Question

我正在开发一个Outlook加载项，它将一个表单区域添加到IPM.Appointment邮件类。显示此区域时，它将首先向AppointmentItem添加一些属性。

Outlook.AppointmentItem appItem;

private void FormRegion_FormRegionShowing(object sender, System.EventArgs e)
{
    try
    {
        appItem = (Outlook.AppointmentItem)this.OutlookItem;

        appItem.ItemProperties.Add("CustomProperty", Outlook.OlUserPropertyType.olText);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}

这在我的日历上工作正常，但如果我尝试使用带有编辑或所有者访问权限的委托日历的插件，则会抛出以下异常：

System.UnauthorizedAccessException: You don't have appropriate permission to perform this operation.
  at Microsoft.Office.Interop.Outlook.Itemproperties.Add(String Name, OlUserPropertType Type, ObjectAddToFolderFields, Object DisplayFormat)
  at ThisAddin.FormRegion.FormRegion_FormRegionShowing(Ovject sender,EventArgs e)

感谢任何和所有帮助！

Answer 1

我通过UserProperties遇到了同样的问题。对我来说，只有在我第一次尝试添加属性时才会发生异常。因此，为了解决这个问题，我会抓住异常并再试一次。

Outlook.UserProperties properties = appointmentItem.UserProperties;
Outlook.UserProperty property = null;
try
{
    property = properties.Add(propertyName, Outlook.OlUserPropertyType.olText);
}
catch (System.UnauthorizedAccessException exception)
{
    // the first time didn't work, try again once before giving up
    property = properties.Add(propertyName, Outlook.OlUserPropertyType.olText);
}

C＃Outlook 2010 Addin - AppointmentItem.ItemProperties.Add Exception

1 个答案: