Cannot implicitly convert type 'System.Web.HttpPostedFile' to 'System.Web.HttpPostedFileBase'

http://stackoverflow.com/questions/3071902/cannot-implicitly-convert-type-system-web-httppostedfile-to-system-web-httppo

A quick peek at Reflector indicates that

HttpPostedFileWrapper

inherits
from

HttpPostedFileBase

and
accepts an

HttpPostedFile

in
the constructor:

foreach (string inputTagName in HttpContext.Current.Request.Files)
{
HttpPostedFileBase filebase =
new HttpPostedFileWrapper(HttpContext.Current.Request.Files[inputTagName]);

if (filebase.ContentLength > 0)
{
//...

TheVillageIdiot brings up a great point about the better looping construct, and it will work for you if you're scope exposes the

Request

property
of the current HTTP context (e.g. on a

Page

,
but not in

Global.asax

):

foreach (HttpPostedFile file in Request.Files)
{
HttpPostedFileBase filebase = new HttpPostedFileWrapper(file);
// ..

If you have LINQ available, you could use that as well:

var files = Request.Files.Cast<HttpPostedFile>()
.Select(file => new HttpPostedFileWrapper(file))
.Where(file => file.ContentLength > 0
&& file.ContentType.StartsWith("image/"));

foreach (var file in files)
{
SaveNonAutoExtractedThumbnails(doc, file);
}