How do I pass command-line arguments to a WinForms application

Question

I have two different WinForms applications  AppA  amp  AppB  Both are running  NET 2 0   In AppA I want to open AppB  but I need to pass command-line arguments to it  How do I consume the arguments that I pass in the command line   This is my current main method in AppB  but I don t think you can change this     static void main

User · Accepted Answer

static void Main string   args         For the sake of this example  we re just printing the arguments to the console    for  int i   0  i  lt  args Length  i          Console WriteLine  args  0       1    i  args i            The arguments will then be stored in the args string array     AppB exe firstArg secondArg thirdArg args 0     firstArg args 1     secondArg args 2     thirdArg

User · Answer

This may not be a popular solution for everyone  but I like the Application Framework in Visual Basic  even when using C    Add a reference to Microsoft VisualBasic  Create a class called WindowsFormsApplication  public class WindowsFormsApplication   WindowsFormsApplicationBase             lt summary gt          Runs the specified mainForm in this application context           lt  summary gt           lt param name  mainForm  gt Form that is run  lt  param gt      public virtual void Run Form mainForm                   set up the main form          this MainForm   mainForm              Example code           Form1 mainForm  FileName   this CommandLineArgs 0               then  run the the main form          this Run this CommandLineArgs                   lt summary gt          Runs this MainForm in this application context  Converts the command         line arguments correctly for the base this Run method           lt  summary gt           lt param name  commandLineArgs  gt Command line collection  lt  param gt      private void Run ReadOnlyCollection lt string gt  commandLineArgs                   convert the Collection lt string gt  to string    so that it can be used            in the Run method          ArrayList list   new ArrayList commandLineArgs           string   commandLine    string   list ToArray typeof string            this Run commandLine              Modify your Main   routine to look like this  static class Program         STAThread      static void Main                 Application EnableVisualStyles            Application SetCompatibleTextRenderingDefault false            var application   new WindowsFormsApplication            application Run new Form1               This method offers some additional usefull features  like SplashScreen support and some usefull events   public event NetworkAvailableEventHandler NetworkAvailabilityChanged d  public event ShutdownEventHandler Shutdown  public event StartupEventHandler Startup  public event StartupNextInstanceEventHandler StartupNextInstance  public event UnhandledExceptionEventHandler UnhandledException

User · Answer

You can grab the command line of any  Net application by accessing the Environment CommandLine property   It will have the command line as a single string but parsing out the data you are looking for shouldn t be terribly difficult     Having an empty Main method will not affect this property or the ability of another program to add a command line parameter

User · Answer

The best way to work with args for your winforms app is to use   string   args   Environment GetCommandLineArgs      You can probably couple this with the use of an enum to solidify the use of the array througout your code base       And you can use this anywhere in your application  you aren   t just   restricted to using it in the main   method like in a console   application     Found at HERE

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Consider you need to develop a program through which you need to pass two arguments  First of all  you need to open Program cs class and add arguments in the Main method as like below and pass these arguments to the constructor of the Windows form   static class Program           STAThread     static void Main string   args                          Application EnableVisualStyles           Application SetCompatibleTextRenderingDefault false          Application Run new Form1 args 0   Convert ToInt32 args 1                          In windows form class  add a parameterized constructor which accepts the input values from Program class as like below   public Form1 string s  int i        if  s    null  amp  amp  i  gt  0         MessageBox Show s         i       To test this  you can open command prompt and go to the location where this exe is placed  Give the file name then  parmeter1  parameter2  For example  see below  C  MyApplication gt Yourexename p10 5   From the C  code above  it will prompt a Messagebox with value p10 5

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You use this signature   in c   static void Main string   args   This article may help to explain the role of the main function in programming as well  http   en wikipedia org wiki Main function  programming   Here is a little example for you   class Program       static void Main string   args                bool doSomething   false           if  args Length  gt  0  amp  amp  args 0  Equals  doSomething                doSomething   true           if  doSomething  Console WriteLine  Commandline parameter called

[c#] How do I pass command-line arguments to a WinForms application?

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