How to catch a Powershell terminating exception in C#?

Question

How can I catch the Powershell exceptions AccessDeniedException and GroupExistsException within my C# program for the cmdlet New-LocalGroup

        try
        {
            PowerShell ps = PowerShell.Create();
            ps.AddCommand("New-LocalGroup");
            ps.AddParameter("Name", groupName);
            ps.AddParameter("Description", description);

            ps.Invoke();
        }
        catch (Exception ex)
        {
            if (ex is ?)

            throw ex;
        }

So far, I have this link from Microsoft documentation here.

mklement0 · Accepted Answer · 2021-11-03 02:20:34Z

2

What the New-LocalGroup cmdlet emits are non-terminating PowerShell errors (unless you use invalid syntax), which do not translate into .NET exceptions.

Instead, they are written to PowerShell's error output stream, which you can examine via ps.Streams.Error

See this answer for more information.

answered Nov 3, 2021 at 2:20

mklement0

453k68 gold badges729 silver badges989 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Abraham Zinala Over a year ago

I really wanna learn c# :(. How did you find out if the cmdlet was a non-terminating error? Is there a simple way?

mklement0 Over a year ago

@AbrahamZinala, generally speaking, most cmdlet errors are non-terminating. You can easily provoke a terminating one with a syntax error, by passing a non-existent parameter name. If you're unsure in a given situation, use the following trick (using a Get-Item call as an example): '!' + (Get-Item nosuch): If ! still prints, the error is non-terminating.

Collectives™ on Stack Overflow

How to catch a Powershell terminating exception in C#?

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related