http://servername

SPSite site = new SPSite(“http://docholder:41653/”);
SPWebCollection collWebsites = site.AllWebs;
foreach (SPWeb oWebsite in collWebsites)
{
SPFolderCollection collFolders = oWebsite.Folders;

foreach (SPFolder oFolder in collFolders)
{
SPFileCollection collFiles = oFolder.Files;

long lngTotalFileSize = 0;

for (int intIndex = 0; intIndex < collFiles.Count; intIndex++)
{
lngTotalFileSize += collFiles[intIndex].Length;
}

Label1.Text += " Web: " +
oWebsite.Name
+ " Folder: " +
oFolder.Name + " Number: "
+ oFolder.Files.Count +
" Size: " + lngTotalFileSize + "”;
}
oWebsite.Dispose();
}