How to pass parameters to a powershell script executed from C#?

Question

I have the following Powershell script :

   param(
    [string] $Source ,
    [string] $Target ,
    [string] $UserId  
)
Set-Location "C:\My folder"
& "C:\Program Files\nodejs\node.exe" "index.js" $Source $Target $UserId

I need to execute it from a C# application, so I have this code:

var process = new Process();
string parameters = string.Format(" -Source {0} -Target {1} -UserId {2} ", Source, Target, UserName);
process.StartInfo.FileName = @"C:\windows\system32\windowspowershell\v1.0\powershell.exe";
process.StartInfo.Arguments = "\"&'" + ScriptName + "'\" ";
process.Start();
string s = process.StandardOutput.ReadToEnd();
process.WaitForExit();

This works in invoke my script, but I don't know how to pass the parameters that I have in the variables.

I already tried using Runspace runspace = RunspaceFactory.CreateRunspace(); but this way doesn't execute my script.

Did you find this during your searching for a solution: stackoverflow.com/questions/10260597/… — Flydog57
– Flydog57, Commented Jun 9, 2021 at 22:12
Yes, I tried that exactly piece of code, and did'nt work. just do not execute my script file. Like nothing happens... — Liz Bundy
– Liz Bundy, Commented Jun 9, 2021 at 22:14
If I type this at the CMD command line: C:\windows\system32\windowspowershell\v1.0\powershell.exe -command "get-date -year 2010" then Powershell starts up and runs get-date -year 2010. Try something like that. I.E., set the arguments to -command "get-date -year 2010" (substituting your script and your script arguments) — Flydog57
– Flydog57, Commented Jun 9, 2021 at 22:33
Where do you declare ScriptName? Also, the argument line is unclear... Check out this article on how to call the exe:learn.microsoft.com/en-us/powershell/module/… — alexzelaya
– alexzelaya, Commented Jun 9, 2021 at 22:35
Oh, sure. I declared that variable a little before that piece of code. Like this: string ScriptName = "c:\\code\\MyFolder\\data\\script\\StepOne.ps1"; and, I need the C# code to pass the parameters, not the powershell script, because I already have that. — Liz Bundy
– Liz Bundy, Commented Jun 9, 2021 at 22:39

mklement0 · Accepted Answer · 2021-06-09 22:56:48Z

0

Assuming that you can use C# v6+ interpolated strings, and assuming that the arguments you're trying to pass to script ScriptName are stored in variables Source, Target, and UserId:

process.StartInfo.Arguments = $"-File \"{ScriptName}\" \"{Source}\" \"{Target}\" \"{UserId}\"";

answered Jun 9, 2021 at 22:56

mklement0

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