You will be able to Enable directory browsing with web.config.
1) create (or edit) the web.config file in your site's home directory
2) edit it as follows:
<directoryBrowse enabled="true" />
Note you will need to change the location path to equal the directory
name you want to enable directory browsing for. If you want to enable
it for the entire site, just remove the entire <location> and
Directory browsing allows site visitors to view a list of the files in a
directory if that directory has no default document in it. By default,
directory browsing is disabled.