Unable to fetch the cycles with-in the release for HP ALM using C# code

See more:

C#

VBA

API

ALM

HPE

The Objective of this code is fetch the Cycle name when user select the specific Releases in Release Combobox.

The code is fetching all the Cycles for a Project in HP ALM rather than on selecting the Release it should fetch the cycle specific to release.

I have tried the below code . Could you please help me fetch the cycle specific to Release selected in HP ALM?

What I have tried:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using MetroFramework.Forms;
using MetroFramework;
using TDAPIOLELib;

namespace ALM___Utilities
{
    public partial class Main : MetroForm
    {
        public BugFactory BugF;
        public TDFilter BugFFilter;
        public List BugL;
        public Release rl;
        public Cycle Cyc;
        public CycleFactory CyF;
        public ReleaseFactory rel;
        public List listRel;
        public List listcycle;

        public Main(ITDConnection2 qctd)
        {
            InitializeComponent();
        }

        //private void Export_Defects_Button_Click(object sender, EventArgs e)
        //{
        // BugF = LoginForm.qctd.BugFactory;

        // BugL = (List)BugF.NewList(BugF.Filter.Text);
        //foreach (Bug thisBug in BugL)
        //{

        // string x = thisBug["BG_DETECTED_IN_REL"].Value;
        // }

        private void Main_Load(object sender, EventArgs e)
        {
            Export_Defects_Button.Enabled = false;
            rel = LoginForm.qctd.ReleaseFactory;
            listRel = (List)rel.NewList(rel.Filter.Text);
            Release.Items.Clear();
            foreach (Release rl in listRel)
            {
                Release.Items.Add(rl.Name);
            }
            // CyF = LoginForm.qctd.CycleFactory;
        }

        private void Release_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                string releasename = Release.Text;
                listRel = (List)rel.NewList(rel.Filter.Text);
                foreach (Release rl in listRel)
                {
                    CyF = rl.CycleFactory;
                    listcycle = (List)CyF.NewList("");
                    Defect_Cycle.Items.Clear();
                    foreach (TDAPIOLELib.Cycle Cyc in listcycle)
                    {
                        Defect_Cycle.Items.Add(Cyc.Name);
                    }
                }
                Export_Defects_Button.Enabled = true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}