C# 获取IEnumerable<;Microsof.Exchange.WebService.Data.ItemId>;来自使用EWS API的FindItems
我正在编写一个C#应用程序来检查一些监控邮箱,并清除超过指定期限(例如6个月)的电子邮件 之前我打算获取项目,然后在C# 获取IEnumerable<;Microsof.Exchange.WebService.Data.ItemId>;来自使用EWS API的FindItems,c#,exchangewebservices,C#,Exchangewebservices,我正在编写一个C#应用程序来检查一些监控邮箱,并清除超过指定期限(例如6个月)的电子邮件 之前我打算获取项目,然后在foreach块中,依次删除每个项目。在寻找另一个问题的解决方案时,我无意中使用了DeleteItems。这需要一个System.Collection.Generic.IENumerable,但在下面的代码中,FindItems返回一个System.Collections.ObjectModel.Collecion 如何转换或获取传递给DeleteItems的正确类型 Extend
foreach
块中,依次删除每个项目。在寻找另一个问题的解决方案时,我无意中使用了DeleteItems
。这需要一个System.Collection.Generic.IENumerable
,但在下面的代码中,FindItems
返回一个System.Collections.ObjectModel.Collecion
如何转换或获取传递给DeleteItems的正确类型
ExtendedPropertyDefinition allFoldersType = new ExtendedPropertyDefinition(13825, MapiPropertyType.Integer);
FolderId rootFolderId = new FolderId(WellKnownFolderName.Root);
FolderView folderView = new FolderView(1000);
folderView.Traversal = FolderTraversal.Deep;
SearchFilter.SearchFilterCollection searchFilterCollection = new SearchFilter.SearchFilterCollection(LogicalOperator.And);
searchFilterCollection.Add(new SearchFilter.IsEqualTo(allFoldersType, "2"));
searchFilterCollection.Add(new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "allitems"));
FindFoldersResults findFoldersResults = exchangeService.FindFolders(rootFolderId, searchFilterCollection, folderView);
Folder allItemsFolder = findFoldersResults.Folders[0];
searchFilterCollection = new SearchFilter.SearchFilterCollection(LogicalOperator.And);
searchFilterCollection.Add(new SearchFilter.IsLessThanOrEqualTo(ItemSchema.DateTimeReceived, DateTime.Now.AddMonths(-6)));
searchFilterCollection.Add(new SearchFilter.IsEqualTo(ItemSchema.ItemClass, "IPM.Note"));
var findItems = allItemsFolder.FindItems(searchFilterCollection, new ItemView(100));
var items = findItems.Items;
exchangeService.DeleteItems(findItems, DeleteMode.HardDelete, SendCancellationsMode.SendToNone, AffectedTaskOccurrence.SpecifiedOccurrenceOnly);
每个
项
都有一个Id
类型的ItemId
属性,可以使用linq访问该属性:
var findItems = allItemsFolder.FindItems(searchFilterCollection, new ItemView(100));
var itemIds = findItems.Items.Select(item => item.Id);
exchangeService.DeleteItems(itemIds, DeleteMode.HardDelete, SendCancellationsMode.SendToNone, AffectedTaskOccurrence.SpecifiedOccurrenceOnly);
项目文档:
项目Id文档: