c# - How to get the type of data from a URL -



c# - How to get the type of data from a URL -

after implementing basic version of simple downloader, have spent few hours googling know how type of url .mp3,.mp4 etc.for sites such daily motion etc who's url don't have appended @ end.this because downloader works these types link without specific types makes download kb's file having nil play.

here code determine content-type decide *.extension downloading:

webclient mywebclient = new webclient(); string datastring = mywebclient.downloadstring("http://www.dailymotion.com/video/x1viyeu_pakistani-actress-meera-reema-saima-dance-on-faisal-ahmed-music-album-launch_news"); namevaluecollection headers = mywebclient.responseheaders; foreach (string key in headers.allkeys) { console.writeline("header:{0},value:{1}", key, headers[key]); }

it returned me list of outputs on console among line was:

header:content-type,value:text/html;charset=utf-8

now want hear how help me counter issue described.

suggestions please

here code downloader

private void downloadbtn_click(object sender, eventargs e) { webclient mywebclient = new webclient(); //declarations string objects string downloadurl, path; //raw url taken user downloadurl = this.downloadurl.text; path = this.savepath.text; uri tmp = new uri(downloadurl); string endpathfilename = tmp.segments.last(); path = path + @"\" + endpathfilename; //downloads file using async method mywebclient.downloadfileasync(tmp, path); downloadbtn.text = "download started"; downloadbtn.enabled = false; mywebclient.downloadprogresschanged += new downloadprogresschangedeventhandler(client_downloadprogresschanged); mywebclient.downloadfilecompleted += new asynccompletedeventhandler(client_downloadfilecompleted); }

usually there content-type header can give hint of file type expect.

many times server provide info regarding filename - see this so on how done on (php) server side.

c#

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more