我正在编写一个桥梁,通过托管API将我们的客户端应用程序与EWS同步。
由于我不知道谁最后更新了我正在使用的约会(Outlook客户端/ owa /我的网桥),我遇到了很多问题。
某些约会(标有类别[0] ='预订')我不希望用户修改,但我无法判断它是由用户还是我的桥更新。
有没有办法可以将约会创建为只读,或者获取约会的旧信息并将其还原?
我试图在下面表达我的意思:
public void TimerCallback(object source, ElapsedEventArgs e)
{
FPollTimer.Enabled = false;
try
{
GetEventsResults notificationEvents = FCalendarSubscription.GetEvents();
EWSMethods.monitorFRM.log("Notification count = " + FEWSUser + ":" + notificationEvents.AllEvents.Count.ToString());
if (notificationEvents.AllEvents.Count > 0)
{
foreach (ItemEvent itemEvent in notificationEvents.ItemEvents)
{
// -- check to see if this is a valid appointment -- //
// -- Echange creates two appts and deletes one of -- //
// -- them for any appointment creation -- //
try
{
//Folder tempFolder = Folder.Bind(FEWSService, itemEvent.ParentFolderId.ToString());
EWSMethods.monitorFRM.log("Notification-" + FEWSUser + " : " + itemEvent.EventType.ToString());
// -- Is this item in the stack? -- //
if (NeedPingPongcheck(itemEvent))
{
CheckPingPong(itemEvent);
}
else
{
Appointment o_appointment = Appointment.Bind(FEWSService, itemEvent.ItemId.ToString());
if (o_appointment != null) WriteEventToDB(itemEvent);
}
}
catch (Exception exc2)
{
EWSMethods.monitorFRM.log("TimerCallBack inner " + exc2.Message);
}
}
}
}
catch (Exception exc)
{
EWSMethods.monitorFRM.log("timercallback outer " + exc.Message);
//MessageBox.Show(e.Message);
}
FPollTimer.Enabled = true;
}
public void WriteEventToDB(ItemEvent item)
{
try
{
EWSMethods.monitorFRM.log("Attempting write to DB ");
string s_allday;
string s_appointmentid;
//MessageBox.Show(item.ItemId.ToString());
// -- use the old item id for deleted (moved) appointments -- //
if (item.EventType == EventType.Moved)
{
s_appointmentid = item.OldItemId.ToString();
}
else
{
s_appointmentid = item.ItemId.ToString();
}
// Get all properties of email message
PropertySet pset = new PropertySet(BasePropertySet.FirstClassProperties);
// Get the body in text
pset.RequestedBodyType = Microsoft.Exchange.WebServices.Data.BodyType.Text;
// -- set up allDay flag -- //
Appointment o_appointment = Appointment.Bind(FEWSService, item.ItemId.ToString(),pset);
if ((o_appointment.IsAllDayEvent) & (o_appointment != null))
{
s_allday = "Y";
}
else
{
s_allday = "N";
}
// --
if (o_appointment.Categories[0] != "Booking")
{
AddInterimEntry(o_appointment,
item,
s_allday,
s_appointmentid,
item.EventType.ToString());
}
else
{
if ((item.EventType == EventType.Modified) || (item.EventType == EventType.Moved)) {
EWSMethods.monitorFRM.log("Booking item skipped." + item.OldItemId.ToString());
}
}
}
catch (Exception e)
{
EWSMethods.monitorFRM.log(e.Message);
}
}
提前致谢。