Cant run ps1 script from out program files folder

Question

I can run this script perfectly from my desktop:

    private void Sleep_Click(object sender, EventArgs e)
    {
         PowerShell ps = PowerShell.Create();         


        

Answer 1

PetSerAl has, as usual, provided the crucial pointer in a comment on the question:

• Use .AddCommand() to add a command by name or executable / script-file path.

  • In you needed to pass arguments to that command, you would then have to use the .AddParameters() method - see example below.

• By contrast, use the (poorly named) .AddScript() method to add a self-contained piece of PowerShell source code as a string, which is parsed into a script block (a better name for the method would therefore have been .AddScriptBlock()).

  • In you needed to pass arguments, you would have to embed them directly in the source-code string - see example at the bottom.

Therefore, simply using .AddCommand() in lieu of .AddScript() is the solution:

ps.AddCommand(@"C:\Program Files (x86)\Home Control\scripts\alllightsoff.ps1");

If you wanted to pass an argument, say -Delay 60, you'd then call:

ps.AddParameters(new Dictionary<string, int> { ["Delay"] = 60 });

---

Why .AddScript() didn't work:

Since you're passing a piece of PowerShell source code, the usual evaluation rules apply:

A file path with embedded spaces such as
C:\Program Files (x86)\Home Control\alllightsoff.ps1 needs quoting for the PowerShell parser to recognize it as a single argument.

However, once quoted, you must use &, the call operator, for PowerShell to know that the quoted path represents a command (script file) to invoke (otherwise, it would treat it as a string).

Hence, if you want to use .AddScript() in your case, you must use:

ps.AddScript(@"& 'C:\Program Files (x86)\Home Control\scripts\alllightsoff.ps1'");

Note the leading &  and the '...' around the file path.

If you wanted to pass an argument, say -Delay 60, you'd have to include it in the string:

ps.AddScript(
  @"& 'C:\Program Files (x86)\Home Control\scripts\alllightsoff.ps1' -Delay 60"
);