获取sharepoint documentlibrary 子文件夹的内容。

var folder = client.Web.GetFolderByServerRelativeUrl("SDT PRO/Excel Tools folder");
var folderItem = folder.ListItemAllFields;
client.Load(folderItem);
client.ExecuteQuery();

目前这个folderItem里面有我文件夹中的列名，但是当我想通过

var collItem = (String)folderItem["Name"];
var lalala = (String)folderItem["Workbook Type"];

    展示的时候却显示列名没有初始化。。

https://msdn.microsoft.com/zh-cn/library/office/microsoft.sharepoint.spfolder.documentlibrary.aspx