Sharepoint Client Object model create Folders in Document Library or list programmatically

Below methods will create a Folder or Subfolders in SharePoint library from client side.

Providing the relative path you can create the subfolder e.i  folder inside a folder as well

DDL used are Microsoft.Sharepoint.client and Microsoft.Sharepoint.Client.runtime.

public void CreateListFolder(string siteUrl, string listName, string relativePath, string folderName)

        {

            using (ClientContext clientContext = new ClientContext(siteUrl))

            {

                Web web = clientContext.Web;

                List list = web.Lists.GetByTitle(listName);

                list.EnableFolderCreation = true;

              

                ListItemCreationInformation newItem = new ListItemCreationInformation();

                newItem.UnderlyingObjectType = FileSystemObjectType.Folder;

                newItem.FolderUrl = siteUrl +"/"+ listName;

                if (!relativePath.Equals(string.Empty))

                {

                    newItem.FolderUrl += "/" + relativePath;

                }

                newItem.LeafName = folderName;

                ListItem item = list.AddItem(newItem);

                 //updating the metadata for the folder

                item["Col1"] = "Folder Property-1";

                item.Update();

                clientContext.Load(list);

                clientContext.ExecuteQuery();

            }

You can call the method a below

CreateListFolder(@"http://WebApplication:777", "ListA", "", "FolderA");

Other way of creating it is

  public void CreateLibraryFolder2()

        {

            using (var clientContext = new ClientContext(@"http://WebApplication:777/"))

            {

                var web = clientContext.Web;

                var lst = web.Lists.GetByTitle("Shared Documents");

                var fld1 = lst.RootFolder.Folders.Add("FirstLevel2");

                var fld2 = fld1.Folders.Add("SecondLevel2");      

                fld1.Update();

                fld2.Update();

                var t1 = lst.RootFolder.Folders.Add("FirstLevel7");

                var t2 = t1.Folders.Add("SecondLevel7");

                fld1.Update();

                fld2.Update();

                               

                clientContext.ExecuteQuery();

               

            }

        }

        

Thanks to the references found by googling :)