Exchange Webservice Managed API - 按扩展属性查找项目

Question

我曾尝试在 EWS 约会中使用扩展属性，但我似乎无法再次找到约会。设置属性部分等于这个问题中显示的部分：

How to Update an Appointment from Exchange Web Service Managed API 2.0 in ASP.NET

当我尝试检索约会时，我遵循了以下示例：

http://msdn.microsoft.com/en-us/uc14trainingcourse_5l_topic3#_Toc254008129 http://msdn.microsoft.com/en-us/library/exchange/dd633697(v=exchg.80).aspx

但是当我进行查询时，我从来没有收到任何约会返回。

这是查找的代码：

        ItemView view = new ItemView(10);

        // Get the GUID for the property set.
        Guid MyPropertySetId = new Guid("{" + cGuid + "}");

        // Create a definition for the extended property.
        ExtendedPropertyDefinition extendedPropertyDefinition =
          new ExtendedPropertyDefinition(MyPropertySetId, "AppointmentID", MapiPropertyType.String);

        view.PropertySet =
         new PropertySet(
               BasePropertySet.IdOnly,
               ItemSchema.Subject,
               AppointmentSchema.Start,
               AppointmentSchema.End, extendedPropertyDefinition);

        SearchFilter filter = new SearchFilter.Exists(extendedPropertyDefinition);

        FindItemsResults<Item> findResults = service.FindItems(WellKnownFolderName.Inbox, filter,
            view);

非常感谢任何帮助。

编辑： 当我尝试创建文档显示的属性时：

http://msdn.microsoft.com/en-us/library/exchange/dd633654(v=exchg.80).aspx

它失败了，因为它是作为属性值添加的 Guid。 :-/

再次编辑： 刚刚尝试获取今天的所有约会，并从我刚刚创建的约会中获取属性，它说的和我存储的一样，没有 {}，所以它必须与过滤器有关。

再次编辑* 跟

有关系

 ExtendedPropertyDefinition extendedProperty = new ExtendedPropertyDefinition(

如果我使用：

 new ExtendedPropertyDefinition(
                DefaultExtendedPropertySet.Appointment,
                "AppointmentID",
                MapiPropertyType.String);

它会找到所有具有属性的约会，但如果我搜索一个特定的约会：

 Guid MyPropertySetId = new Guid("{" + cGuid + "}");

 ExtendedPropertyDefinition extendedProperty =
            new ExtendedPropertyDefinition(
                MyPropertySetId,
                "AppointmentID",
                MapiPropertyType.String);

然后什么都没有找到。

Answer 1

这是一个示例代码，如何使用 customid 创建约会并在保存后找到它：

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
        service.AutodiscoverUrl("someone@somewhere.com");

        ExtendedPropertyDefinition def = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.PublicStrings, "AppointmenId", MapiPropertyType.String);

        Guid testid = Guid.NewGuid ();

        Appointment appointment = new Appointment(service);
        appointment.Subject = "Test";
        appointment.Start = DateTime.Now.AddHours(1);
        appointment.End = DateTime.Now.AddHours(2);
        appointment.SetExtendedProperty(def, testid.ToString());
        appointment.Save(WellKnownFolderName.Calendar);

        SearchFilter filter = new SearchFilter.IsEqualTo(def, testid.ToString());

        FindItemsResults<Item> fir = service.FindItems(WellKnownFolderName.Calendar, filter, new ItemView(10));

希望对你有帮助...

Answer 2

您在收件箱中搜索约会。在那里你永远找不到它们。请尝试在日历中搜索。

Answer 3

这是一个将 guid 作为扩展属性并根据 guid 获取约会的示例。

private static readonly PropertyDefinitionBase AppointementIdPropertyDefinition = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.PublicStrings, "AppointmentID", MapiPropertyType.String);
public static PropertySet PropertySet = new PropertySet(BasePropertySet.FirstClassProperties, AppointementIdPropertyDefinition);


//Setting the property for the appointment 
 public static void SetGuidForAppointement(Appointment appointment)
{
    try
    {
        appointment.SetExtendedProperty((ExtendedPropertyDefinition)AppointementIdPropertyDefinition, Guid.NewGuid().ToString());
        appointment.Update(ConflictResolutionMode.AlwaysOverwrite, SendInvitationsOrCancellationsMode.SendToNone);
    }
    catch (Exception ex)
    {
        // logging the exception
    }
}

//Getting the property for the appointment
 public static string GetGuidForAppointement(Appointment appointment)
{
    var result = "";
    try
    {
        appointment.Load(PropertySet);
        foreach (var extendedProperty in appointment.ExtendedProperties)
        {
            if (extendedProperty.PropertyDefinition.Name == "AppointmentID")
            {
                result = extendedProperty.Value.ToString();
            }
        }
    }
    catch (Exception ex)
    {
     // logging the exception
    }
    return result;
}