The code snippet showing you how you create folder in Office 365 SharePoint Document Library C#.

The code snippet below creates 2 folders, Floder1 and Floder2 in a Document Library name Documents.

static void Main(string[] args)

{

string siteUrl = “https://someone.sharepoint.com/Dev%20Site”;

ClientContext clientContext = new ClientContext(siteUrl);

SecureString securePassword = Login.GetPassword();

clientContext.Credentials = new SharePointOnlineCredentials(“someone@someone.onmicrosoft.com”, securePassword);

Web rootWeb = clientContext.Web;

//Get List

var query = clientContext.LoadQuery(rootWeb.Lists.Where(p => p.Title == “Documents”));

clientContext.ExecuteQuery();

List list = query.FirstOrDefault();

string[] namesArray = new string[] { “Folder1”, “Folder2” };

foreach (string name in namesArray)

{

var folders = list.RootFolder.Folders;

clientContext.Load(folders);

clientContext.ExecuteQuery();

var newFolder = folders.Add(name);

Console.WriteLine(name);

}

//Execute request

clientContext.ExecuteQuery();

}