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

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
{

    /// <summary>
    /// Runs the specified mainForm in this application context.
    /// </summary>
    /// <param name="mainForm">Form that is run.</param>
    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);
    }

    /// <summary>
    /// Runs this.MainForm in this application context. Converts the command
    /// line arguments correctly for the base this.Run method.
    /// </summary>
    /// <param name="commandLineArgs">Command line collection.</param>
    private void Run(ReadOnlyCollection<string> commandLineArgs)
    {
        // convert the Collection<string> 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;

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