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Why the PowerShell class does not load snapin

I have this code into which I load snapin (from MS Dynamics NAV in this case):

            using (Runspace runspace = RunspaceFactory.CreateRunspace())
        {
            runspace.Open();

            using (var ps = PowerShell.Create())
            {
                ps.Runspace = runspace;

                ps.AddScript("Add-PSSnapin Microsoft.Dynamics.Nav.Management")
                  .AddScript("Get-NAVServerInstance");

                //This does not work. Says unknown cmdlet Get-NAVServerInstance
                //ps.AddCommand("Add-PSSnapin").AddArgument("Microsoft.Dynamics.Nav.Management")
                //  .AddCommand("Get-NAVServerInstance");

                var output = ps.Invoke();
            }
        }

This code works when I use the AddScript method, as shown in the code. But why does the AddCommand method not work (see Comment)? It seems that snapin is not loaded, because the error indicates that the Get-NAVServerInstance cmdlet is unknown. How should this work?

I know that I can create a working environment with InitialSessionState, on which I imported snapin. Then ps.AddCommand ("Get-NAVServerInstance") works. But when I want to create a remote working session (using WSManConnectionInfo), I cannot find a way to create an initialSessionState.

UPDATE: , , AddCommand , ( ) . InitialSessionState RunspaceConfiguration RunspaceFactory.CreateRunspace(...). , :

    var config = RunspaceConfiguration.Create();
    PSSnapInException warning;
    config.AddPSSnapIn("Microsoft.Dynamics.Nav.Management", out warning);

    using (Runspace runspace = RunspaceFactory.CreateRunspace(config))
    {
        runspace.Open();

        using (var ps = PowerShell.Create())
        {
            ps.Runspace = runspace;
            ps.AddCommand("Get-NAVServerInstance");
            var output = ps.Invoke();
        }
    }

, WSManConnectionInfo.

, snapin ( )? ?

+1
2

- , (. https://superuser.com/a/518567).

Register-PSSessionConfiguration -Name MyShell -StartupScript 'MyInitScript.ps1'

shellUri WSManConnectionInfo http://schemas.microsoft.com/powershell/MyShell

, , , MyInitScript.ps1 script.

, :

        string shell = "http://schemas.microsoft.com/powershell/MyShell";
        var target = new Uri("https://myserver:port/wsman");
        var secured = new SecureString();
        foreach (char letter in "password")
        {
            secured.AppendChar(letter);
        }
        secured.MakeReadOnly();

        var credential = new PSCredential("username", secured);
        var connectionInfo = new WSManConnectionInfo(target, shell, credential);

        using (Runspace runspace = RunspaceFactory.CreateRunspace(connectionInfo))
        {
            runspace.Open();

            using (var ps = PowerShell.Create())
            {
                ps.Runspace = runspace;
                ps.AddCommand("Get-NAVServerInstance");
                var output = ps.Invoke();
            }
        }
+3

AddScript :

.AddScript("...", false)

.

, - RunspaceConfiguration. AddPSSnapin.

0

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