c# - 通过提供路径名称搜索公共(public)文件夹中的文件夹

Question

是否可以通过使用 Exchange Web 服务 (EWS) 托管 Api 提供文件夹路径来搜索公用文件夹中的所有文件夹和子文件夹？

Answer 1

您只能在文件夹内搜索，在 EWS 上深入一层，因此:

PublicFoldersRoot\subjectA\sectionB\partC\

我会搜索“subjectA”文件夹，然后在获得该 FolderId 后，我会搜索“sectionB”文件夹，依此类推，直到找到我需要的内容。

GetPublicFolderByPath 方法采用路径“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;
}

GetTopLevelFolder 方法获取第一个文件夹“sectionA”，它是公共(public)文件夹根目录的子文件夹，也就是“WellKnownFolderName.PublicFoldersRoot”。

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 方法采用父 FolderId 并在所有子文件夹中搜索与提供的名称匹配的项，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 API dll，与 https://yourexchangeserver/ews/services.wsdl 的想法类似。要从路径中获取文件夹，请使用创建 ExchangeService 对象然后写入:
GetPublicFolderByPath(服务, "subjectA\sectionB\partC\")

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