Index_U

U

unmanaged code, 279

upgrading to ASP.NET. See moving to ASP.NET

uploading files, 46–47

URL authorization, 216–218

User controls

caching, 31, 164–167, 284

CurrentTime.ascx, 30

FavoriteColor.ascx, 31

IncludeCurrentTime.aspx, 30

partial page caching of, 164–167

property setters in, 31–32

purpose of, 30

updating performance hit, 284

user interfaces, mobile, 91

user names, storing, 211

User-Agent headers

caching, 147–148

mobile browser configuration with, 99–102