Restart Hyper V machine using powershell cmdlet from C#

Question

I'm trying to build an app to restart VMs in Hyper V in Server 2012 I had each VM in the list restarting but i want to adapt it to turn the machine off and then back on. The commented code is the working forced resart. Thanks in advance.

public async static void RestartAllVMs(List<VM> vmList, int timeDelay)
    {
        PowerShell ps = PowerShell.Create();
        foreach (VM vm in vmList)
        {
            /*//Create PowerShell object
            PowerShell ps = PowerShell.Create();
            ps.AddCommand("Restart-VM");
            ps.AddArgument(vm.vmName);
            ps.AddParameter("Force");
            ps.Invoke();
            await Task.Delay(timeDelay * 1000);*/

            //Create PowerShell object
            //I want to run from here down instead of just restarting the code doesn't work and no errors are thrown.
            ps.AddCommand("Stop-VM");
            ps.AddArgument(vm.vmName);
            ps.AddCommand("Start-Sleep");
            ps.AddParameter("s", 10);



            ps.AddCommand("Start-VM");
            ps.AddArgument(vm.vmName);
            ps.AddCommand("Start-Sleep");
            ps.AddParameter("m", 500);
            ps.Invoke();
            await Task.Delay(timeDelay * 1000);

        }

    }

That's still not a question. and if you have more info, please edit your question. Code in comments is unreadable. — DavidG
– DavidG, Commented Aug 8, 2016 at 23:51
from the Stop vm cmd, no errors are thrown, the resart cmd sequence in the commented code does work. however i want to use the sequence from the stop vm cmd — user5930979
– user5930979, Commented Aug 8, 2016 at 23:54
Doesn't the Stop-VM command need a -name argument? Something like Stop-VM -name SomeComputer? — DavidG
– DavidG, Commented Aug 9, 2016 at 0:10

Etaila · Accepted Answer · 2016-12-21 14:54:10Z

Just in case you still need an answer:

using (PowerShell shell = PowerShell.Create())

before you start

shell.AddScript("Invoke-Command -ComputerName "name of your target PC" -ScriptBlock {Stop-VM " + VM.getname() + "}");

Stopps the VM and waits for result

shell.AddScript("Invoke-Command -ComputerName "name of your target PC" -ScriptBlock {Start-VM " + VM.getname() + "}");

Starts the VM and waits for result

foreach (PSObject outputItem in shell.Invoke())
{
    string name = outputItem.Members["Name"].Value.ToString()
}

Runs through all Machines and returns in this case the Name of your machine into string name, but it can return every parameter of the engine. (in this case string will only have the name of the last machine because it gets constantly rewritten but it should be no problem to replace it with your containing object.)

shell.Streams.Error
shell.Streams.Warning

returning all problems from powershell.

Hope that helps.

PS: Make sure that you have an up to date powershell, since many systems have older ones, that don't support all the commands, Also maybe there is an restart command, but I don't know and since I can't test it where I am, you need to find that for yourself.

Collectives™ on Stack Overflow

Restart Hyper V machine using powershell cmdlet from C#

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related