How to show subtitle on video like adobe premiere in VB.NET and C#?

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Threading;

namespace SubtitleSyncApp
{
    public partial class MainWindow : Window
    {
        private List<SubtitleRecord> subtitleList = new List<SubtitleRecord>();
        private DispatcherTimer subtitleTimer = new DispatcherTimer();
        private int currentIndex = 0;

        public MainWindow()
        {
            InitializeComponent();
            InitializeSubtitleList(); 
            //Populate your subtitleList with 1000 records as per the class below...

            videoPlayer.MediaOpened += VideoPlayer_MediaOpened;

            subtitleTimer.Interval = TimeSpan.FromMilliseconds(100); 
            //Adjust the interval as needed...
            subtitleTimer.Tick += SubtitleTimer_Tick;
        }

        private void VideoPlayer_MediaOpened(object sender, RoutedEventArgs e)
        {
            subtitleTimer.Start();
        }

        private void SubtitleTimer_Tick(object sender, EventArgs e)
        {
            double currentPosition = videoPlayer.Position.TotalSeconds;

            //Now find the index of the subtitle that matches your player's current position...
            while (currentIndex < subtitleList.Count - 1 && currentPosition > subtitleList[currentIndex + 1].StartTime)
            {
                currentIndex++;
            }

            //Update your subtitle text accordingly...
            subtitleTextBlock.Text = subtitleList[currentIndex].SubtitleText;
        }

        private void InitializeSubtitleList()
        {
            //Populate your subtitleList with 1000 records / replace this with your actual data...
            for (int i = 0; i < 1000; i++)
            {
                subtitleList.Add(new SubtitleRecord
                {
                    StartTime = i * 5, 
                    //This is as an example, adjust start times as needed or per yur list...
                    EndTime = (i + 1) * 5,
                    SubtitleText = $"Subtitle {i + 1}"
                });
            }
        }
    }

    public class SubtitleRecord
    {
        public double StartTime { get; set; }
        public double EndTime { get; set; }
        public string SubtitleText { get; set; }
    }
}