检索显示奇怪行为的日历项目(Outlook API、WebDAV)

我们正在编写一个MS Outlook插件。为了满足我们的业务逻辑，它应该检查某些日期之间的所有约会。我们在从日历中检索所有项目时遇到了一些问题。我们尝试了两种选择：

Outlook API。我们使用MSDN中描述的标准逻辑-按[Start]对项目进行排序，将IncludeRecurrences设置为True，并对日历项目运行Find\Restrict查询，如这里所示。它在我们的测试环境中运行良好。然而，在我们客户的环境中：对于定期约会，开始和结束日期设置为"主约会"的相应日期例如，在某个房间的日历中，我们有一个在1月份创建的每周约会，如果我们试图在8月份找到所有项目，我们会得到该定期约会的四个项目，但它们的开始和结束日期设置为1月份。但是Outlook在同一日历中显示正确的日期。。。
非常糟糕，但我们仍然有WebDAV！我们编写了一个简单的测试应用程序，并尝试使用WebDAV查询日历中的所有项目。当然，我们没有重新发明轮子，只是粘贴了文档中的代码。上一个问题已经解决，但下一个问题出现了：它不会返回大约六个月前创建的重复项目。我一点也不知道——没有限制"旧"物品的参数！

怎么了？我们错过了什么重要的东西吗？

技术详细信息：Exchange 2003、Outlook 2003-2010。坦率地说，如果我们打开缓存交换模式，第一个错误就会消失，但我们无法做到这一点。

var nameSpace = application.GetNamespace("MAPI");
var recepient = nameSpace.CreateRecipient(roomEMail);
recepient.Resolve();
var calendar = nameSpace.GetSharedDefaultFolder(recepient, OlDefaultFolders.olFolderCalendar);
var filter = string.Format("[Start]<'{1}' AND [End]>'{0}'",
  dateFrom.ToString("dd/MM/yyyy HH:mm", CultureInfo.InvariantCulture), dateTo.ToString("dd/MM/yyyy HH:mm", CultureInfo.InvariantCulture)
);
var allItems = calendar.Items;
allItems.Sort("[Start]");
allItems.IncludeRecurrences = true;
var _item = allItems.Find(filter);
while (_item != null) {
  AppointmentItem item = _item as AppointmentItem;
  if (item != null) {
    if (item.Subject != "some const")
      && (item.ResponseStatus != OlResponseStatus.olResponseDeclined)
      && (item.MeetingStatus != OlMeetingStatus.olMeetingReceivedAndCanceled 
      && item.MeetingStatus != OlMeetingStatus.olMeetingCanceled))
    {
      /* Here we copy item to our internal class.
       * We need: Subject, Start, End, Organizer, Recipients, MeetingStatus,
       * AllDayEvent, IsRecurring, RecurrentState, ResponseStatus,
       * GlobalAppointmentID */
    }
  }
  _item = allItems.FindNext();
}

更新1:

使用OutlookSpy进行的其他研究表明，问题不在我们的代码中-当缓存Exchange模式关闭时，API中的开始\结束日期不正确。但Outlook开发人员意识到了这一点，他们在日历中显示了正确的日期！有人知道怎么做吗？

更新2:

Outlook支持升级工程师的回答：

基于此，我可以确认这是我们产品中的一个问题。

可能的原因：

设置IncludeRecurrences后排序

这是我的PowerShell模块代码，用于检索两个日期之间的Outlook项目。

还有一个小应用程序，用于检查更改并发送包括议程更新的电子邮件，当您无法通过移动访问Exchange时，它会很方便。

路径：Documents\WindowsShell\Modules\Outlook\expcal.ps1

Function Get-OutlookCalendar
{
  <#
   .Synopsis
    This function returns appointment items from default Outlook profile
   .Description
    This function returns appointment items from the default Outlook profile. It uses the Outlook interop assembly to use the olFolderCalendar enumeration.
    It creates a custom object consisting of Subject, Start, Duration, Location
    for each appointment item.
   .Example
    Get-OutlookCalendar |
    where-object { $_.start -gt [datetime]"5/10/2011" -AND $_.start -lt `
    [datetime]"5/17/2011" } | sort-object Duration
    Displays subject, start, duration and location for all appointments that
    occur between 5/10/11 and 5/17/11 and sorts by duration of the appointment.
    The sort is the shortest appointment on top.
   .Notes
    NAME:  Get-OutlookCalendar
    AUTHOR: ed wilson, msft
    LASTEDIT: 05/10/2011 08:36:42
    KEYWORDS: Microsoft Outlook, Office
    HSG: HSG-05-24-2011
   .Link
     Http://www.ScriptingGuys.com/blog
 #Requires -Version 2.0
 #>
 echo Starting... Initialize variables
 Add-type -assembly "Microsoft.Office.Interop.Outlook" | out-null
 $olFolders = "Microsoft.Office.Interop.Outlook.OlDefaultFolders" -as [type]
 $olCalendarDetail = "Microsoft.Office.Interop.Outlook.OlCalendarDetail" -as [type]
 echo ... Getting ref to Outlook and Calendar ...
 $outlook = new-object -comobject outlook.application
 $namespace = $outlook.GetNameSpace("MAPI")
 $folder = $namespace.getDefaultFolder($olFolders::olFolderCalendar)
 echo ... Calculating dates ...
 $now = Get-Date -Hour 0 -Minute 00 -Second 00
 echo From $a To $b
 echo ... Getting appointments ...
 $Appointments = $folder.Items
 $Appointments.IncludeRecurrences = $true
 $Appointments.Sort("[Start]")
 echo ... Setting file names ...
 $oldfile = "$env:USERPROFILEoutlook-calendar.bak"
 echo oldfile: $oldfile
 $newfile = "$env:USERPROFILEoutlook-calendar.txt"
 echo newfile: $newfile
 $calfile = "$env:USERPROFILEoutlook-calendar.ics"
 echo calfile: $calfile
 echo ... Exporting calendar to $calfile ...
 $calendarSharing = $folder.GetCalendarExporter()
 $calendarSharing.CalendarDetail = $olCalendarDetail::olFullDetails
 $calendarSharing.IncludeWholeCalendar = $false
 $calendarSharing.IncludeAttachments = $false
 $calendarSharing.IncludePrivateDetails = $true
 $calendarSharing.RestrictToWorkingHours = $false
 $calendarSharing.StartDate = $now.AddDays(-30)
 $calendarSharing.EndDate = $now.AddDays(30)
 echo $calendarSharing
 $calendarSharing.SaveAsICal($calfile)
 echo ... Backing up $newfile into $oldfile ...
 if (!(Test-Path $newfile)) {
  echo "" |Out-File $newfile
 }
 # Backup old export into $oldfile
 if (Test-Path $oldfile) {
  echo "Deleting old backup file $oldfile"
  del $oldfile 
 }
 echo " ... moving $newfile into $oldfile ... "
 move $newfile $oldfile
 echo "... Generating text report to file $newfile ..."
 $Appointments | Where-object { $_.start -gt $now -AND $_.start -lt $now.AddDays(+7) } | 
  Select-Object -Property Subject, Start, Duration, Location, IsRecurring, RecurrenceState  |
  Sort-object Start |
  Out-File $newfile -Width 100
 echo "... Comparing with previous export for changes ..."
 $oldsize = (Get-Item $oldfile).length
 $newsize = (Get-Item $newfile).length
 if ($oldsize -ne $newsize ) {
  echo "!!! Detected calendar change. Sending email..."
  $mail = $outlook.CreateItem(0)
  #2 = high importance email header
  $mail.importance = 2
  $mail.subject = $env:computername + “ Outlook Calendar“
  $mail.Attachments.Add($newfile)
  $mail.Attachments.Add($calfile)
  $text = Get-Content $newfile | Out-String
  $mail.body = “See attached file...“ + $text
  #for multiple email, use semi-colon ; to separate
  $mail.To = “your-email@your-mail-domain.com“
  $mail.Send()
 }
 else {
  echo "No changes detected in Calendar!"
 }

} #end function Get-OutlookCalendar
Function Get-OutlookCalendarTest
{
 echo starting...
 Add-type -assembly "Microsoft.Office.Interop.Outlook" | out-null
 $olFolders = "Microsoft.Office.Interop.Outlook.OlDefaultFolders" -as [type]
 $outlook = new-object -comobject outlook.application
 $namespace = $outlook.GetNameSpace("MAPI")
 $folder = $namespace.getDefaultFolder($olFolders::olFolderCalendar)
 $a = Get-Date -Hour 0 -Minute 00 -Second 00
 $b = (Get-Date -Hour 0 -Minute 00 -Second 00).AddDays(7)
 echo From $a To $b
 $Appointments = $folder.Items
 $Appointments.IncludeRecurrences = $true
 $Appointments.Sort("[Start]")
 $Appointments | Where-object { $_.start -gt $a -AND $_.start -lt $b } | Select-Object -Property IsRecurring, RecurrenceState, Subject, Start, Location
} #end function Get-OutlookCalendarTest

这是调用模块中PowerShell函数的代码：

路径：Documents\WindowsPowers\mono.ps1

Import-Module -Name Outlookexpcal.psm1 -Force
$i=0
#infinite loop for calling connect function   
while(1)
{
   $i = $i +1
   Write-Output "Running task Get-OutlookCalendar ($i)"
   Get-OutlookCalendar
   start-sleep -seconds 300
}

若要运行PowerShell脚本，请使用PowerShell.exe。若要在启动时运行此脚本，请在"%APPDATA%\Microsoft\Windows\Start Menu\Programs\startup\"上使用快捷方式：

C:WindowsSystem32WindowsPowerShellv1.0powershell.exe -ExecutionPolicy Bypass "C:Users%USERNAME%DocumentsWindowsPowerShellmono.ps1"

更新1:

更新2:

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