Run Command Prompt Commands

Question

Is there any way to run command prompt commands from within a C  application   If so how would I do the following   copy  b Image1 jpg   Archive rar Image2 jpg   This basically embeds an RAR file within JPG image   I was just wondering if there was a way to do this automatically in C

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var proc1   new ProcessStartInfo    string anyCommand   proc1 UseShellExecute   true   proc1 WorkingDirectory     C  Windows System32    proc1 FileName     C  Windows System32 cmd exe   proc1 Verb    runas   proc1 Arguments     c   anyCommand  proc1 WindowStyle   ProcessWindowStyle Hidden  Process Start proc1

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you can use simply write the code in a  bat format extension  the code of the batch file    c   copy  b Image1 jpg   Archive rar Image2 jpg  use this c  code    Process Start  file name bat

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This may be a bit of a read so im sorry in advance  And this is my tried and tested way of doing this  there may be a simpler way but this is from me throwing code at a wall and seeing what stuck If it can be done with a batch file then the maybe over complicated work around is have c  write a  bat file and run it  If you want user input you could place the input into a variable and have c  write it into the file  it will take trial and error with this way because its like controlling a puppet with another puppet  here is an example  In this case the function is for a push button in windows forum app that clears the print queue  using System IO  using System      public static void ClearPrintQueue                    this is the path the document or in our case batch file will be placed         string docPath            Environment GetFolderPath Environment SpecialFolder MyDocuments             this is the path process start usues         string path1   docPath    quot   Test bat quot               these are the batch commands            remember its  quot  quot   the comma separates the lines         string   lines                          quot  echo off quot                quot net stop spooler quot                quot del  systemroot   System32  spool  Printers     Q quot                quot net start spooler quot                 this deletes the file              quot del   quot   f0  quot  quot    do not put a comma on the last line                       this writes the string to the file         using  StreamWriter outputFile   new StreamWriter Path Combine docPath   quot test bat quot                             This writes the file line by line             foreach  string line in lines                  outputFile WriteLine line                     System Diagnostics Process Start path1           IF you want user input then you could try something like this  This is for setting the computer IP as static but asking the user what the IP  gateway  and dns server is  you will need this for it to work public static void SetIPStatic           These open pop up boxes which ask for user input         string STATIC   Microsoft VisualBasic Interaction InputBox  quot Whats the static IP  quot    quot  quot    quot  quot   100  100           string SUBNET   Microsoft VisualBasic Interaction InputBox  quot Whats the Subnet  Press enter for default  quot    quot 255 255 255 0 quot    quot  quot   100  100           string DEFAULTGATEWAY   Microsoft VisualBasic Interaction InputBox  quot Whats the Default gateway  quot    quot  quot    quot  quot   100  100           string DNS   Microsoft VisualBasic Interaction InputBox  quot Whats the DNS server IP  Input required  8 8 4 4 has already been set as secondary  quot    quot  quot    quot  quot   100  100                this is the path the document or in our case batch file will be placed         string docPath            Environment GetFolderPath Environment SpecialFolder MyDocuments             this is the path process start usues         string path1   docPath    quot   Test bat quot               these are the batch commands            remember its  quot  quot   the comma separates the lines         string   lines                          quot SETLOCAL EnableDelayedExpansion quot                quot SET adapterName  quot                quot FOR  F   quot tokens   delims    quot    a IN   IPCONFIG    FIND  I   quot ETHERNET ADAPTER  quot    DO   quot                quot SET adapterName   a quot                quot REM Removes   quot Ethernet adapter  quot  from the front of the adapter name quot                quot SET adapterName  adapterName  17  quot                quot REM Removes the colon from the end of the adapter name quot                quot SET adapterName  adapterName  0 -1  quot     the variables that were set before are used here              quot netsh interface ipv4 set address name   quot  adapterName   quot  static  quot    STATIC    quot   quot    STATIC    quot   quot    DEFAULTGATEWAY               quot netsh interface ipv4 set dns name   quot  adapterName   quot  static  quot    DNS    quot  primary quot                quot netsh interface ipv4 add dns name   quot  adapterName   quot  8 8 4 4 index 2 quot                quot   quot                quot ipconfig  flushdns quot                quot ipconfig  registerdns quot                quot  EOF quot                quot DEL   quot   f0  quot  quot                quot  quot                        this writes the string to the file         using  StreamWriter outputFile   new StreamWriter Path Combine docPath   quot test bat quot                             This writes the file line by line             foreach  string line in lines                  outputFile WriteLine line                     System Diagnostics Process Start path1           Like I said  It may be a little overcomplicated but it never fails unless I write the batch commands wrong

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Tried  RameshVel solution but I could not pass arguments in my console application  If anyone experiences the same problem here is a solution   using System Diagnostics   Process cmd   new Process    cmd StartInfo FileName    cmd exe   cmd StartInfo RedirectStandardInput   true  cmd StartInfo RedirectStandardOutput   true  cmd StartInfo CreateNoWindow   true  cmd StartInfo UseShellExecute   false  cmd Start     cmd StandardInput WriteLine  echo Oscar    cmd StandardInput Flush    cmd StandardInput Close    cmd WaitForExit    Console WriteLine cmd StandardOutput ReadToEnd

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Though technically this doesn t directly answer question posed  it does answer the question of how to do what the original poster wanted to do  combine files   If anything  this is a post to help newbies understand what Instance Hunter and Konstantin are talking about   This is the method I use to combine files  in this case a jpg and a zip    Note that I create a buffer that gets filled with the content of the zip file  in small chunks rather than in one big read operation   and then the buffer gets written to the back of the jpg file until the end of the zip file is reached   private void CombineFiles string jpgFileName  string zipFileName        using  Stream original   new FileStream jpgFileName  FileMode Append                 using  Stream extra   new FileStream zipFileName  FileMode Open  FileAccess Read                         var buffer   new byte 32   1024                int blockSize              while   blockSize   extra Read buffer  0  buffer Length    gt  0                                original Write buffer  0  blockSize

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You can achieve this by using the following method  as mentioned in other answers    strCmdText      C some command   Process Start  CMD exe   strCmdText     When I tried the methods listed above I found that my custom command did not work using the syntax of some of the answers above   I found out more complex commands need to be encapsulated in quotes to work   string strCmdText  strCmdText      C cd     path      amp  amp  composer update  amp  amp  composer install -o    Process Start  CMD exe   strCmdText

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You can do this using CliWrap in one line   var stdout   new Cli  cmd             Execute  copy  b Image1 jpg   Archive rar Image2 jpg             StandardOutput

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None of the above answers helped for some reason  it seems like they sweep errors under the rug and make troubleshooting one s command difficult   So I ended up going with something like this  maybe it will help someone else   var proc   new Process       StartInfo   new ProcessStartInfo               FileName     C  Program Files Microsoft Visual Studio 14 0 Common7 IDE tf exe           Arguments    checkout AndroidManifest xml           UseShellExecute   false          RedirectStandardOutput   true          CreateNoWindow   true          WorkingDirectory     C  MyAndroidApp             proc Start

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Here is little simple and less code version  It will hide the console window too-  System Diagnostics Process process   new System Diagnostics Process    process StartInfo WindowStyle   System Diagnostics ProcessWindowStyle Hidden  process StartInfo FileName    cmd exe   process StartInfo Arguments     C copy  b Image1 jpg   Archive rar Image2 jpg   process Start

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Yes  there is  see link in Matt Hamilton s comment   but it would be easier and better to use  NET s IO classes  You can use File ReadAllBytes to read the files and then File WriteAllBytes to write the  embedded  version

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This can also be done by P Invoking the C standard library s system function  using System Runtime InteropServices    DllImport  quot msvcrt dll quot    public static extern int system string format    system  quot copy Test txt Test2 txt quot     Output        1 file s  copied

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if you want to run the command in async mode - and print the results  you can you this class       public static class ExecuteCmd            lt summary gt          Executes a shell command synchronously           lt  summary gt           lt param name  command  gt string command lt  param gt           lt returns gt string  as output of the command  lt  returns gt      public static void ExecuteCommandSync object command                try                          create the ProcessStartInfo using  cmd  as the program to be run  and   c   as the parameters                 Incidentally   c tells cmd that we want it to execute the command that follows  and then exit              System Diagnostics ProcessStartInfo procStartInfo   new System Diagnostics ProcessStartInfo  cmd     c     command                  The following commands are needed to redirect the standard output                 This means that it will be redirected to the Process StandardOutput StreamReader              procStartInfo RedirectStandardOutput    true              procStartInfo UseShellExecute   false                 Do not create the black window              procStartInfo CreateNoWindow   true                 Now we create a process  assign its ProcessStartInfo and start it             System Diagnostics Process proc   new System Diagnostics Process                proc StartInfo   procStartInfo              proc Start                    Get the output into a string             string result   proc StandardOutput ReadToEnd                    Display the command output              Console WriteLine result                     catch  Exception objException                           Log the exception             Console WriteLine  ExecuteCommandSync failed    objException Message                             lt summary gt          Execute the command Asynchronously           lt  summary gt           lt param name  command  gt string command  lt  param gt      public static void ExecuteCommandAsync string command                try                         Asynchronously start the Thread to process the Execute command request              Thread objThread   new Thread new ParameterizedThreadStart ExecuteCommandSync                  Make the thread as background thread              objThread IsBackground   true                Set the Priority of the thread              objThread Priority   ThreadPriority AboveNormal                Start the thread              objThread Start command                     catch  ThreadStartException                            Log the exception                   catch  ThreadAbortException                            Log the exception                   catch  Exception                            Log the exception

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if you want to keep the cmd window open or want to use it in winform wpf then use it like this      string strCmdText    For Testing     strCmdText    K ipconfig     System Diagnostics Process Start  CMD exe  strCmdText         K   Will keep the cmd window open

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this is all you have to do run shell commands from C   string strCmdText  strCmdText    C copy  b Image1 jpg   Archive rar Image2 jpg   System Diagnostics Process Start  CMD exe  strCmdText     EDIT   This is to hide the cmd window   System Diagnostics Process process   new System Diagnostics Process    System Diagnostics ProcessStartInfo startInfo   new System Diagnostics ProcessStartInfo    startInfo WindowStyle   System Diagnostics ProcessWindowStyle Hidden  startInfo FileName    cmd exe   startInfo Arguments     C copy  b Image1 jpg   Archive rar Image2 jpg   process StartInfo   startInfo  process Start      EDIT  2  Important is that the argument begins with  C otherwise it won t work  How Scott Ferguson said  it  Carries out the command specified by the string and then terminates

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with a reference to Microsoft VisualBasic  Interaction Shell  copy  b Image1 jpg   Archive rar Image2 jpg   AppWinStyle Hide

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