Start another EXE with command line parameters in C#

Question

I want do start an EXE file with Parameters.

I tried with Button1 to start a consoleapp (works). With Button2 i tried to open the same consoleapp with Parameters (works). With Button3 i tried to open the WindowsFromsApplication with Parameters. The WindowsFromsApplication does not run and casts a WindowsMessage, that it can't be opend (but not in the debugmode).

If I use same WindowsFromsApplication wit a desktop shortcut and parameters it works.

What is wrong my solution?

 public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        System.Diagnostics.Process.Start(Application.StartupPath + "\\ParamTest1.exe");
    }

    private void button2_Click(object sender, EventArgs e)
    {
        System.Diagnostics.Process.Start(Application.StartupPath + "\\ParamTest1.exe", "Test");
    }

    private void button3_Click(object sender, EventArgs e)
    {
        System.Diagnostics.Process.Start(Application.StartupPath + "\\Tool.exe","UserName Password");
    }

The Code of tool.exe:

static class Program
{
    /// <summary>
    /// Der Haupteinstiegspunkt für die Anwendung.
    /// </summary>
    [STAThread]
    static void Main(string[] args)
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new FormMain(args));
    }
}

And the FormMain:

public partial class FormMain: Form
{
    string Raptoruser = "";

    public FormMain(string[] args)
    {
        InitializeComponent();

...

Visual Studio copies the EXE as planned in the debug Folder.

Answer 1

You need to pass an arguments using ProcessStartInfo.Arguments property. And notice, that if your args contains the spaces you need to add quotes around your args, so, I suggest you need to correct your code smth like this:

Process.Start(new ProcessStartInfo(Application.StartupPath + "\\Tool.exe")
{
    Arguments = String.Format(@"""{0} {1}""", UserName, Password)
}
);

AND also make sure your Tool.exe is placed in the same location with the executable file of the solution.