Programmatically create a subfolder in SharePoint 2010 list

I have a custom list named “Custom”. I have a folder called "2012" in the list. I need to add a subfolder inside "2012" folder.

In this blog you will see how to create a subfolder in the list using SharePoint Object Model.

Code Snippet:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.SharePoint; using System.Collections;   namespace CreateSubfolder {     class Program     {         static void Main(string[] args)         {             using (SPSite site = new SPSite("http://serverName/sites/Vijai/"))             {                 using (SPWeb web = site.OpenWeb())                 {                     SPList list = web.Lists.TryGetList("Custom");                     if (list != null)                     {                         foreach (SPListItem item in list.Folders)                         {                             if (item.Title == "2012")                             {                                 SPListItem newItem = list.AddItem(item.Folder.ServerRelativeUrl, SPFileSystemObjectType.Folder);                                 newItem["Title"] = "2012SubFolder1";                                 newItem.Update();                             }                         }                                           }                 }             }         }     }}

A subfolder named "2012SubFolder1" is created successfully inside "2012" folder in the custom list.