How to catch a Powershell terminating exception in C#?-CodePudding

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.

CodePudding user response：

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.