Powershell 调用无效命令 output C#

Question

I have short C# code which fires an invalid command using powershell.

using (PowerShell PowerShellInst = PowerShell.Create())
{
    PowerShellInst.AddScript("abc");
    Collection<PSObject> PSOutput = PowerShellInst.Invoke();
    Console.WriteLine(PSOutput);
}

Output is not printing anything. when same command fire using actual powershell then following output is printed.

How can I get error output in C sharp code?

Answer 1

To get the errors, you can check if the powershell object HadError then look into Streams.Error property of the powershell object and for each ErrorRecord , you can get the Exception, StackTrace, ToString, etc:

using (var powerShell = PowerShell.Create())
{
    var output = powerShell.AddScript("abc").Invoke();
    if(powerShell.HadErrors)
    {
        foreach(var error in powerShell.Streams.Error)
        {
            Console.WriteLine(error.ToString());
        }
    }
}

Note: PowerShell provides multiple streams for different purposes: Debug, Error, Information, Progress, Verbose, Warning. You can get the streams using Streams property of your powershell instance.