Could you please help me out to fetch the the list of projects that belong to domain in ALM?

See more:

C#

VB

VBA

ALM

HPE

The following is the piece of code i have tried to list down the projects for a domain in ALM and i am getting the following error message

Indexed property 'ITDConnection11.VisibleProjects' has non-optional arguments which must be provided

The error message is shown on this line of code

List proj = qctd.VisibleProjects;

I am struck now and not sure how to progress on this.. Could you please help me on this?

What I have tried:

using System;
using System.Windows.Forms;
using MetroFramework.Forms;
using MetroFramework;
using TDAPIOLELib;

namespace ALM___Utilities
{
    public partial class Form1 : MetroForm
    {
        public Form1()
        {
            InitializeComponent();

        }

        private void ALM_url_TextChanged(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(ALM_url.Text) & string.IsNullOrEmpty(Username.Text) & string.IsNullOrEmpty(Password.Text))

                loginbutton.Enabled = true;
            else
                loginbutton.Enabled = false;

        }

        private void loginbutton_Click(object sender, EventArgs e)
        {
            string username = Username.Text;
            string password = Password.Text;
            string URL = ALM_url.Text;
            TDConnection qctd = new TDConnection();
            qctd.InitConnectionEx(URL);
            try
            {
                qctd.Login(username, password);
                if (qctd.Connected)
                {
                    MetroMessageBox.Show(this, "Logged in Successfully", "Login Status", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                List domainlist = qctd.VisibleDomains;
                List proj = qctd.VisibleProjects;
                foreach (string desc in domainlist)
                {
                    
                       
                   foreach ( var projname in proj)
                    { 
                        MetroMessageBox.Show(this, desc.ToString(), "domain", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        //MetroMessageBox.Show(this, projname.ToString(), "domain", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                    
                    {
                        
                    }
                        
                        //MetroMessageBox.Show(this, Project.ToString(), "prj", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                


            }
            catch (Exception ex)
            {
                MetroMessageBox.Show(this, ex.Message, "Login Status", MessageBoxButtons.OK, MessageBoxIcon.Error);

            }

        }
    }
}