New Folder of List not display in View

Question

I'm using the following code to create new list folder:

Folder newFolder = listCopyTo.RootFolder.Folders.Add("NewFolder");
clientContext.Load(newFolder);
clientContext.ExecuteQuery();

After that the new folder is exist in the list (i checked it). But it doesn't dispay in browser (view). I found an article on this issue. It says the folowing:

SPListItem newFolder = reportingList.Items.Add(reportingList.RootFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder, “New_Folder_Name”);
//the following line will associate a list item with the newly created folder and make the folder visible in the list views
newFolder.Update();

But i can't to follow this way because i'm using SharePoint 2010 Client-Side Object Model. Is there the right decision for me?

Answer 1

I cannot comment your post yet, so I take a shot at answering.

Have you checked in your view parameters that you are allowing the folders to be displayed ?

One other thing, in your List advanced settings, do allow folders to be created in your list ?

Answer 2

So i resolved this issue. New folder of List must be added like new ListItem by List.AddItem(ListItemCreationInformation parameters) method. Just need to set ListItemCreationInformation.UnderlyingObjectType to FileSystemObjectType.Folder.

Example:

List listCopyTo = ClientContext.Web.Lists.GetByTitle("ListName");
ListItemCreationInformation newFolderInfo = new ListItemCreationInformation();
newFolderInfo.UnderlyingObjectType = FileSystemObjectType.Folder;
ListItem newFolder = listCopyTo.AddItem(newFolderInfo);
newFolder["Title"] = folder.Name;
newFolder.Update();
clientContext.ExecuteQuery();