How to open dll files to see what is written inside

Question

I lost the solution of class-library  can I open  dll file which is created by class-library

User · Answer

Open  dll file with visual studio  Or resource editor

User · Answer

I think you have downloaded the  NET Reflector  amp  this FileGenerator plugin http   filegenreflector codeplex com    If you do    Open up the Reflector exe   Go to View and click Add-Ins  In the Add-Ins window click Add     Then find the dll you have downloaded FileGenerator dll  witch came wth the FileGenerator plugin    Then close the Add-Ins window   Go to File and click Open and choose the dll that you want to decompile   After you have opend it  it will appear in the tree view   Go to Tools and click Generate Files Crtl Shift G    select the output directory and select appropriate settings as your wish    Click generate files    OR   use http   ilspy net

User · Answer

I use the Jetbrains Dot peek Software   you can try that too

User · Answer

you are better off with a decompiler like redgates  net reflector or jetbrains resharper decompiler  there are open source ones also like  http   www jetbrains com decompiler   http   ilspy net

User · Answer

Follow below steps       Go to Start Menu     Type Visual Studio Tool     Go to the folder above      Click on  Developer Command Prompt for VS 2013  in the case of VS 2013 or just  Visual Studio Command Prompt   in case of VS 2010     After command prompt loaded to screen type ILDASM EXE press ENTER    ILDASM window will open Drag the  dll file to window from your folder Or click on File- gt New Then Add required  dll  file    After above steps Mainfest and  dll file will appear  Double click on these files to see what it contains

User · Answer

Telerik s Just Decompile is  the best I ve used  It s free once you sign up with an email   enter link description here

User · Answer

dll files are archive files open with winzip 7zip etc  That isnt to say that all  dll files are archives you can save anything with the  dll extension however most windows  dll files are generated to be archives examples of this are windows twain 32 dll which is an archive file however twain dll is not if you look at twain dll you will see an MZ   as the first three notepad characters which denotes a Compiled C file program or part of a program  Whereas MZ seems to be an archive    Also most  exe files are archives mostly containing an icon image etc for the file and the windows installer packages as well they contain all the information the program needs to run images movies etc and also directories including installation information and plain text file    I have a game here game exe and it contains java class files an image a pointer directing the  exe to run a  bat file  Obviously your  bat file will run a javac call from the archive and run the game there is also a few  dll archives containing java class files also    autorun  ICON AUTORUN MINCRAFTLOGO ICO   standard icon redirect here  ico is an image file within a  dll file within a  exe file  So the image seen on the  exe file is the minecraft logo  This is in a file called autorun inf  Second example    discstarter      startpage Autostart Disk1 html     uselanguagestartpage 1     windowcaption Solid Edge     licensee Siemens PLM Software     productguid 05B227DF-DB00-4934-B3C8-40B7D8FAA54A     singleinstance 1     hidesplashscreen 1     noscrollbars 0     showstatusbar 1     splashscreentime 0     windowwidth 750     windowheight 775     buttondir Autostart     toolbarcolor 16777215     toolbar goback goforward gohome print exit      autorun      open autostart exe     icon Autostart ENGINE ICO   This is the solid edge autorun inf file contained in solidedge exe Autostart  is the Autostart dll directory  open autostart exe specifies the autostart exe file to run from within the original solidedge exe archive  Here is a sample program using the  dll  dynamic link library  files http   www flipcode com archives Creating And Using DLLs shtml   It also shows how they are created  As you can see the contents of the dll file is called by an exe file as I previously explained also there is a tutorial here http   msdn microsoft com en-us library ms235636 aspx and as i said before 7zip or winzip will open a dynamic link library as an archive as long as you have the  dll file  If the contents of the dynamic link library have been compiled obviously you need a program which can read the file   However since  dll files are by definition just archive library files the dll itself should be readable and not a compiled C C  file etc etc Basically  dll files are archives well should be when a  dll file is created in visual studio the dll is created and any information you store in the dll file is encrypted  Mostly this encryption is handled by visual studio itself and generally isn t edited by hand  When you read a  dll file contents as a  exe the contents are automatically decrypted  Now when we talk about compiling a program we are changing the contents into bytecode the machine easily interprets   This filesize would be smaller than the original file of the same contents  However the filesize is larger suggesting that the file has actually been encrypted  Probably to stop people reading their code  As a result the reading of  dll contents is termed decryption and not decompilation  Decompilation would convert the already compiled txt files to unreadable byte code  The use of standard  dll files is by definition not opensource because it involves the deliberate obfuscation of byte code

User · Answer

You cannot get the exact code  but you can get a decompiled version of it   The most popular  and best  tool is Reflector  but there are also other  Net decompilers  such as Dis      You can also decompile the IL using ILDASM  which comes bundled with the  Net Framework SDK Tools

[c#] How to open .dll files to see what is written inside?

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