How To: Add a permission group in the document library's folders

This is the snippet which will add a permission group in the document library’s folders.

    1:  using System;

    2:  using System.Collections.Generic;

    3:  using System.Text;

    4:  using Microsoft.SharePoint;

    5:   

    6:  namespace ConsoleApplication1

    7:  {

    8:      class Program

    9:      {

   10:          static void Main(string[] args)

   11:          {

   12:              Console.WriteLine("Enter your site URL");

   13:              string strSiteName = Console.ReadLine();

   14:   

   15:              Console.WriteLine("Enter your document library name");

   16:              string strDocumentLibrary = Console.ReadLine();

   17:   

   18:              Console.WriteLine("Enter your group name");

   19:              string strGroup = Console.ReadLine();

   20:   

   21:              Assign(strSiteName, strDocumentLibrary, strGroup);

   22:   

   23:              Console.WriteLine("Done!");

   24:              Console.ReadLine();

   25:          }

   26:   

   27:          public static void Assign(string strSiteName, string strDocumentLibrary, string strGroup)

   28:          {

   29:              SPSite WebApp = new SPSite(strSiteName);

   30:              SPWeb Site = WebApp.OpenWeb();

   31:              SPList list = Site.Lists[strDocumentLibrary];

   32:              SPContentTypeCollection oContentTypes = list.ContentTypes;

   33:              String url = list.RootFolder.ServerRelativeUrl.ToString();

   34:   

   35:              foreach (SPListItem folder in list.Folders)

   36:              {

   37:                  WebApp.AllowUnsafeUpdates = true;

   38:                  Site.AllowUnsafeUpdates = true;

   39:   

   40:                  SPRoleDefinitionCollection roleDefinitions = Site.RoleDefinitions;

   41:                  SPRoleAssignmentCollection roleAssignments = folder.RoleAssignments;

   42:   

   43:                  SPGroup grp = Site.Groups[strGroup];

   44:                  SPRoleAssignment roleAssignment = new SPRoleAssignment(grp);

   45:                  SPRoleDefinitionBindingCollection roleDefBindings = roleAssignment.RoleDefinitionBindings;

   46:   

   47:                  roleDefBindings.Add(roleDefinitions["Contribute"]);

   48:                  roleAssignments.Add(roleAssignment);

   49:   

   50:                  WebApp.AllowUnsafeUpdates = false;

   51:                  Site.AllowUnsafeUpdates = false;

   52:              }

   53:              Site.Close();

   54:              WebApp.Close();

   55:              Site.Dispose();

   56:              WebApp.Dispose();

   57:          }

   58:      }

   59:  }

I have tested this code for a folder “test12” in “RFC” document library. The permission group which I added is “test1”.

Result

KEYWORDS:

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Permission inheritance, adding SharePoint group at each folder level in a document library