使用Exchange Web Services從C＃中的自定義和已發送郵件文件夾獲取電子郵件

Question

我正在嘗試從多個文件夾（包括“收件箱”，“已發送”和一些自定義文件夾）中檢索電子郵件。 我首先過濾文件夾，以便可以遍歷它們，調用FindItems返回它們的內容。 下面的代碼可以在沒有searchFilter4情況下工作（第10行），但是有了它，我得到了這個無用的錯誤：

'Microsoft.Exchange.WebServices.Data.ServiceResponseException' in Microsoft.Exchange.WebServices.dll

我的代碼：

// Folder name filter for Inbox, Completed, Inprogress, and Sent folders:
SearchFilter searchFilter1 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "Inbox");
SearchFilter searchFilter2 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "Completed");
SearchFilter searchFilter3 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "In Progress");
SearchFilter searchFilter4 = new SearchFilter.IsEqualTo(, WellKnownFolderName.SentItems);
SearchFilter.SearchFilterCollection searchFilterCollection = new SearchFilter.SearchFilterCollection(LogicalOperator.Or);
searchFilterCollection.Add(searchFilter1);
searchFilterCollection.Add(searchFilter2);
searchFilterCollection.Add(searchFilter3);
searchFilterCollection.Add(searchFilter4);

// Find folders:
FindFoldersResults findResults = service.FindFolders(
        WellKnownFolderName.MsgFolderRoot, searchFilterCollection,
        new FolderView(int.MaxValue) { Traversal = FolderTraversal.Deep }
);

Answer 1

我在寫問題的時候就知道了...

我需要做的就是在使用以下代碼行調用FindFolders之后將文件夾添加到我的findeResults ：

findResults.Folders.Add(Folder.Bind(service, WellKnownFolderName.SentItems));

我的新代碼：

// Folder name filter for Inbox, Completed, Inprogress, and Sent folders:
SearchFilter searchFilter1 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "Inbox");
SearchFilter searchFilter2 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "Completed");
SearchFilter searchFilter3 = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, "In Progress");
SearchFilter.SearchFilterCollection searchFilterCollection = new SearchFilter.SearchFilterCollection(LogicalOperator.Or);
searchFilterCollection.Add(searchFilter1);
searchFilterCollection.Add(searchFilter2);
searchFilterCollection.Add(searchFilter3);

// Find folders:
FindFoldersResults findResults = service.FindFolders(
        WellKnownFolderName.MsgFolderRoot, searchFilterCollection,
        new FolderView(int.MaxValue) { Traversal = FolderTraversal.Deep }
);

// Add SentItems to the findResults:
findResults.Folders.Add(Folder.Bind(service, WellKnownFolderName.SentItems));