Question

我尝试在Sharepoint在线列表下创建文件夹结构。我根据这篇文章创建了一个名为Shared1的列表：

http://blogs.technet.com/b/catastrophic_failure_joannav/archive/2013/10/23/how-to-create-a-custom-list-in-sharepoint-online-quot-w15-quot.aspx

我正在使用此代码尝试创建底层结构：

seed

执行后我得到了这个错误：

using (var clientContext = new ClientContext("https://myEnv.sharepoint.com"))
{
    var passWord = new SecureString();
    foreach (char c in "myPSW".ToCharArray()) passWord.AppendChar(c);

    clientContext.Credentials = new SharePointOnlineCredentials("myAcc@myenv.onmicrosoft.com", passWord);
    Web web = clientContext.Web;
    clientContext.Load(web);
    clientContext.ExecuteQuery();
    var folder = CreateFolder(clientContext.Web, "Shared1", "FolderA/SubFolderA/SubSubFolderA");
}

/// <summary>
/// Create Folder client object
/// </summary>
/// <param name="web"></param>
/// <param name="listTitle"></param>
/// <param name="fullFolderUrl"></param>
/// <returns></returns>
public static Folder CreateFolder(Web web, string listTitle, string fullFolderUrl)
{
    if (string.IsNullOrEmpty(fullFolderUrl))
        throw new ArgumentNullException("fullFolderUrl");
    var list = web.Lists.GetByTitle(listTitle);
    return CreateFolderInternal(web, list.RootFolder, fullFolderUrl);
}

private static Folder CreateFolderInternal(Web web, Folder parentFolder, string fullFolderUrl)
{
    var folderUrls = fullFolderUrl.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
    string folderUrl = folderUrls[0];
    var curFolder = parentFolder.Folders.Add(folderUrl);
    web.Context.Load(curFolder);
    web.Context.ExecuteQuery();

    if (folderUrls.Length > 1)
    {
        var subFolderUrl = string.Join("/", folderUrls, 1, folderUrls.Length - 1);
        return CreateFolderInternal(web, curFolder, subFolderUrl);
    }
    return curFolder;
}

public static Folder GetFolder(Web web, string fullFolderUrl)
{
    if (string.IsNullOrEmpty(fullFolderUrl))
        throw new ArgumentNullException("fullFolderUrl");

    if (!web.IsPropertyAvailable("ServerRelativeUrl"))
    {
        web.Context.Load(web, w => w.ServerRelativeUrl);
        web.Context.ExecuteQuery();
    }
    var folder = web.GetFolderByServerRelativeUrl(web.ServerRelativeUrl + fullFolderUrl);
    web.Context.Load(folder);
    web.Context.ExecuteQuery();
    return folder;
}

这是SP中列表的打印。

我错过了什么？

Answer 1

您需要在CreateFolder方法中加载列表。

// DW: remove e
std::string trim_real(std::string str) {
    // DW: all to lowercase
    std::transform(str.begin(), str.end(), str.begin(), ::tolower);

    // DW: find "e" and "."
    size_t pe = str.find_first_of("e");
    std::string se = str.substr(pe + 1, str.size() - (pe + 1));
    int de = std::stoi(se);

    // DW: get string without "e"
    std::string sc = str.substr(0, pe);
    std::cout << "sc is " << sc << std::endl;

    // DW: remove uneccessary 0
    size_t pf0 = sc.find_first_not_of("0");
    size_t pl0 = sc.find_last_not_of("0");
    std::string sc_trim = sc.substr(pf0, pl0 - pf0 + 1);
    std::cout << "sc_trim is " << sc_trim << std::endl;

    // DW: move "." according to e
    size_t pp = sc_trim.find_first_of(".");
    if (pp == std::string::npos) {
        // DW: this means there is no "."
        pp = 0;
    }
    int pp_tobe = pp + de;

    sc_trim.erase(pp, 1);
    if (de > 0) {
        // DW: should move "." to the right
        if (pp_tobe < sc_trim.size()) {
            sc_trim.insert(pp_tobe, ".");
        } else {
            sc_trim += std::string(pp_tobe - sc_trim.size() + 1, '0');
            sc_trim += ".0";
        }
    } else {
        // DW: should move "." to the left
        if (pp_tobe >= 0) {
            sc_trim.insert(pp_tobe, ".");
        } else {
            sc_trim = "." + std::string(0 - pp_tobe, '0') + sc_trim;
        }
    }

    if (sc_trim == ".") {
        // DW: this means sc_trim is actually 0 now
        sc_trim = "0.0";
    }
    return sc_trim;
}

Answer 2

您收到这些错误的原因与指定的错误网址有关。虽然您的列表存在于子站点Shared1上，但您尝试在根站点上访问它，下图说明了它

因此，解决方案是初始化适当网站的客户端上下文，因此请替换：

using (var clientContext = new ClientContext("https://myEnv.sharepoint.com/"))
{
    //...
}

与

using (var clientContext = new ClientContext("https://myEnv.sharepoint.com/Shared1"))
{
    //...
}

假设您要为列表中的列表创建文件夹 Shared1子网站

示例

以下示例演示了如何在Documents子网站News子网站下的https://contoso.sharepoint.com/news库中创建文件夹层次结构：（Archive | 2009 | 09）

using (var ctx = GetContext("https://contoso.sharepoint.com/news", userName, password)) { var list = ctx.Web.Lists.GetByTitle("Documents"); var folder = list.CreateFolder("Archive/2015/09"); Console.WriteLine(folder.ServerRelativeUrl); }

用法

public static ClientContext GetContext(Uri webUri, string userName, string password) { var securePassword = new SecureString(); foreach (var ch in password) securePassword.AppendChar(ch); return new ClientContext(webUri) { Credentials = new SharePointOnlineCredentials(userName, securePassword) }; }

，其中

ListExtensions.cs

using System; using Microsoft.SharePoint.Client; namespace SharePoint.ClientExtensions { public static class ListExtensions { /// <summary> /// Create Folder in List /// </summary> /// <param name="list"></param> /// <param name="folderUrl"></param> /// <returns></returns> public static Folder CreateFolder(this List list, string folderUrl) { if (string.IsNullOrEmpty(folderUrl)) throw new ArgumentNullException("folderUrl"); if (!list.IsPropertyAvailable("RootFolder")) { list.Context.Load(list.RootFolder); list.Context.ExecuteQuery(); } return CreateFolderInternal(list.RootFolder,folderUrl); } private static Folder CreateFolderInternal(Folder parentFolder, string folderUrl) { var folderUrlParts = folderUrl.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries); var curFolder = parentFolder.Folders.Add(folderUrlParts[0]); parentFolder.Context.Load(curFolder); parentFolder.Context.ExecuteQuery(); if (folderUrlParts.Length > 1) { var subFolderUrl = string.Join("/", folderUrlParts, 1, folderUrlParts.Length - 1); return CreateFolderInternal(curFolder, subFolderUrl); } return curFolder; } } }档案：

JSON.stringify(err)

在Sharepoint在线列表中创建文件夹结构

2 个答案: