executing ps1 with parameters using C#

Question

I'm trying to build a web form that asks for parameters, then when submit is clicked, it runs a PowerShell script with the parameters provided. I'm getting stumped on calling the ps1 file. I am using Visual Studio and whenever I try to run the project in a browser, the ps1 file is never ran and I can't seem to find any errors anywhere.

Here is my C# code;

namespace MDTDatabase
{
    using System;
    using System.Management.Automation;
    using System.Management.Automation.Runspaces;

    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void ExecuteInputClick(object sender, EventArgs e)
        {
            AddResult.Text = string.Empty;

            using (var shell = PowerShell.Create(InitialSessionState.CreateDefault2()))
            {
                Command commandfile = new Command("C:\\Scripts\\New-MDTComputer.ps1");

                PSCommand pSCommand = shell.Commands.AddCommand(commandfile);
                shell.Commands.AddParameter("serialnumber", SerialNumber.Text);
                shell.Commands.AddParameter("purchasedate", PurchaseDate.Text);
                shell.Commands.AddParameter("assetnumber", AssetNumber.Text);
                shell.Commands.AddParameter("computerdescription", ComputerDescription.Text);

                try
                {
                    var Addresult = shell.Invoke();
                }
                catch (ActionPreferenceStopException Error) { AddResult.Text = Error.Message; }
                catch (RuntimeException Error) { AddResult.Text = Error.Message; }
            }
;
        }
    }

 }

Right now my ps1 file only has "Write-Host hello" in it so I can easily verify that the script is running. Needless to say I get nothing in return.

I used this guide in creating the form so far. https://www.itdroplets.com/create-a-powershell-web-application/

I'm sure I'm doing something wrong with calling the ps1 , but can't seem to find the right search terms for Google or stackoverflow. Can someone help point me in the right direction?

Answer 1

I suggest much simplier syntax. Here's test script that I used:

Param($param);
set-content 'C:\users\user\Desktop\testFile.txt' $param;

and I invoke it in C# like:

System.Diagnostics.Process.Start("powershell.exe", @". 'C:\users\user\desktop\tst.ps1' -param 'some content'")

UPDATE:

Having the same PowerShell script as above, I managed to get it working with your code, ie:

using (var shell = PowerShell.Create(InitialSessionState.CreateDefault2()))
{
    Command commandfile = new Command("C:\\users\\user\\desktop\\test.ps1");

    PSCommand pSCommand = shell.Commands.AddCommand(commandfile);
    shell.Commands.AddParameter("param", "some text");

    try
    {
        var Addresult = shell.Invoke();
    }
    catch(Exception ex)
    {

    }
 }

So, I guess, problem lies in your PowerShell script (my guess is lack of Param($param1, $param2, ...) statement).