How to run PowerShell with admin right

Question

Hi, I need to run PowerShell with admin rights to get permission to run a script in C# code. If there is a solution please leave a comment, many thanks.

Answer 1

Here's a possible solution to run PowerShell with admin rights in C# code:

1. Open Visual Studio and create a new C# console application.
2. Add a reference to the System.Management.Automation.dll assembly.
3. Use the following code to launch PowerShell as an administrator:

using System;
using System.Management.Automation;
using System.Security.Principal;

namespace RunPowerShellAsAdmin
{
    class Program
    {
        static void Main(string[] args)
        {
            // Check if the current user is an administrator
            WindowsIdentity identity = WindowsIdentity.GetCurrent();
            WindowsPrincipal principal = new WindowsPrincipal(identity);
            bool isAdmin = principal.IsInRole(WindowsBuiltInRole.Administrator);

            if (!isAdmin)
            {
                // Relaunch the program as an administrator
                string[] arguments = Environment.GetCommandLineArgs();
                string argumentsLine = string.Join(" ", arguments, 1, arguments.Length - 1);
                string executablePath = System.Reflection.Assembly.GetExecutingAssembly().Location;
                ProcessStartInfo psi = new ProcessStartInfo(executablePath, argumentsLine);
                psi.Verb = "runas";
                Process.Start(psi);
                return;
            }

            // Run PowerShell script as administrator
            using (PowerShell ps = PowerShell.Create())
            {
                ps.AddScript(@"Start-Process powershell.exe -Verb RunAs -ArgumentList '-File C:\path\to\script.ps1'");
                ps.Invoke();
            }

            Console.WriteLine("Press any key to exit...");
            Console.ReadKey();
        }
    }
}

This code first checks if the current user is an administrator. If not, it relaunches the program with administrator privileges. Then it launches PowerShell as an administrator and runs the specified script.

Make sure to replace C:\path\to\script.ps1 with the actual path to your PowerShell script. Also, note that running code as an administrator can be risky and should be used with caution.

Answer 2

@365 timviec, Welcome to Microsoft Q&A, for clickonce app, you could not run ClickOnce application with Administrative privileges. You could refer to the question to know more about it.

However, if you just want to run powershell command as admin, you could try to use the similar following command in your c# code:

Start-Process -FilePath "powershell" -Verb RunAs

The above command is used to start another PowerShell process as administrator.

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