用C代码在Outlook中为OOO邮件设置起始日期和截止日期

下面的代码片段检查OOO是否已关闭。如果关闭，将启用OOO

foreach (Microsoft.Office.Interop.Outlook.Store store in outlookNameSpace.Stores)

{

if (store.ExchangeStoreType==    Microsoft.Office.Interop.Outlook.OlExchangeStoreType.olPrimaryExchangeMailbox)
 {

     bool OOOStatus = store.PropertyAccessor.GetProperty("http://schemas.microsoft.com/mapi/proptag/0x661D000B");


     if (OOOStatus == false)
     {

     store.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x661D000B", true); // false to turn off OOF


                        const string DefaultOOFMessageInternal = "Hi,\n\nThanks for writing. I am OOO today ! \nThank You";

                        Outlook.StorageItem InternalOOFMessage;
                        InternalOOFMessage = inbox.GetStorage("IPM.Note.Rules.OofTemplate.Microsoft", Outlook.OlStorageIdentifierType.olIdentifyByMessageClass);
                        InternalOOFMessage.Body = DefaultOOFMessageInternal;

                        InternalOOFMessage.Save();

                        Outlook.StorageItem ExternalOOFMessage;
                        ExternalOOFMessage = inbox.GetStorage("IPM.Note.Rules.ExternalOofTemplate.Microsoft", Outlook.OlStorageIdentifierType.olIdentifyByMessageClass);

                        ExternalOOFMessage.Body = DefaultOOFMessageInternal;
                        ExternalOOFMessage.Save();




                    }

                }
            }

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是否可以使用上述方法设置OOO的持续时间，即从和到日期？

只能使用EWS API设置范围。或者，如果EWS可用，则使用其内部使用EWS的对象