How do I remove treeviewitem using MVVM pattern? [C# WPF]

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C#

.NET

XAML

WPF

MVVM

I'm making a file explorer app using MVVM pattern in C# WPF. Right now I want to implement watcher events that are responsible for adding, removing and renaming items from treeview. I already have adding, and partially renaming (I think that in this case I have to combine deleting and adding). I'm struggling with deletion.

What I have tried:

I get an error from watcher_error saying

system.componentmodel.win32exception (0x80004005) Access Denied

Deleted files are still in the treeview. I would very much appreciate any kind of help. Here's a code I've written

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Forms;

namespace ViewModels
{
    public class DirectoryInfoViewModel : FileSystemInfoViewModel
    {
        public ObservableCollection<FileSystemInfoViewModel> Items { get; private set; }
 = new ObservableCollection<FileSystemInfoViewModel>();

        public bool Open(string path)
        {
            bool result = false;
            FileSystemWatcher Watcher = new FileSystemWatcher();
            try
            {
                Watcher = new FileSystemWatcher(path);
                Watcher.Created += OnFileCreated;
                Watcher.Renamed += OnFileRenamed;
                Watcher.Deleted += OnFileDeleted;
                //Watcher.Changed += OnFileChanged;
                Watcher.Error += Watcher_Error;
                Watcher.EnableRaisingEvents = true;

                foreach (var dirName in Directory.GetDirectories(path))
                {
                    var dirInfo = new DirectoryInfo(dirName);
                    DirectoryInfoViewModel itemViewModel = new DirectoryInfoViewModel
                    {
                        Model = dirInfo
                    };
                    itemViewModel.Open(dirName);
                    Items.Add(itemViewModel);
                }


                foreach (var fileName in Directory.GetFiles(path))
                {
                    var fileInfo = new FileInfo(fileName);
                    FileInfoViewModel itemViewModel = new FileInfoViewModel();
                    itemViewModel.Model = fileInfo;
                    Items.Add(itemViewModel);
                }
                result = true;
            }
            catch (Exception ex)
            {
                Exception = ex;
            }
            return result;
        }

        public Exception Exception { get; private set; }

  


        private static void Watcher_Error(object sender, ErrorEventArgs e) =>
            System.Windows.MessageBox.Show(e.GetException().ToString());


        public void OnFileCreated(object sender, FileSystemEventArgs e)
        {
            System.Windows.Application.Current.Dispatcher.Invoke(() => OnFileCreated(e));
        }

        private void OnFileCreated(FileSystemEventArgs e)
        {
            Debug.WriteLine("File Created: " + e.Name);
            if (!Items.Any(x => x.Caption == e.Name))
            {
                var dirInfo = new DirectoryInfo(e.FullPath);
                DirectoryInfoViewModel itemViewModel = new DirectoryInfoViewModel();
                itemViewModel.Model = dirInfo;
                Items.Add(itemViewModel);
            }
        }


        public void OnFileDeleted(object sender, FileSystemEventArgs e)
        {
            System.Windows.Application.Current.Dispatcher.Invoke(() => OnFileDeleted(e));
        }

        

        private void OnFileDeleted(FileSystemEventArgs e)
        {
            
                Debug.WriteLine("File Deleted: " + e.Name);
            if (Items.Any(x => x.Caption == e.Name))
            {
                var dirInfo = new DirectoryInfo(e.FullPath);
                Debug.WriteLine("File path: " + e.FullPath);
                DirectoryInfoViewModel itemViewModel = new DirectoryInfoViewModel();

                itemViewModel.Model = dirInfo;
                Items.Remove(itemViewModel);
              
            }


        }

        public void OnFileRenamed(object sender, FileSystemEventArgs e)
        {
            System.Windows.Application.Current.Dispatcher.Invoke(() => OnFileRenamed(e));
        }

        private void OnFileRenamed(FileSystemEventArgs e)
        {

            Debug.WriteLine("File Renamed: " + e.Name);

            OnFileDeleted(e);
            OnFileCreated(e);
     
        }
    }
}

I've also tried rearranging watcher initializon a little bit, but it didn't help:

bool result = false;
           try
           {
              FileSystemWatcher Watcher = new FileSystemWatcher(path);
               Watcher.Created += OnFileCreated;
               Watcher.Renamed += OnFileRenamed;
               Watcher.Deleted += OnFileDeleted;
               //Watcher.Changed += OnFileChanged;
               Watcher.Error += Watcher_Error;
               Watcher.EnableRaisingEvents = true;