How to execute PowerShell script or cmdlets from C# code?

Program.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Management.Automation;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace PowerShellScriptExecutor
{
    class Program
    {
        static void Main(string[] args)
        {
            using (PowerShell PowerShellInst = PowerShell.Create())
            {
                string criteria = "system*";
                PowerShellInst.AddScript("Get-Service -DisplayName " + criteria);
                Collection<PSObject> PSOutput = PowerShellInst.Invoke();
                foreach (PSObject obj in PSOutput)
                {
                    if (obj != null)
                    {
                        Console.Write(obj.Properties["Status"].Value.ToString() + " - ");
                        Console.WriteLine(obj.Properties["DisplayName"].Value.ToString());
                    }
                }
                Console.WriteLine("Done");
                Console.Read();
            }           
        }
    }
}

Program1.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Management.Automation;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace PowerShellScriptExecutor
{
    class Program
    {
        static void Main(string[] args)
        {
            //Execute PS1(PowerShell script) file
            using (PowerShell PowerShellInst = PowerShell.Create())
            {
                string path = System.IO.Path.GetDirectoryName(@"C:\Temp\") + "\\Get-EventLog.ps1";
                if (!string.IsNullOrEmpty(path))
                    PowerShellInst.AddScript(System.IO.File.ReadAllText(path));

                Collection<PSObject> PSOutput = PowerShellInst.Invoke();
                foreach (PSObject obj in PSOutput)
                {
                    if (obj != null)
                    {
                        Console.Write(obj.Properties["EntryType"].Value.ToString() + " - ");
                        Console.Write(obj.Properties["Source"].Value.ToString() + " - ");
                        Console.WriteLine(obj.Properties["Message"].Value.ToString() + " - ");
                    }
                }
                Console.WriteLine("Done");
                Console.Read();
            }
        }
    }
}

Program2.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Management.Automation;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace PowerShellScriptExecutor
{
    class Program
    {
        static void Main(string[] args)
        {
            //execute powershell cmdlets or scripts using command arguments as process
            ProcessStartInfo processInfo = new ProcessStartInfo();
            processInfo.FileName = @"powershell.exe";
            //execute powershell script using script file
            //processInfo.Arguments = @"& {c:\temp\Get-EventLog.ps1}";
            //execute powershell command
            processInfo.Arguments = @"& {Get-EventLog -LogName Application -Newest 10 -EntryType Information | Select EntryType, Message}";
            processInfo.RedirectStandardError = true;
            processInfo.RedirectStandardOutput = true;
            processInfo.UseShellExecute = false;
            processInfo.CreateNoWindow = true;

            //start powershell process using process start info
            Process process = new Process();
            process.StartInfo = processInfo;
            process.Start();

            Console.WriteLine("Output - {0}", process.StandardOutput.ReadToEnd());
            Console.WriteLine("Errors - {0}", process.StandardError.ReadToEnd());
            Console.Read();
        }
    }
}

thank you, you beautiful indian man

Hi, I used every method described above, it works fine on my local machine but when I create task scheduler on production server PowerShell script does not get executed.

Any help would be appreciated.

Thanks
Rupinder

Hi, i am having the same issue. i am invoking powershell script on a button click. its working fine on my local machine. but when the code is deployed to Dev environment, its not working. is this an issue with IIS User vs local user? please help.

Thanks in advance,
Pramod.

Same issue here, anyone can help with this? It works fine on dev machine, but it will not execute the PS after deploying to the Windows server.

Same issue here, anyone can help with this? It works fine on dev machine, but it will not execute the PS after deploying to the Windows server.

I resolved this issue.
Set those properties:

RedirectStandardError = true; error = process.StandardError.ReadToEnd();

write the error to a .txt file, it is the important info for troubleshooting.

The error for me is logon server failed due to missing the domain before the username. Hope it helps

Tried the above steps to log the error.
However error = process.StandardError.ReadToEnd(); gives no information.Any clues here will be helpful.