I wrote the following code awhile back to export files from a corrupt site.

I also found it handy to calculate the size of a web (And see where the biggest web is in a site collection) to get around the following : (Error Messages When You Delete or Rename a Folder or Site in Windows SharePoint Services http://support.microsoft.com/default.aspx?scid=kb;en-us;827930 )

Hope this helps you, and you can use it for other apps as well!

Keith:

// BEGIN Sample.cs

using System;

using Microsoft.SharePoint;

using System.IO;

using System.Collections;

namespace ExportWebFiles

   class AppClass

      static string m_strExportDir = null;

      static bool m_RecurseWebs = false;

      static bool m_RecurseFolders = false;

      static void Main(string[] args)

         // Assume that the first argument is a valid URL

         SPSite siteColl = new SPSite(args[0]);

         // For sample purposes, let's recurse everything

         // You could make this an arg

         m_RecurseWebs = true;

         // recurse ALL folders found on the web.

         // You could make this an arg

         m_RecurseFolders = true;

         // Get the path to dump the files to if we want to export the files, otherwise

         // this is a good code template to start from to file level analysis on your webs

         if(args.Length > 1 && (args[1].ToLower().CompareTo("-export")) == 0)

         // You could use this code to run through all the files in every folder

         // on the web, to calculate the total size of the files in the web.

         // something like the following:

         long lTotalSize = 0;

         // Kick it off

      static long GetWebDetails(SPWeb web)

         long lWebTotal = 0;

         // enumerate over all the folders on the web

         foreach(SPFolder folder in web.Folders)

         // Do the same for all subwebs

         if(m_RecurseWebs)

            foreach(SPWeb subweb in web.Webs)

         return lWebTotal;

      static long GetFolderDetails(SPFolder folder)

         string strPath = null;

         long lFolderSize = 0;

         // If we're exporting the files from the web to the local file system,

         // create the appropriate file system folder

         if(m_strExportDir != null)

         foreach(SPFile file in folder.Files)

            // If we're exporting, stream out the files.

            if(m_strExportDir != null)

               string sFileLoc = m_strExportDir + strPath + "\\" + file.Name;

               byte[] binFile = file.OpenBinary();

               FileStream fs = new FileStream(sFileLoc,FileMode.OpenOrCreate,FileAccess.Write);

         // You could use this code to run through all the files in every folder

         // on the web, to calculate the total size of the files in the web.

         // something like the following:

         if(m_RecurseFolders)

            foreach(SPFolder subfolder in folder.SubFolders)

         return lFolderSize;

      // Break apart the URL and make a File System directory heirarchy from it if needed.

      static string CheckPathAndCreate(string ServerRelativeUrl)

         string strPath;

         // ServerRelativeUrl will begin with "/" so we'll be cool to just append it onto m_strExportDir

         return strPath;