檔案對應 File Content Tyoe

[範例程式碼]

//取得檔案ContentType

private static string GetContentTypeForFileName(string filePath) 
{ 

   //filePath為檔案路徑含檔名(ex:D:\file\123.txt)
    string ext = System.IO.Path.GetExtension(filePath); 
    using (Microsoft.Win32.RegistryKey registryKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext)) 
    { 
        if (registryKey == null)
       {
           return null;
       }
       var value = registryKey.GetValue("Content Type");
       return (value == null) ? string.Empty : value.ToString();
    }
}

[附檔名與ContentType對應表]

Application	MIME Type	File Extension
Corel Envoy	application/envoy	evy
fractal image file	application/fractals	fif
Windows print spool file	application/futuresplash	spl
HTML application	application/hta	hta
Atari ST Program	application/internet-property-stream	acx
BinHex encoded file	application/mac-binhex40	hqx
Word document	application/msword	doc
Word document template	application/msword	dot
	application/octet-stream	*
binary disk image	application/octet-stream	bin
Java class file	application/octet-stream	class
Disk Masher image	application/octet-stream	dms
executable file	application/octet-stream	exe
LHARC compressed archive	application/octet-stream	lha
LZH compressed file	application/octet-stream	lzh
CALS raster image	application/oda	oda
ActiveX script	application/olescript	axs
Acrobat file	application/pdf	pdf
Outlook profile file	application/pics-rules	prf
certificate request file	application/pkcs10	p10
certificate revocation list file	application/pkix-crl	crl
Adobe Illustrator file	application/postscript	ai
postscript file	application/postscript	eps
postscript file	application/postscript	ps
rich text format file	application/rtf	rtf
set payment initiation	application/set-payment-initiation	setpay
set registration initiation	application/set-registration-initiation	setreg
Excel Add-in file	application/vnd.ms-excel	xla
Excel chart	application/vnd.ms-excel	xlc
Excel macro	application/vnd.ms-excel	xlm
Excel spreadsheet	application/vnd.ms-excel	xls
Excel template	application/vnd.ms-excel	xlt
Excel worspace	application/vnd.ms-excel	xlw
Outlook mail message	application/vnd.ms-outlook	msg
serialized certificate store file	application/vnd.ms-pkicertstore	sst
Windows catalog file	application/vnd.ms-pkiseccat	cat
stereolithography file	application/vnd.ms-pkistl	stl
PowerPoint template	application/vnd.ms-powerpoint	pot
PowerPoint slide show	application/vnd.ms-powerpoint	pps
PowerPoint presentation	application/vnd.ms-powerpoint	ppt
Microsoft Project file	application/vnd.ms-project	mpp
WordPerfect macro	application/vnd.ms-works	wcm
Microsoft Works database	application/vnd.ms-works	wdb
Microsoft Works spreadsheet	application/vnd.ms-works	wks
Microsoft Works word processsor document	application/vnd.ms-works	wps
Windows help file	application/winhlp	hlp
binary CPIO archive	application/x-bcpio	bcpio
computable document format file	application/x-cdf	cdf
Unix compressed file	application/x-compress	z
gzipped tar file	application/x-compressed	tgz
Unix CPIO archive	application/x-cpio	cpio
Photoshop custom shapes file	application/x-csh	csh
Kodak RAW image file	application/x-director	dcr
Adobe Director movie	application/x-director	dir
Macromedia Director movie	application/x-director	dxr
device independent format file	application/x-dvi	dvi
Gnu tar archive	application/x-gtar	gtar
Gnu zipped archive	application/x-gzip	gz
hierarchical data format file	application/x-hdf	hdf
internet settings file	application/x-internet-signup	ins
IIS internet service provider settings	application/x-internet-signup	isp
ARC+ architectural file	application/x-iphone	iii
JavaScript file	application/x-javascript	js
LaTex document	application/x-latex	latex
Microsoft Access database	application/x-msaccess	mdb
Windows CardSpace file	application/x-mscardfile	crd
CrazyTalk clip file	application/x-msclip	clp
dynamic link library	application/x-msdownload	dll
Microsoft media viewer file	application/x-msmediaview	m13
Steuer2001 file	application/x-msmediaview	m14
multimedia viewer book source file	application/x-msmediaview	mvb
Windows meta file	application/x-msmetafile	wmf
Microsoft Money file	application/x-msmoney	mny
Microsoft Publisher file	application/x-mspublisher	pub
Turbo Tax tax schedule list	application/x-msschedule	scd
FTR media file	application/x-msterminal	trm
Microsoft Write file	application/x-mswrite	wri
computable document format file	application/x-netcdf	cdf
Mastercam numerical control file	application/x-netcdf	nc
MSX computers archive format	application/x-perfmon	pma
performance monitor counter file	application/x-perfmon	pmc
process monitor log file	application/x-perfmon	pml
Avid persistant media record file	application/x-perfmon	pmr
Pegasus Mail draft stored message	application/x-perfmon	pmw
personal information exchange file	application/x-pkcs12	p12
PKCS #12 certificate file	application/x-pkcs12	pfx
PKCS #7 certificate file	application/x-pkcs7-certificates	p7b
software publisher certificate file	application/x-pkcs7-certificates	spc
certificate request response file	application/x-pkcs7-certreqresp	p7r
PKCS #7 certificate file	application/x-pkcs7-mime	p7c
digitally encrypted message	application/x-pkcs7-mime	p7m
digitally signed email message	application/x-pkcs7-signature	p7s
Bash shell script	application/x-sh	sh
Unix shar archive	application/x-shar	shar
Flash file	application/x-shockwave-flash	swf
Stuffit archive file	application/x-stuffit	sit
system 5 release 4 CPIO file	application/x-sv4cpio	sv4cpio
system 5 release 4 CPIO checksum data	application/x-sv4crc	sv4crc
consolidated Unix file archive	application/x-tar	tar
Tcl script	application/x-tcl	tcl
LaTeX source document	application/x-tex	tex
LaTeX info document	application/x-texinfo	texi
LaTeX info document	application/x-texinfo	texinfo
unformatted manual page	application/x-troff	roff
Turing source code file	application/x-troff	t
TomeRaider 2 ebook file	application/x-troff	tr
Unix manual	application/x-troff-man	man
readme text file	application/x-troff-me	me
3ds Max script file	application/x-troff-ms	ms
uniform standard tape archive format file	application/x-ustar	ustar
source code	application/x-wais-source	src
internet security certificate	application/x-x509-ca-cert	cer
security certificate	application/x-x509-ca-cert	crt
DER certificate file	application/x-x509-ca-cert	der
public key security object	application/ynd.ms-pkipko	pko
zipped file	application/zip	zip

Sound Files

Application	MIME Type	File Extension
audio file	audio/basic	au
sound file	audio/basic	snd
midi file	audio/mid	mid
media processing server studio	audio/mid	rmi
MP3 file	audio/mpeg	mp3
audio interchange file format	audio/x-aiff	aif
compressed audio interchange file	audio/x-aiff	aifc
audio interchange file format	audio/x-aiff	aiff
media playlist file	audio/x-mpegurl	m3u
Real Audio file	audio/x-pn-realaudio	ra
Real Audio metadata file	audio/x-pn-realaudio	ram
WAVE audio file	audio/x-wav	wav

Image Files

Application	MIME Type	File Extension
Bitmap	image/bmp	bmp
compiled source code	image/cis-cod	cod
graphic interchange format	image/gif	gif
image file	image/ief	ief
JPEG image	image/jpeg	jpe
JPEG image	image/jpeg	jpeg
JPEG image	image/jpeg	jpg
JPEG file interchange format	image/pipeg	jfif
scalable vector graphic	image/svg+xml	svg
TIF image	image/tiff	tif
TIF image	image/tiff	tiff
Sun raster graphic	image/x-cmu-raster	ras
Corel metafile exchange image file	image/x-cmx	cmx
icon	image/x-icon	ico
portable any map image	image/x-portable-anymap	pnm
portable bitmap image	image/x-portable-bitmap	pbm
portable graymap image	image/x-portable-graymap	pgm
portable pixmap image	image/x-portable-pixmap	ppm
RGB bitmap	image/x-rgb	rgb
X11 bitmap	image/x-xbitmap	xbm
X11 pixmap	image/x-xpixmap	xpm
X-Windows dump image	image/x-xwindowdump	xwd

Mail Message Files

Application	MIME Type	File Extension
MHTML web archive	message/rfc822	mht
MIME HTML file	message/rfc822	mhtml
Windows Live Mail newsgroup file	message/rfc822	nws

Text Files

Application	MIME Type	File Extension
Cascading Style Sheet	text/css	css
H.323 internet telephony file	text/h323	323
HTML file	text/html	htm
HTML file	text/html	html
Exchange streaming media file	text/html	stm
NetMeeting user location service file	text/iuls	uls
BASIC source code file	text/plain	bas
C/C++ source code file	text/plain	c
C/C++/Objective C header file	text/plain	h
text file	text/plain	txt
rich text file	text/richtext	rtx
Scitext continuous tone file	text/scriptlet	sct
tab separated values file	text/tab-separated-values	tsv
hypertext template file	text/webviewhtml	htt
HTML component file	text/x-component	htc
TeX font encoding file	text/x-setext	etx
vCard file	text/x-vcard	vcf

Video Files

Application	MIME Type	File Extension
MPEG-2 audio file	video/mpeg	mp2
MPEG-2 audio file	video/mpeg	mpa
MPEG movie file	video/mpeg	mpe
MPEG movie file	video/mpeg	mpeg
MPEG movie file	video/mpeg	mpg
MPEG-2 video stream	video/mpeg	mpv2
Apple QuickTime movie	video/quicktime	mov
Apple QuickTime movie	video/quicktime	qt
Logos library system file	video/x-la-asf	lsf
streaming media shortcut	video/x-la-asf	lsx
advanced systems format file	video/x-ms-asf	asf
ActionScript remote document	video/x-ms-asf	asr
Microsoft ASF redirector file	video/x-ms-asf	asx
audio video interleave file	video/x-msvideo	avi
Apple QuickTime movie	video/x-sgi-movie	movie

[參考]

網路上有人整理的對應

http://webdesign.about.com/od/multimedia/a/mime-types-by-content-type.htm