谷歌日歷api asp.net c＃刪除事件

Question

我有這個功能

 private static void DeleteEvent(CalendarService service, string pTitle,DateTime pDate)
    {
        FeedQuery query = new FeedQuery();
        query.Uri = new Uri("http://www.google.com/calendar/feeds/default/private/full");
        AtomFeed calFeed = service.Query(query);
        foreach (AtomEntry entry in calFeed.Entries)
        {
            if (pTitle.Equals(entry.Title.Text))
            {
                entry.Delete(); break;
            }
        }
    }

如何按標題和日期刪除事件？

Answer 1

盡管上述解決方案有效，但我建議另一種方法。 與其每次都遍歷所有事件並刪除所有事件，不如讓Google為您查找特定事件。 可以通過使用ExtendedProperty使用以下方法來完成

1. 為添加的每個事件分配一個ID（與您在數據庫中設置的ID相同）。
2. 刪除時，您傳遞ID即可刪除，並使用查詢為您獲取ID
3. 刪除特定事件

---

Google.GData.Calendar.EventEntry Entry = new Google.GData.Calendar.EventEntry();

//create the ExtendedProperty and add the EventID in the new event object, 
//so it can be deleted / updated later
ExtendedProperty oExtendedProperty = new ExtendedProperty();
oExtendedProperty.Name = "EventID";
oExtendedProperty.Value = GoogleAppointmentObj.EventID;
Entry.ExtensionElements.Add(oExtendedProperty);

string ThisFeedUri = "http://www.google.com/calendar/feeds/" + CalendarID 
+ "/private/full";
Uri postUri = new Uri(ThisFeedUri);

//create an event query object and attach the EventID to it in Extraparameters
EventQuery Query = new EventQuery(ThisFeedUri);
Query.ExtraParameters = "extq=[EventID:" + GoogleAppointmentObj.EventID + "]";
Query.Uri = postUri;

//Find the event with the specific ID
EventFeed calFeed = CalService.Query(Query);

//if search contains result then delete
if (calFeed != null && calFeed.Entries.Count > 0)
{
   foreach (EventEntry SearchedEntry in calFeed.Entries)
   {
      SearchedEntry.Delete();
      break;
   }

}

Answer 2

這些可能會幫助：

http://code.google.com/apis/calendar/data/2.0/developers_guide_dotnet.html#DeletingEvents
http://code.google.com/apis/calendar/data/2.0/developers_guide_dotnet.html#RetrievingEvents

我猜可能會發生以下情況：

EventQuery query = new EventQuery("https://www.google.com/calendar/feeds/default/private/full");  
query.StartDate = ...;
query.EndDate = ...;
EventFeed feed = service.Query(query);
foreach (var entry in feed.Entries)
{
    if (pTitle.Equals(entry.Title.Text))
    {
        entry.Delete(); break;
    }
}