RunPowershellCommand From ASPx Page

private void RunPowershellCommand(string loginName)

    {

        try

        {

            PSSnapInException exc = new PSSnapInException();

            RunspaceConfiguration rc = RunspaceConfiguration.Create();

            PSSnapInInfo info = rc.AddPSSnapIn("Microsoft.Sharepoint.Powershell", out exc);

            Runspace rs = RunspaceFactory.CreateRunspace(rc);

            rs.Open();

            Pipeline cmd = rs.CreatePipeline(string.Format("set-SPSite -Identity http://sitecollection -SecondaryOwnerAlias {0}",loginName));           

            Collection<PSObject> results = cmd.Invoke();

            foreach (PSObject str in results) 

                SendToTextFile(str.ToString()); 

        }

        catch (Exception ex)

        {

            SendToTextFile("RunPowershellCommand() Error: " + ex.ToString()); 

        }

    }