private Runspace runspace;

        private void RunSharedMailboxScript()
        {
            string organizationalUnit = GetOrganizationalUnitName(sharedMailboxOrganizationalUnitCombobox.SelectedIndex);
            string mailboxUPN = "$mailbox_alias@afconsult.com";

            string newMailBoxScript = $@"New-Mailbox -Name {sharedMailboxNameTextbox.Text} -Alias {sharedMailboxAliasTextbox.Text} -OrganizationalUnit {organizationalUnit} -UserPrincipalName {mailboxUPN} -Shared";
            string addADGroupMemberScript = $@"Add-ADGroupMember 'Office 365 Users' -Members {sharedMailboxAliasTextbox.Text}";
            string setADUserScript = $@"Set-ADUser $mailbox_alias -Description '{sharedMailboxIncidentNumberTextbox.Text} - {DateTime.Now.ToString()}'";

            RunConnectToExchangeScript();

            RunScript(newMailBoxScript);
            RunScript(addADGroupMemberScript);
            RunScript(setADUserScript);

            CloseExchangeScript();
        }

        private void RunConnectToExchangeScript()
        {
            string exchangeHostname = "http://afsesthex10.af.se/powershell/";
            // Get credentials
            string userName = connectToExchangeUsernameBox.Text;
            SecureString password = connectToExchangePasswordbox.SecurePassword;
            PSCredential Credential = new PSCredential(userName, password);

            // Set the connection info
            WSManConnectionInfo connectionInfo = new WSManConnectionInfo(new Uri(exchangeHostname), "http://schemas.microsoft.com/powershell/Microsoft.Exchange", Credential);
            {
                connectionInfo.AuthenticationMechanism = AuthenticationMechanism.Kerberos;
            }

            runspace = RunspaceFactory.CreateRunspace();
            PowerShell powershell = PowerShell.Create();
            PSCommand command = new PSCommand();
            command.AddCommand("New-PSSession");
            command.AddParameter("ConfigurationName", "Microsoft.Exchange");
            command.AddParameter("ConnectionUri", exchangeHostname);
            command.AddParameter("Credential", Credential);
            command.AddParameter("Authentication", "Kerberos");

            // -AllowRedirection
            powershell.Commands = command;

            // Open the runspace
            runspace.Open();

            // Associate the runspace with powershell
            powershell.Runspace = runspace;

            // Invoke the powershell to obtain results
            Collection<PSSession> result = powershell.Invoke<PSSession>();
            foreach (ErrorRecord current in powershell.Streams.Error)
                Console.WriteLine(String.Format($"The following Error happen when opening the remote Runspace: {0} | InnerException: {1}", current.Exception, current.Exception.InnerException));
            Console.ReadLine();
            if (result.Count != 1)
                throw new Exception("Unexpected number of runspace connections returned.");

        }

        private void CloseExchangeScript()
        {
            runspace.Close();
        }

        private void RunScript(string script)
        {
            Pipeline pipeline = runspace.CreatePipeline();
            pipeline.Commands.AddScript(script);
            pipeline.Invoke();
        }