Create folder in SharePoint list (SharePoint 2010, 2013, 2016)

So, we continue to work with basic operations, today is another piece of code in which we are using CSOM create a folder in the program list. And as usual by tradition I use Visual studio.

The main advantage of this code is the use of C#, which means such wonderful features are available as Custom Timer Job, Event Reciever and much more. In my console project I using following reference and code:

using Microsoft.SharePoint.Client;

using (var clientContext = new ClientContext("http://sp/sites/test"))
            {
                string folderName = "test";
                var list = clientContext.Web.Lists.GetByTitle("ListBase");
                list.EnableFolderCreation = true;

                clientContext.Load(list);
                clientContext.Load(list.RootFolder);
                clientContext.Load(list.RootFolder.Folders);
                clientContext.ExecuteQuery();

                var folderCollection = list.RootFolder.Folders;

                foreach (var folder in folderCollection)
                {
                    if (folder.Name == folderName)
                    {
                        clientContext.Load(folder.Files);
                        clientContext.ExecuteQuery();
                    }
                    else
                    {
                        var itemCreateInfo = new ListItemCreationInformation
                        {
                            UnderlyingObjectType = FileSystemObjectType.Folder,
                            LeafName = folderName
                        };
                        var newItem = list.AddItem(itemCreateInfo);
                        newItem["Title"] = folderName;
                        newItem.Update();
                        clientContext.ExecuteQuery();
                        break;
                    }
                }
            }

Happy Coding!