Download SharePoint List Attachments

Here is a simple code sample for downloading SharePoint List Item attachments. When the code is run all attachments are downloaded. Subfolders are created based on the List Item ID.

Code Sample

namespace SharePoint_List_Attachments

{

    using System;

    using System.IO;

    using Microsoft.SharePoint;

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                DownloadListAttachments(@"http://myeifmossdev:2222//", "TestList", @"C:\SharePoint\Attachments\");

            }

            catch (Exception ex)

            {

                //TODO: Handle exception

            }

        }

        public static void DownloadListAttachments(string siteUrl, string listName, string downloadLocation)

        {

            string downloadItemLocation = string.Empty;

            using (SPSite site = new SPSite(siteUrl))

            {

                using (SPWeb web = site.OpenWeb())

                {

                    foreach (SPFolder folder in web.Folders["Lists"].SubFolders[listName].SubFolders["Attachments"].SubFolders)

                    {

                        foreach (SPFile file in folder.Files)

                        {

                            byte[] binFile = file.OpenBinary();

                            downloadItemLocation = downloadLocation + "\\" + folder.Name + "\\";

                            if (!Directory.Exists(downloadItemLocation))

                            {

                                Directory.CreateDirectory(downloadItemLocation);

                            }

                            System.IO.FileStream fstream =

                            System.IO.File.Create(downloadItemLocation + file.Name);

                            fstream.Write(binFile, 0, binFile.Length);

                        }

                    }

                }

            }

        }

    }

}

 Screenshots

References  
How to programmatically download attachments from list items in Windows SharePoint Services