllCalendarItems()
{
Microsoft.Office.Interop.Outlook.Application oApp = null;
Microsoft.Office.Interop.Outlook.NameSpace mapiNamespace = null;
Microsoft.Office.Interop.Outlook.MAPIFolder CalendarFolder = null;
Microsoft.Office.Interop.Outlook.Items outlookCalendarItems = null;
oApp = new Microsoft.Office.Interop.Outlook.Application();
mapiNamespace = oApp.GetNamespace("MAPI"); ;
CalendarFolder = mapiNamespace.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderCalendar);
outlookCalendarItems = CalendarFolder.Items;
outlookCalendarItems.IncludeRecurrences = true;
foreach (Microsoft.Office.Interop.Outlook.AppointmentItem item in outlookCalendarItems)
{
if (item.IsRecurring)
{
Microsoft.Office.Interop.Outlook.RecurrencePattern rp = item.GetRecurrencePattern();
DateTime first = new DateTime(2008, 8, 31, item.Start.Hour, item.Start.Minute, 0);
DateTime last = new DateTime(2008, 10, 1);
Microsoft.Office.Interop.Outlook.AppointmentItem recur = null;
for (DateTime cur = first; cur <= last; cur = cur.AddDays(1))
{
try
{
recur = rp.GetOccurrence(cur);
MessageBox.Show(recur.Subject + " -> " + cur.ToLongDateString());
}
catch
{ }
}
}
else
{
MessageBox.Show(item.Subject + " -> " + item.Start.ToLongDateString());
}
}
}
回答3:
I wrote similar code, but then found the export functionality:
Application outlook;
NameSpace OutlookNS;
outlook = new ApplicationClass();
OutlookNS = outlook.GetNamespace("MAPI");
MAPIFolder f = OutlookNS.GetDefaultFolder(OlDefaultFolders.olFolderCalendar);
CalendarSharing cs = f.GetCalendarExporter();
cs.CalendarDetail = OlCalendarDetail.olFullDetails;
cs.StartDate = new DateTime(2011, 11, 1);
cs.EndDate = new DateTime(2011, 12, 31);
cs.SaveAsICal("c:\\temp\\cal.ics");
回答4:
LinqPad snipped that works for me:
//using Microsoft.Office.Interop.Outlook
Application a = new Application();
Items i = a.Session.GetDefaultFolder(OlDefaultFolders.olFolderCalendar).Items;
i.IncludeRecurrences = true;
i.Sort("[Start]");
i = i.Restrict(
"[Start] >= '10/1/2013 12:00 AM' AND [End] < '10/3/2013 12:00 AM'");
var r =
from ai in i.Cast<AppointmentItem>()
select new {
ai.Categories,
ai.Start,
ai.Duration
};
r.Dump();
回答5:
If you need want to access the shared folder from your friend, then you can set your friend as the recipient. Requirement: his calendar must be shared first.
// Set recepient
Outlook.Recipient oRecip = (Outlook.Recipient)oNS.CreateRecipient("abc@yourmail.com");
// Get calendar folder
Outlook.MAPIFolder oCalendar = oNS.GetSharedDefaultFolder(oRecip, Outlook.OlDefaultFolders.olFolderCalendar);
回答6:
There is no need to expand recurring items manually. Just ensure you sort the items before using IncludeRecurrences.
Here is VBA example:
tdystart = VBA.Format(#8/1/2012#, "Short Date")
tdyend = VBA.Format(#8/31/2012#, "Short Date")
Dim folder As MAPIFolder
Set appointments = folder.Items
appointments.Sort "[Start]" ' <-- !!! Sort is a MUST
appointments.IncludeRecurrences = True ' <-- This will expand reccurent items
Set app = appointments.Find("[Start] >= """ & tdystart & """ and [Start] <= """ & tdyend & """")
While TypeName(app) <> "Nothing"
MsgBox app.Start & " " & app.Subject
Set app = appointments.FindNext
Wend
回答7:
public void GetAllCalendarItems()
{
DataTable sample = new DataTable(); //Sample Data
sample.Columns.Add("Subject", typeof(string));
sample.Columns.Add("Location", typeof(string));
sample.Columns.Add("StartTime", typeof(DateTime));
sample.Columns.Add("EndTime", typeof(DateTime));
sample.Columns.Add("StartDate", typeof(DateTime));
sample.Columns.Add("EndDate", typeof(DateTime));
sample.Columns.Add("AllDayEvent", typeof(bool));
sample.Columns.Add("Body", typeof(string));
listViewContacts.Items.Clear();
oApp = new Outlook.Application();
oNS = oApp.GetNamespace("MAPI");
oCalenderFolder = oNS.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderCalendar);
outlookCalendarItems = oCalenderFolder.Items;
outlookCalendarItems.IncludeRecurrences = true;
// DataTable sample = new DataTable();
foreach (Microsoft.Office.Interop.Outlook.AppointmentItem item in outlookCalendarItems)
{
DataRow row = sample.NewRow();
row["Subject"] = item.Subject;
row["Location"] = item.Location;
row["StartTime"] = item.Start.TimeOfDay.ToString();
row["EndTime"] = item.End.TimeOfDay.ToString();
row["StartDate"] = item.Start.Date;
row["EndDate"] = item.End.Date;
row["AllDayEvent"] = item.AllDayEvent;
row["Body"] = item.Body;
sample.Rows.Add(row);
}
sample.AcceptChanges();
foreach (DataRow dr in sample.Rows)
{
ListViewItem lvi = new ListViewItem(dr["Subject"].ToString());
lvi.SubItems.Add(dr["Location"].ToString());
lvi.SubItems.Add(dr["StartTime"].ToString());
lvi.SubItems.Add(dr["EndTime"].ToString());
lvi.SubItems.Add(dr["StartDate"].ToString());
lvi.SubItems.Add(dr["EndDate"].ToString());
lvi.SubItems.Add(dr["AllDayEvent"].ToString());
lvi.SubItems.Add(dr["Body"].ToString());
this.listViewContacts.Items.Add(lvi);
}
oApp = null;
oNS = null;
}
回答8:
Try this:
public List<AdxCalendarItem> GetAllCalendarItems()
{
Outlook.Application OutlookApp = new Outlook.Application();
List<AdxCalendarItem> result = new List<AdxCalendarItem>();
Outlook._NameSpace session = OutlookApp.Session;
if (session != null)
try
{
object stores = session.GetType().InvokeMember("Stores", BindingFlags.GetProperty, null, session, null);
if (stores != null)
try
{
int count = (int)stores.GetType().InvokeMember("Count", BindingFlags.GetProperty, null, stores, null);
for (int i = 1; i <= count; i++)
{
object store = stores.GetType().InvokeMember("Item", BindingFlags.GetProperty, null, stores, new object[] { i });
if (store != null)
try
{
Outlook.MAPIFolder calendar = null;
try
{
calendar = (Outlook.MAPIFolder)store.GetType().InvokeMember("GetDefaultFolder", BindingFlags.GetProperty, null, store, new object[] { Outlook.OlDefaultFolders.olFolderCalendar });
}
catch
{
continue;
}
if (calendar != null)
try
{
Outlook.Folders folders = calendar.Folders;
try
{
Outlook.MAPIFolder subfolder = null;
for (int j = 1; j < folders.Count + 1; j++)
{
subfolder = folders[j];
try
{
// add subfolder items
result.AddRange(GetAppointmentItems(subfolder));
}
finally
{ if (subfolder != null) Marshal.ReleaseComObject(subfolder); }
}
}
finally
{ if (folders != null) Marshal.ReleaseComObject(folders); }
// add root items
result.AddRange(GetAppointmentItems(calendar));
}
finally { Marshal.ReleaseComObject(calendar); }
}
finally { Marshal.ReleaseComObject(store); }
}
}
finally { Marshal.ReleaseComObject(stores); }
}
finally { Marshal.ReleaseComObject(session); }
return result;
}
List<AdxCalendarItem> GetAppointmentItems(Outlook.MAPIFolder calendarFolder)
{
List<AdxCalendarItem> result = new List<AdxCalendarItem>();
Outlook.Items calendarItems = calendarFolder.Items;
try
{
calendarItems.IncludeRecurrences = true;
Outlook.AppointmentItem appointment = null;
for (int j = 1; j < calendarItems.Count + 1; j++)
{
appointment = calendarItems[j] as Outlook.AppointmentItem;
try
{
AdxCalendarItem item = new AdxCalendarItem(
calendarFolder.Name,
appointment.Subject,
appointment.Location,
appointment.Start,
appointment.End,
appointment.Start.Date,
appointment.End.Date,
appointment.AllDayEvent,
appointment.Body);
result.Add(item);
}
finally
{
{ Marshal.ReleaseComObject(appointment); }
}
}
}
finally { Marshal.ReleaseComObject(calendarItems); }
return result;
}
}
public class AdxCalendarItem
{
public string CalendarName;
public string Subject;
public string Location;
public DateTime StartTime;
public DateTime EndTime;
public DateTime StartDate;
public DateTime EndDate;
public bool AllDayEvent;
public string Body;
public AdxCalendarItem(string CalendarName, string Subject, string Location, DateTime StartTime, DateTime EndTime,
DateTime StartDate, DateTime EndDate, bool AllDayEvent, string Body)
{
this.CalendarName = CalendarName;
this.Subject = Subject;
this.Location = Location;
this.StartTime = StartTime;
this.EndTime = EndTime;
this.StartDate = StartDate;
this.EndDate = EndDate;
this.AllDayEvent = AllDayEvent;
this.Body = Body;
}
}
回答9:
Microsoft.Office.Interop.Outlook.Application oApp = null;
Microsoft.Office.Interop.Outlook.NameSpace mapiNamespace = null;
Microsoft.Office.Interop.Outlook.MAPIFolder CalendarFolder = null;
Microsoft.Office.Interop.Outlook.Items outlookCalendarItems = null;
oApp = new Microsoft.Office.Interop.Outlook.Application();
mapiNamespace = oApp.GetNamespace("MAPI"); ;
CalendarFolder = mapiNamespace.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderCalendar);
outlookCalendarItems = CalendarFolder.Items;
outlookCalendarItems.IncludeRecurrences = true;
foreach (Microsoft.Office.Interop.Outlook.AppointmentItem item in outlookCalendarItems)
{
if (item.IsRecurring)
{
Microsoft.Office.Interop.Outlook.RecurrencePattern rp = item.GetRecurrencePattern();
// get all date
DateTime first = new DateTime( item.Start.Hour, item.Start.Minute, 0);
DateTime last = new DateTime();
Microsoft.Office.Interop.Outlook.AppointmentItem recur = null;
for (DateTime cur = first; cur <= last; cur = cur.AddDays(1))
{
try
{
recur = rp.GetOccurrence(cur);
MessageBox.Show(recur.Subject + " -> " + cur.ToLongDateString());
}
catch
{ }
}
}
else
{
MessageBox.Show(item.Subject + " -> " + item.Start.ToLongDateString());
}
}
}
it is working I try it but you need to add reference about Microsoft outlook
回答10:
I found this articel very useful: https://docs.microsoft.com/en-us/office/client-developer/outlook/pia/how-to-search-and-obtain-appointments-in-a-time-range
It demonstrates how to get calendar entries in a specified time range. It worked for me. Here is the source code from the articel for your convenience :)
using Outlook = Microsoft.Office.Interop.Outlook;
private void DemoAppointmentsInRange()
{
Outlook.Folder calFolder = Application.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderCalendar)
as Outlook.Folder;
DateTime start = DateTime.Now;
DateTime end = start.AddDays(5);
Outlook.Items rangeAppts = GetAppointmentsInRange(calFolder, start, end);
if (rangeAppts != null)
{
foreach (Outlook.AppointmentItem appt in rangeAppts)
{
Debug.WriteLine("Subject: " + appt.Subject
+ " Start: " + appt.Start.ToString("g"));
}
}
}
/// <summary>
/// Get recurring appointments in date range.
/// </summary>
/// <param name="folder"></param>
/// <param name="startTime"></param>
/// <param name="endTime"></param>
/// <returns>Outlook.Items</returns>
private Outlook.Items GetAppointmentsInRange(
Outlook.Folder folder, DateTime startTime, DateTime endTime)
{
string filter = "[Start] >= '"
+ startTime.ToString("g")
+ "' AND [End] <= '"
+ endTime.ToString("g") + "'";
Debug.WriteLine(filter);
try
{
Outlook.Items calItems = folder.Items;
calItems.IncludeRecurrences = true;
calItems.Sort("[Start]", Type.Missing);
Outlook.Items restrictItems = calItems.Restrict(filter);
if (restrictItems.Count > 0)
{
return restrictItems;
}
else
{
return null;
}
}
catch { return null; }
}
回答11:
calendarFolder =
mapiNamespace.GetDefaultFolder(
Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderCalendar);
来源：https://stackoverflow.com/questions/90899/net-get-all-outlook-calendar-items