How to create a SharePoint Folder in C#

// SharePoint Client DLL

using Microsoft.SharePoint.Client;

public static void createDMSFolder(string rootFolder, string newFolderName, IOrganizationService service)

{

    string strUserName = "username";

    string strPassword = "password";

    string strDomain = "domain";

    string strURL = "https://dms.domain.in";

    using (ClientContext context = new ClientContext(strURL))

    {

        context.Credentials = new System.Net.NetworkCredential(strUserName, strPassword, strDomain);

        Microsoft.SharePoint.Client.List list = context.Web.Lists.GetByTitle(rootFolder);

        var folder = list.RootFolder;

        context.Load(folder);

        context.ExecuteQuery();

        ListItemCreationInformation newItemInfo = new ListItemCreationInformation();

        newItemInfo.UnderlyingObjectType = FileSystemObjectType.Folder;

        newItemInfo.LeafName = newFolderName;

        ListItem newListItem = list.AddItem(newItemInfo);

        newListItem["Title"] = newFolderName;

        newListItem.Update();

        context.ExecuteQuery();

        CreateSubFoldersInDMS(list, context, newFolderName, service);

    }

}

private static void CreateSubFoldersInDMS(Microsoft.SharePoint.Client.List list, ClientContext context, string parentFolder, IOrganizationService xrmContext)

{

    var folders = list.RootFolder.Folders;

    context.Load(folders);

    context.ExecuteQuery();

    Dictionary<int, string> docList = new Dictionary<int, string>();

    docList.Add(100000000, "Copy of valid passport");

    docList.Add(100000001, "Copy of family book");

    docList.Add(100000003, "Personal Photo");

    docList.Add(100000004, "Curriculum Vitae (CV)");

    docList.Add(100000005, "Copy of last education degree");

    foreach (var folder in folders)

    {

        if (folder.Name == parentFolder)

        {

            foreach (KeyValuePair<int, string> l in docList)

            {

                var childFolder = folder.Folders.Add(l.Value.Replace("\\", "and"));

                childFolder.Update();

                context.ExecuteQuery();

            }

            break;

        }

    }

}

Refer more articles related to SharePoint and Dynamic CRM

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