Exchange ItemID differs from GlobalAppointmentID for Outlook AddIn

问题

The problem I'm having is that the GlobalAppointmentID of a Outlook Appointement created using a Outlook FormRegion differs from that of the ItemID when using EWS Managed API.

I'm creating an Outlook addIn that allows users to add customer and project information to a meeting. The addIn also stores the appointment ID and meeting data in a database and a service will periodically check the ID to update the appointment data.

Ok so here is how I use the AddIn:

Outlook.AppointmentItem appointement = (Outlook.AppointmentItem)this.OutlookItem;

appointement.Save();

string ExchangeID = appointement.GlobalAppointmentID;

Here the GlobalAppointmentID is: 040000008200E00074C5B7101A82E0080000000060CADC517255CE01000000000000000010000000847A9CD89052DC49BA28DC8AAFBBB4BA

But the EWS managed API expects something like: AAMkADViNTJlZTg5LTIwYWMtNGY3My1hOWZiLTZiOTM3OTk3Nzk1YQBGAAAAAAAEfbmEhAMsRZur9AvsphPMBwCysaa5HwPMRanSoWSnKrckAAAAXAL/AACysaa5HwPMRanSoWSnKrckAAAAXCxwAAA=

to Bind a AppointmentItem from the service. There is an option to solve this but only using auto-generated proxies and not the Managed API link to proxy solution

So is there a way to either from the EWS Managed API search for GlobalAppointementID or from an Outlook AddIn retrieve the ItemID?

回答1:

The IDs can be represented different ways. Outlook uses the first form, EWS the second.

To convert, use the ConvertID method.

Here are example request/response calls in raw SOAP format (with these examples, you should be able to implement them with the API):
Outlook HexEntryID to Exchange EWSID

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:mes="http://schemas.microsoft.com/exchange/services/2006/messages">
   <soapenv:Header>
      <typ:RequestServerVersion Version="Exchange2007_SP1"/>
      <typ:MailboxCulture>en-US</typ:MailboxCulture>
   </soapenv:Header>
   <soapenv:Body>
      <mes:ConvertId DestinationFormat="EwsId">
         <mes:SourceIds>
            <typ:AlternateId Format="HexEntryId" Id="0000000068C940C[snip]63136C3D0000" Mailbox="user@domain.com"/>
         </mes:SourceIds>
      </mes:ConvertId>
   </soapenv:Body>
</soapenv:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="14" MinorVersion="0" MajorBuildNumber="722" MinorBuildNumber="0" Version="Exchange2010" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:ConvertIdResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:ConvertIdResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:AlternateId xsi:type="t:AlternateIdType" Format="EwsId" Id="AQMkADkyZTQxNjUzL[snip]YxNsPQAAAA==" Mailbox="user@domain.com"/>
            </m:ConvertIdResponseMessage>
         </m:ResponseMessages>
      </m:ConvertIdResponse>
   </s:Body>
</s:Envelope>

Exchange EWSID to Outlook HexEntryID:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:mes="http://schemas.microsoft.com/exchange/services/2006/messages">
   <soapenv:Header>
      <typ:RequestServerVersion Version="Exchange2007_SP1"/>
   </soapenv:Header>
   <soapenv:Body>
      <mes:ConvertId DestinationFormat="HexEntryId">
         <mes:SourceIds>
            <typ:AlternateId Format="EwsId" Id="AQMkADkyZTQxNjUzLTcwZTQtNGRlNS04M2VmLWMxYmIBNWJi[snip]YxNsPQAAAA==" Mailbox="user@domain.com"/>
         </mes:SourceIds>
      </mes:ConvertId>
   </soapenv:Body>
</soapenv:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="14" MinorVersion="0" MajorBuildNumber="722" MinorBuildNumber="0" Version="Exchange2010" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:ConvertIdResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:ConvertIdResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:AlternateId xsi:type="t:AlternateIdType" Format="HexEntryId" Id="0000000068C940[snip]136C3D0000" Mailbox="user@domain.com"/>
            </m:ConvertIdResponseMessage>
         </m:ResponseMessages>
      </m:ConvertIdResponse>
   </s:Body>
</s:Envelope>

Note that there is a difference in using these two types of ID's when using recurring appointments and occurrences:
Where EWS IDs differ for every single occurrence, the Outlook hex entry ID are identical for all:

FindItem response for a recurring event with one exception - note the different ItemIDs:

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="14" MinorVersion="0" MajorBuildNumber="722" MinorBuildNumber="0" Version="Exchange2010" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:FindItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:FindItemResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:RootFolder TotalItemsInView="10" IncludesLastItemInRange="true">
                  <t:Items>
                     <t:CalendarItem>
                        <t:ItemId Id="AAMkADkyZTQxNjUzLTcwZTQtNGRlNS04M2VmLWMxYmJiNWJiNTBlNgFRAAgI0B8WRv2AAEYAAAAAgq3iY5OVdkmtnHS/lxCbwgcAhKYXWHH/akCFAFNVQGZiCgAAAAAAIQAAhKYXWHH/akCFAFNVQGZiCgACKa9YrQAAEA==" ChangeKey="DwAAABYAAACEphdYcf9qQIUAU1VAZmIKAAIpr2i3"/>
                        <t:ItemClass>IPM.Appointment.Occurrence</t:ItemClass>
                        <t:Subject>Recurring appointment with one exception</t:Subject>
                        <t:Sensitivity>Normal</t:Sensitivity>
                        <t:DateTimeCreated>2013-05-22T06:51:26Z</t:DateTimeCreated>
                        <t:LastModifiedTime>2013-05-22T06:52:20Z</t:LastModifiedTime>
                        <t:Start>2013-05-15T10:30:00Z</t:Start>
                        <t:End>2013-05-15T11:00:00Z</t:End>
                        <t:IsRecurring>true</t:IsRecurring>
                        <t:CalendarItemType>Occurrence</t:CalendarItemType>
                     </t:CalendarItem>
                     <t:CalendarItem>
                        <t:ItemId Id="AAMkADkyZTQxNjUzLTcwZTQtNGRlNS04M2VmLWMxYmJiNWJiNTBlNgFRAAgI0B/fcWdAAEYAAAAAgq3iY5OVdkmtnHS/lxCbwgcAhKYXWHH/akCFAFNVQGZiCgAAAAAAIQAAhKYXWHH/akCFAFNVQGZiCgACKa9YrQAAEA==" ChangeKey="DwAAABYAAACEphdYcf9qQIUAU1VAZmIKAAIpr2i3"/>
                        <t:ItemClass>IPM.OLE.CLASS.{00061055-0000-0000-C000-000000000046}</t:ItemClass>
                        <t:Subject>The exception</t:Subject>
                        <t:Sensitivity>Normal</t:Sensitivity>
                        <t:DateTimeCreated>2013-05-22T06:51:58Z</t:DateTimeCreated>
                        <t:LastModifiedTime>2013-05-22T06:52:20Z</t:LastModifiedTime>
                        <t:Start>2013-05-16T12:00:00Z</t:Start>
                        <t:End>2013-05-16T12:30:00Z</t:End>
                        <t:IsRecurring>true</t:IsRecurring>
                        <t:CalendarItemType>Exception</t:CalendarItemType>
                     </t:CalendarItem>
                     [snip]
                     Other occurrences removed
                     [snip]
                  </t:Items>
               </m:RootFolder>
            </m:FindItemResponseMessage>
         </m:ResponseMessages>
      </m:FindItemResponse>
   </s:Body>
</s:Envelope>

Conversion for EWSID to HexEntryID for both these ItemIDs results in

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="14" MinorVersion="0" MajorBuildNumber="722" MinorBuildNumber="0" Version="Exchange2010" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:ConvertIdResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:ConvertIdResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:AlternateId xsi:type="t:AlternateIdType" Format="HexEntryId" Id="0000000082ADE26393957649AD9C74BF97109BC2070084A6175871FF6A40850053554066620A000000000021000084A6175871FF6A40850053554066620A000229AF58AD0000" Mailbox="user@domain.com"/>
            </m:ConvertIdResponseMessage>
         </m:ResponseMessages>
      </m:ConvertIdResponse>
   </s:Body>
</s:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="14" MinorVersion="0" MajorBuildNumber="722" MinorBuildNumber="0" Version="Exchange2010" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:ConvertIdResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:ConvertIdResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:AlternateId xsi:type="t:AlternateIdType" Format="HexEntryId" Id="0000000082ADE26393957649AD9C74BF97109BC2070084A6175871FF6A40850053554066620A000000000021000084A6175871FF6A40850053554066620A000229AF58AD0000" Mailbox="user@domain.com"/>
            </m:ConvertIdResponseMessage>
         </m:ResponseMessages>
      </m:ConvertIdResponse>
   </s:Body>
</s:Envelope>

回答2:

Outlook appointment id wraps external (iCal) appointment ids. You need to parse it: http://msdn.microsoft.com/en-us/library/ee157690(v=exchg.80).aspx

来源：https://stackoverflow.com/questions/16665289/exchange-itemid-differs-from-globalappointmentid-for-outlook-addin