protected static string GetContentType(string strFileName)
{
string strExtendName = strFileName.Substring(strFileName.LastIndexOf('.')); if (string.IsNullOrEmpty(strExtendName))
{
return "";
} string strRet = ""; switch (strExtendName) { case ".*": strRet = "application/octet-stream";break; case ".001": strRet = "application/x-001";break; case ".301": strRet = "application/x-301";break; case ".323": strRet = "text/h323" ;break; case ".906": strRet = "application/x-906" ;break; case ".907": strRet = "drawing/907" ;break; case ".a11": strRet = "application/x-a11";break; case ".acp": strRet = "audio/x-mei-aac" ;break; case ".ai": strRet = "application/postscript" ;break; case ".aif": strRet = "audio/aiff" ;break; case ".aifc": strRet = "audio/aiff" ;break; case ".aiff": strRet = "audio/aiff" ;break; case ".anv": strRet = "application/x-anv" ;break; case ".asa": strRet = "text/asa";break; case ".asf": strRet = "video/x-ms-asf";break; case ".asp": strRet = "text/asp";break; case ".asx": strRet = "video/x-ms-asf";break; case ".au": strRet = "audio/basic";break; case ".avi": strRet = "video/avi";break; case ".awf": strRet = "application/vnd.adobe.workflow";break; case ".biz": strRet = "text/xml";break; case ".bmp": strRet = "application/x-bmp";break; case ".bot": strRet = "application/x-bot";break; case ".c4t": strRet = "application/x-c4t";break; case ".c90": strRet = "application/x-c90";break; case ".cal": strRet = "application/x-cals";break; case ".cat": strRet = "application/vnd.ms-pki.seccat";break; case ".cdf": strRet = "application/x-netcdf";break; case ".cdr": strRet = "application/x-cdr";break; case ".cel": strRet = "application/x-cel";break; case ".cer": strRet = "application/x-x509-ca-cert";break; case ".cg4": strRet = "application/x-g4";break; case ".cgm": strRet = "application/x-cgm";break; case ".cit": strRet = "application/x-cit";break; case ".class": strRet = "java/*";break; case ".cml": strRet = "text/xml";break; case ".cmp": strRet = "application/x-cmp";break; case ".cmx": strRet = "application/x-cmx";break; case ".cot": strRet = "application/x-cot";break; case ".crl": strRet = "application/pkix-crl";break; case ".crt": strRet = "application/x-x509-ca-cert";break; case ".csi": strRet = "application/x-csi";break; case ".css": strRet = "text/css";break; case ".cut": strRet = "application/x-cut";break; case ".dbf": strRet = "application/x-dbf";break; case ".dbm": strRet = "application/x-dbm";break; case ".dbx": strRet = "application/x-dbx";break; case ".dcd": strRet = "text/xml";break; case ".dcx": strRet = "application/x-dcx";break; case ".der": strRet = "application/x-x509-ca-cert";break; case ".dgn": strRet = "application/x-dgn";break; case ".dib": strRet = "application/x-dib";break; case ".dll": strRet = "application/x-msdownload";break; case ".doc": strRet = "application/msword";break; case ".dot": strRet = "application/msword";break; case ".drw": strRet = "application/x-drw";break; case ".dtd": strRet = "text/xml";break; //case ".dwf": strRet = "Model/vnd.dwf";break; case ".dwf": strRet = "application/x-dwf";break; case ".dwg": strRet = "application/x-dwg";break; case ".dxb": strRet = "application/x-dxb";break; case ".dxf": strRet = "application/x-dxf";break; case ".edn": strRet = "application/vnd.adobe.edn";break; case ".emf": strRet = "application/x-emf";break; case ".eml": strRet = "message/rfc822";break; case ".ent": strRet = "text/xml";break; case ".epi": strRet = "application/x-epi";break; case ".eps": strRet = "application/x-ps";break; //case ".eps": strRet = "application/postscript";break; case ".etd": strRet = "application/x-ebx";break; case ".exe": strRet = "application/x-msdownload";break; case ".fax": strRet = "image/fax";break; case ".fdf": strRet = "application/vnd.fdf";break; case ".fif": strRet = "application/fractals";break; case ".fo": strRet = "text/xml";break; case ".frm": strRet = "application/x-frm";break; case ".g4": strRet = "application/x-g4";break; case ".gbr": strRet = "application/x-gbr";break; case ".gcd": strRet = "application/x-gcd";break; case ".gif": strRet = "image/gif";break; case ".gl2": strRet = "application/x-gl2";break; case ".gp4": strRet = "application/x-gp4";break; case ".hgl": strRet = "application/x-hgl";break; case ".hmr": strRet = "application/x-hmr";break; case ".hpg": strRet = "application/x-hpgl";break; case ".hpl": strRet = "application/x-hpl";break; case ".hqx": strRet = "application/mac-binhex40";break; case ".hrf": strRet = "application/x-hrf";break; case ".hta": strRet = "application/hta";break; case ".htc": strRet = "text/x-component";break; case ".htm": strRet = "text/html";break; case ".html": strRet = "text/html";break; case ".htt": strRet = "text/webviewhtml";break; case ".htx": strRet = "text/html";break; case ".icb": strRet = "application/x-icb";break; case ".ico": strRet = "image/x-icon";break; //case ".ico": strRet = "application/x-ico";break; case ".iff": strRet = "application/x-iff";break; case ".ig4": strRet = "application/x-g4";break; case ".igs": strRet = "application/x-igs";break; case ".iii": strRet = "application/x-iphone";break; case ".img": strRet = "application/x-img";break; case ".ins": strRet = "application/x-internet-signup";break; case ".isp": strRet = "application/x-internet-signup";break; case ".IVF": strRet = "video/x-ivf";break; case ".java": strRet = "java/*";break; case ".jfif": strRet = "image/jpeg";break; case ".jpe": strRet = "image/jpeg";break; //case ".jpe": strRet = "application/x-jpe";break; case ".jpeg": strRet = "image/jpeg";break; case ".jpg": strRet = "image/jpeg";break; //case ".jpg": strRet = "application/x-jpg";break; case ".js": strRet = "application/x-javascript";break; case ".jsp": strRet = "text/html";break; case ".la1": strRet = "audio/x-liquid-file";break; case ".lar": strRet = "application/x-laplayer-reg";break; case ".latex": strRet = "application/x-latex";break; case ".lavs": strRet = "audio/x-liquid-secure";break; case ".lbm": strRet = "application/x-lbm";break; case ".lmsff": strRet = "audio/x-la-lms";break; case ".ls": strRet = "application/x-javascript";break; case ".ltr": strRet = "application/x-ltr";break; case ".m1v": strRet = "video/x-mpeg";break; case ".m2v": strRet = "video/x-mpeg";break; case ".m3u": strRet = "audio/mpegurl";break; case ".m4e": strRet = "video/mpeg4";break; case ".mac": strRet = "application/x-mac";break; case ".man": strRet = "application/x-troff-man";break; case ".math": strRet = "text/xml";break; case ".mdb": strRet = "application/msaccess";break; //case ".mdb": strRet = "application/x-mdb";break; case ".mfp": strRet = "application/x-shockwave-flash";break; case ".mht": strRet = "message/rfc822";break; case ".mhtml": strRet = "message/rfc822";break; case ".mi": strRet = "application/x-mi";break; case ".mid": strRet = "audio/mid";break; case ".midi": strRet = "audio/mid";break; case ".mil": strRet = "application/x-mil";break; case ".mml": strRet = "text/xml";break; case ".mnd": strRet = "audio/x-musicnet-download";break; case ".mns": strRet = "audio/x-musicnet-stream";break; case ".mocha": strRet = "application/x-javascript";break; case ".movie": strRet = "video/x-sgi-movie";break; case ".mp1": strRet = "audio/mp1";break; case ".mp2": strRet = "audio/mp2";break; case ".mp2v": strRet = "video/mpeg";break; case ".mp3": strRet = "audio/mp3";break; case ".mp4": strRet = "video/mpeg4";break; case ".mpa": strRet = "video/x-mpg";break; case ".mpd": strRet = "application/vnd.ms-project";break; case ".mpe": strRet = "video/x-mpeg";break; case ".mpeg": strRet = "video/mpg";break; case ".mpg": strRet = "video/mpg";break; case ".mpga": strRet = "audio/rn-mpeg";break; case ".mpp": strRet = "application/vnd.ms-project";break; case ".mps": strRet = "video/x-mpeg";break; case ".mpt": strRet = "application/vnd.ms-project";break; case ".mpv": strRet = "video/mpg";break; case ".mpv2": strRet = "video/mpeg";break; case ".mpw": strRet = "application/vnd.ms-project";break; case ".mpx": strRet = "application/vnd.ms-project";break; case ".mtx": strRet = "text/xml";break; case ".mxp": strRet = "application/x-mmxp";break; case ".net": strRet = "image/pnetvue";break; case ".nrf": strRet = "application/x-nrf";break; case ".nws": strRet = "message/rfc822";break; case ".odc": strRet = "text/x-ms-odc";break; case ".out": strRet = "application/x-out";break; case ".p10": strRet = "application/pkcs10";break; case ".p12": strRet = "application/x-pkcs12";break; case ".p7b": strRet = "application/x-pkcs7-certificates";break; case ".p7c": strRet = "application/pkcs7-mime";break; case ".p7m": strRet = "application/pkcs7-mime";break; case ".p7r": strRet = "application/x-pkcs7-certreqresp";break; case ".p7s": strRet = "application/pkcs7-signature";break; case ".pc5": strRet = "application/x-pc5";break; case ".pci": strRet = "application/x-pci";break; case ".pcl": strRet = "application/x-pcl";break; case ".pcx": strRet = "application/x-pcx";break; case ".pdf": strRet = "application/pdf";break; case ".pdx": strRet = "application/vnd.adobe.pdx";break; case ".pfx": strRet = "application/x-pkcs12";break; case ".pgl": strRet = "application/x-pgl";break; case ".pic": strRet = "application/x-pic";break; case ".pko": strRet = "application/vnd.ms-pki.pko";break; case ".pl": strRet = "application/x-perl";break; case ".plg": strRet = "text/html";break; case ".pls": strRet = "audio/scpls";break; case ".plt": strRet = "application/x-plt";break; case ".png": strRet = "image/png";break; case ".pot": strRet = "application/vnd.ms-powerpoint";break; case ".ppa": strRet = "application/vnd.ms-powerpoint";break; case ".ppm": strRet = "application/x-ppm";break; case ".pps": strRet = "application/vnd.ms-powerpoint";break; case ".ppt": strRet = "application/vnd.ms-powerpoint";break; case ".pr": strRet = "application/x-pr";break; case ".prf": strRet = "application/pics-rules";break; case ".prn": strRet = "application/x-prn";break; case ".prt": strRet = "application/x-prt";break; case ".ps": strRet = "application/x-ps";break; case ".ptn": strRet = "application/x-ptn";break; case ".pwz": strRet = "application/vnd.ms-powerpoint";break; case ".r3t": strRet = "text/vnd.rn-realtext3d";break; case ".ra": strRet = "audio/vnd.rn-realaudio";break; case ".ram": strRet = "audio/x-pn-realaudio";break; case ".ras": strRet = "application/x-ras";break; case ".rat": strRet = "application/rat-file";break; case ".rdf": strRet = "text/xml";break; case ".rec": strRet = "application/vnd.rn-recording";break; case ".red": strRet = "application/x-red";break; case ".rgb": strRet = "application/x-rgb";break; case ".rjs": strRet = "application/vnd.rn-realsystem-rjs";break; case ".rjt": strRet = "application/vnd.rn-realsystem-rjt";break; case ".rlc": strRet = "application/x-rlc";break; case ".rle": strRet = "application/x-rle";break; case ".rm": strRet = "application/vnd.rn-realmedia";break; case ".rmf": strRet = "application/vnd.adobe.rmf";break; case ".rmi": strRet = "audio/mid";break; case ".rmj": strRet = "application/vnd.rn-realsystem-rmj";break; case ".rmm": strRet = "audio/x-pn-realaudio";break; case ".rmp": strRet = "application/vnd.rn-rn_music_package";break; case ".rms": strRet = "application/vnd.rn-realmedia-secure";break; case ".rmvb": strRet = "application/vnd.rn-realmedia-vbr";break; case ".rmx": strRet = "application/vnd.rn-realsystem-rmx";break; case ".rnx": strRet = "application/vnd.rn-realplayer";break; case ".rp": strRet = "image/vnd.rn-realpix";break; case ".rpm": strRet = "audio/x-pn-realaudio-plugin";break; case ".rsml": strRet = "application/vnd.rn-rsml";break; case ".rt": strRet = "text/vnd.rn-realtext";break; case ".rtf": strRet = "application/x-rtf";break; case ".rv": strRet = "video/vnd.rn-realvideo";break; case ".sam": strRet = "application/x-sam";break; case ".sat": strRet = "application/x-sat";break; case ".sdp": strRet = "application/sdp";break; case ".sdw": strRet = "application/x-sdw";break; case ".sit": strRet = "application/x-stuffit";break; case ".slb": strRet = "application/x-slb";break; case ".sld": strRet = "application/x-sld";break; case ".slk": strRet = "drawing/x-slk";break; case ".smi": strRet = "application/smil";break; case ".smil": strRet = "application/smil";break; case ".smk": strRet = "application/x-smk";break; case ".snd": strRet = "audio/basic";break; case ".sol": strRet = "text/plain";break; case ".sor": strRet = "text/plain";break; case ".spc": strRet = "application/x-pkcs7-certificates";break; case ".spl": strRet = "application/futuresplash";break; case ".spp": strRet = "text/xml";break; case ".ssm": strRet = "application/streamingmedia";break; case ".sst": strRet = "application/vnd.ms-pki.certstore";break; case ".stl": strRet = "application/vnd.ms-pki.stl";break; case ".stm": strRet = "text/html";break; case ".sty": strRet = "application/x-sty";break; case ".svg": strRet = "text/xml";break; case ".swf": strRet = "application/x-shockwave-flash";break; case ".tdf": strRet = "application/x-tdf";break; case ".tg4": strRet = "application/x-tg4";break; case ".tga": strRet = "application/x-tga";break; case ".tif": strRet = "image/tiff";break; case ".tiff": strRet = "image/tiff";break; case ".tld": strRet = "text/xml";break; case ".top": strRet = "drawing/x-top";break; case ".torrent": strRet = "application/x-bittorrent";break; case ".tsd": strRet = "text/xml";break; case ".txt": strRet = "text/plain";break; case ".uin": strRet = "application/x-icq";break; case ".uls": strRet = "text/iuls";break; case ".vcf": strRet = "text/x-vcard";break; case ".vda": strRet = "application/x-vda";break; case ".vdx": strRet = "application/vnd.visio";break; case ".vml": strRet = "text/xml";break; case ".vpg": strRet = "application/x-vpeg005";break; case ".vsd": strRet = "application/vnd.visio";break; case ".vss": strRet = "application/vnd.visio";break; case ".vst": strRet = "application/vnd.visio";break; case ".vsw": strRet = "application/vnd.visio";break; case ".vsx": strRet = "application/vnd.visio";break; case ".vtx": strRet = "application/vnd.visio";break; case ".vxml": strRet = "text/xml";break; case ".wav": strRet = "audio/wav";break; case ".wax": strRet = "audio/x-ms-wax";break; case ".wb1": strRet = "application/x-wb1";break; case ".wb2": strRet = "application/x-wb2";break; case ".wb3": strRet = "application/x-wb3";break; case ".wbmp": strRet = "image/vnd.wap.wbmp";break; case ".wiz": strRet = "application/msword";break; case ".wk3": strRet = "application/x-wk3";break; case ".wk4": strRet = "application/x-wk4";break; case ".wkq": strRet = "application/x-wkq";break; case ".wks": strRet = "application/x-wks";break; case ".wm": strRet = "video/x-ms-wm";break; case ".wma": strRet = "audio/x-ms-wma";break; case ".wmd": strRet = "application/x-ms-wmd";break; case ".wmf": strRet = "application/x-wmf";break; case ".wml": strRet = "text/vnd.wap.wml";break; case ".wmv": strRet = "video/x-ms-wmv";break; case ".wmx": strRet = "video/x-ms-wmx";break; case ".wmz": strRet = "application/x-ms-wmz";break; case ".wp6": strRet = "application/x-wp6";break; case ".wpd": strRet = "application/x-wpd";break; case ".wpg": strRet = "application/x-wpg";break; case ".wpl": strRet = "application/vnd.ms-wpl";break; case ".wq1": strRet = "application/x-wq1";break; case ".wr1": strRet = "application/x-wr1";break; case ".wri": strRet = "application/x-wri";break; case ".wrk": strRet = "application/x-wrk";break; case ".ws": strRet = "application/x-ws";break; case ".ws2": strRet = "application/x-ws";break; case ".wsc": strRet = "text/scriptlet";break; case ".wsdl": strRet = "text/xml";break; case ".wvx": strRet = "video/x-ms-wvx";break; case ".xdp": strRet = "application/vnd.adobe.xdp";break; case ".xdr": strRet = "text/xml";break; case ".xfd": strRet = "application/vnd.adobe.xfd";break; case ".xfdf": strRet = "application/vnd.adobe.xfdf";break; case ".xhtml": strRet = "text/html";break; case ".xls": strRet = "application/vnd.ms-excel";break; case ".xlw": strRet = "application/x-xlw";break; case ".xml": strRet = "text/xml";break; case ".xpl": strRet = "audio/scpls";break; case ".xq": strRet = "text/xml";break; case ".xql": strRet = "text/xml";break; case ".xquery": strRet = "text/xml";break; case ".xsd": strRet = "text/xml";break; case ".xsl": strRet = "text/xml";break; case ".xslt": strRet = "text/xml";break; case ".xwd": strRet = "application/x-xwd";break; case ".x_b": strRet = "application/x-x_b";break; case ".x_t": strRet = "application/x-x_t"; break; } return strRet;
} 
