是否可以通过使用Exchange Web服务（EWS）托管Api提供文件夹的路径来搜索公用文件夹中的所有文件夹和子文件夹？
答案 0 :(得分：10)
您只能在EWS上的一个级别的文件夹中进行搜索，以便：
PublicFoldersRoot \ subjectA \ sectionB \ PARTC \
我会搜索“subjectA”文件夹，然后一旦我有了FolderId，那么我会搜索“sectionB”文件夹，依此类推，直到找到我需要的为止。
方法GetPublicFolderByPath采用路径“subjectA \ sectonB \ partC \”并将路径拆分为文件夹名称数组，然后递归查找每个文件夹。
public Folder GetPublicFolderByPath(ExchangeService service, String ewsFolderPath)
{
String[] folders = ewsFolderPath.Split('\');
Folder parentFolderId = null;
Folder actualFolder = null;
for (int i = 0; i < folders.Count(); i++)
{
if (0 == i)
{
parentFolderId = GetTopLevelFolder(service, folders[i]);// for first first loop public folder root is the parent
actualFolder = parentFolderId; //in case folders[] is only one long
}
else
{
actualFolder = GetFolder(service, parentFolderId.Id, folders[i]);
parentFolderId = actualFolder;
}
}
return actualFolder;
}
方法GetTopLevelFolder获取第一个文件夹“sectionA”，它是公用文件夹根目录a.k.a.“WellKnownFolderName.PublicFoldersRoot”的子项。
private Folder GetTopLevelFolder(ExchangeService service, String folderName)
{
FolderView folderView = new FolderView(int.MaxValue);
FindFoldersResults findFolderResults = service.FindFolders(WellKnownFolderName.PublicFoldersRoot, folderView);
foreach (Folder folder in findFolderResults)
{
if (folderName.Equals(folder.DisplayName, StringComparison.InvariantCultureIgnoreCase))
{
return folder;
}
}
throw new Exception("Top Level Folder not found: " + folderName);
}
GetFolder方法接受父FolderId并搜索所有子文件夹以查找名称提供的匹配项，并返回您请求的子FolderId。
private Folder GetFolder(ExchangeService service, FolderId ParentFolderId, String folderName)
{
FolderView folderView = new FolderView(int.MaxValue);
FindFoldersResults findFolderResults = service.FindFolders(ParentFolderId, folderView);
foreach (Folder folder in findFolderResults)
{
if (folderName.Equals(folder.DisplayName, StringComparison.InvariantCultureIgnoreCase))
{
return folder;
}
}
throw new Exception("Folder not found: " + folderName);
}
请注意，我使用的是Microsoft.Exchange.WebServices托管的API dll，与https://yourexchangeserver/ews/services.wsdl类似。要从路径中获取文件夹，请使用创建ExchangeService对象，然后写入：
GetPublicFolderByPath(service, "subjectA\sectionB\partC\")
如果这有助于你，请进行投票：）
答案 1 :(得分：0)
这是一个基于@ ono2012答案的包装
using System;
using System.DirectoryServices.AccountManagement;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using Microsoft.Exchange.WebServices.Data;
namespace EmailServices.Web.IntegrationTests
{
// http://msdn.microsoft.com/en-us/library/exchange/jj220499(v=exchg.80).aspx
internal class MsExchangeServices
{
public MsExchangeServices()
{
ServicePointManager.ServerCertificateValidationCallback = CertificateValidationCallBack;
m_exchangeService = new ExchangeService { UseDefaultCredentials = true };
// Who's running this test? They better have Exchange mailbox access.
m_exchangeService.AutodiscoverUrl(UserPrincipal.Current.EmailAddress, RedirectionUrlValidationCallback);
}
public ExchangeService Service { get { return m_exchangeService; } }
public Folder GetPublicFolderByPath(string ewsFolderPath)
{
string[] folders = ewsFolderPath.Split('\\');
Folder parentFolderId = null;
Folder actualFolder = null;
for (int i = 0; i < folders.Length; i++)
{
if (0 == i)
{
parentFolderId = GetTopLevelFolder(folders[i]);
actualFolder = parentFolderId;
}
else
{
actualFolder = GetFolder(parentFolderId.Id, folders[i]);
parentFolderId = actualFolder;
}
}
return actualFolder;
}
private static bool RedirectionUrlValidationCallback(string redirectionUrl)
{
// The default for the validation callback is to reject the URL.
bool result = false;
Uri redirectionUri = new Uri(redirectionUrl);
// Validate the contents of the redirection URL. In this simple validation
// callback, the redirection URL is considered valid if it is using HTTPS
// to encrypt the authentication credentials.
if (redirectionUri.Scheme == "https")
result = true;
return result;
}
private static bool CertificateValidationCallBack(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
// If the certificate is a valid, signed certificate, return true.
if (sslPolicyErrors == SslPolicyErrors.None)
return true;
// If there are errors in the certificate chain, look at each error to determine the cause.
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateChainErrors) == 0)
{
// In all other cases, return false.
return false;
}
else
{
if (chain != null)
{
foreach (X509ChainStatus status in chain.ChainStatus)
{
if ((certificate.Subject == certificate.Issuer) && (status.Status == X509ChainStatusFlags.UntrustedRoot))
{
// Self-signed certificates with an untrusted root are valid.
}
else
{
if (status.Status != X509ChainStatusFlags.NoError)
{
// If there are any other errors in the certificate chain, the certificate is invalid,
// so the method returns false.
return false;
}
}
}
}
// When processing reaches this line, the only errors in the certificate chain are
// untrusted root errors for self-signed certificates. These certificates are valid
// for default Exchange server installations, so return true.
return true;
}
}
private Folder GetTopLevelFolder(string folderName)
{
FindFoldersResults findFolderResults = m_exchangeService.FindFolders(WellKnownFolderName.PublicFoldersRoot, new FolderView(int.MaxValue));
foreach (Folder folder in findFolderResults.Where(folder => folderName.Equals(folder.DisplayName, StringComparison.InvariantCultureIgnoreCase)))
return folder;
throw new Exception("Top Level Folder not found: " + folderName);
}
private Folder GetFolder(FolderId parentFolderId, string folderName)
{
FindFoldersResults findFolderResults = m_exchangeService.FindFolders(parentFolderId, new FolderView(int.MaxValue));
foreach (Folder folder in findFolderResults.Where(folder => folderName.Equals(folder.DisplayName, StringComparison.InvariantCultureIgnoreCase)))
return folder;
throw new Exception("Folder not found: " + folderName);
}
readonly ExchangeService m_exchangeService;
}
}