This code will return the list of installed program names and the install path if it exists.

WMI_GetDependentObjects.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Management;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TestCSharpApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            MainMethod();
        }
        public delegate void DelegateCallback(string s);
        private void MainMethod()
        {
            Task t = new Task(GetDependentObjects, TaskCreationOptions.LongRunning);
            Thread tt = new Thread(GetDependentObjects, 0);
            tt.Start();
        }
        private void GetDependentObjects()
        {
            ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Product");
            foreach (ManagementObject queryObj in searcher.Get())
            {
                if (queryObj["Name"] != null && queryObj["InstallLocation"] != null)
                {
                    listBox1.Invoke(new DelegateCallback(UpdateUI), new string[] { string.Concat((string)queryObj["Name"], ", ", (string)queryObj["InstallDate"], ", ", (string)queryObj["InstallLocation"]) });
                }
            }
        }
        private void UpdateUI(string item)
        {
            listBox1.Items.Add(item);
        }
    }
}