C# Sharepoint.Client - Return 给定子文件夹中的所有文件和文件夹

Question

我正在尝试 return 从给定子文件夹开始的 SharePoint 库中的所有文件和文件夹。

如果我将 CamlQuery 上的 FolderServerRelativeUrl 设置为我希望从中开始的文件夹，我可以获得该给定文件夹的所有列表项；但是，当我尝试将 camlQuery.ViewXML 添加到递归 return 项目以及任何其他子文件夹时，出现以下异常：

Microsoft.SharePoint.Client.ServerException: 'The attempted operation is prohibited because it exceeds the list view threshold enforced by the administrator.'

代码

public static IEnumerable<string> GetSharepointFiles2(string sharePointsite, string libraryName, string username, string password, string subFolders)
{
    Uri filename = new Uri(sharePointsite);
    string server = filename.AbsoluteUri.Replace(filename.AbsolutePath, "");
    List<string> fullfilePaths = new List<string>();

    using (ClientContext cxt = new ClientContext(filename))
    {
        cxt.Credentials = GetCreds(username, password);

        Web web = cxt.Web;
        cxt.Load(web, wb => wb.ServerRelativeUrl);
        cxt.ExecuteQuery();

        List list = web.Lists.GetByTitle(libraryName);
        cxt.Load(list);
        cxt.ExecuteQuery();

        Folder folder = web.GetFolderByServerRelativeUrl(web.ServerRelativeUrl + subFolders);
        cxt.Load(folder);
        cxt.ExecuteQuery();

        CamlQuery camlQuery = new CamlQuery();
        camlQuery.ViewXml = @"<View Scope='RecursiveAll'>
                             <Query>
                             </Query>
                         </View>";

        camlQuery.FolderServerRelativeUrl = folder.ServerRelativeUrl;
        ListItemCollection listItems = list.GetItems(camlQuery);

        cxt.Load(listItems);
        cxt.ExecuteQuery();

        foreach (ListItem listItem in listItems)
        {
            if (listItem.FileSystemObjectType == FileSystemObjectType.File)
            {

                fullfilePaths.Add(String.Format("{0}{1}", server, listItem["FileRef"]));
            }
            else if (listItem.FileSystemObjectType == FileSystemObjectType.Folder)
            {
                Console.WriteLine(String.Format("{0}{1}", server, listItem["FileRef"]));
                fullfilePaths.Add(String.Format("{0}{1}", server, listItem["FileRef"]));
            }
        }
    }
    return fullfilePaths;
}

private static SharePointOnlineCredentials GetCreds(string username, string password)
{
    SecureString securePassword = new SecureString();

    foreach (char c in password.ToCharArray()) securePassword.AppendChar(c);
    return new SharePointOnlineCredentials(username, securePassword);
}

关于阈值限制，我已经在只有1个文件和1个文件夹的文件夹上尝试过（反过来该文件夹只有1个文件），所以如果限制是默认5000，我不知道为什么我会得到这个。

Answer 1

终于找到了一个有效的解决方案，即使它有点大锤！

尽管我要为其检索项目的文件夹中的项目远少于 5000 项，但问题是整个列表确实超过了此阈值（在本例中约为 11,000 项）。

我删除了 FolderServerRelativeURL 属性，然后使用 ListItemCollectionPosition paginate/batch 列出了列表中的所有项目。一旦所有项目都在一个集合中，就可以使用 Linq 过滤相关子文件夹。 (CAML Query - Going around the 5000 List Item Threshold)

如果有人有办法让物品更有针对性，我很乐意看到它。

代码：

public static IEnumerable<ListItem> GetSharepointFiles2(string sharePointsite, string libraryName, string username, string password, string subFolders)
{
    Uri filename = new Uri(sharePointsite);
    List<ListItem> items = new List<ListItem>();

    using (ClientContext cxt = new ClientContext(filename))
    {
        cxt.Credentials = GetCreds(username, password);

        Web web = cxt.Web;
        cxt.Load(web, wb => wb.ServerRelativeUrl);
        cxt.ExecuteQuery();

        List list = web.Lists.GetByTitle(libraryName);
        cxt.Load(list);
        cxt.ExecuteQuery();

        CamlQuery camlQuery = new CamlQuery();
        camlQuery.ViewXml = "<View Scope='Recursive'><RowLimit>5000</RowLimit></View>";

        do
        {
            ListItemCollection listItems = list.GetItems(camlQuery);
            cxt.Load(listItems);
            cxt.ExecuteQuery();

            items.AddRange(listItems);
            camlQuery.ListItemCollectionPosition = listItems.ListItemCollectionPosition;

        } while (camlQuery.ListItemCollectionPosition != null);

        var filteritems = items.Where(tt => tt.FieldValues["FileRef"].ToString().StartsWith(web.ServerRelativeUrl + subFolders));

        return filteritems;
    }
}

C# Sharepoint.Client - Return 给定子文件夹中的所有文件和文件夹

C# Sharepoint.Client - Return all files and folders from a given subfolder

c#

.net

sharepoint

caml

sharepoint-clientobject