In this blog we will see how to create a folder in Shared Documents library 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 CreateFolder {     class Program     {         static void Main(string[] args)         {             using (SPSite site = new SPSite("http://serverName/sites/Vijai/"))             {                 using (SPWeb web = site.OpenWeb())                 {                     web.Folders.Add("Shared Documents/Folder");                 }             }         }     } }
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A folder named "Folder" will be created in the Shared Documents library.