FileWork examples were added

DataAccess/FileDialogs/FileDialogOpener.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace DataAccess.FileDialogs
+{
+    public class FileDialogOpener
+    {
+        public void OpenFileAndRead()
+        {
+            // Create an instance of OpenFileDialog
+            using (OpenFileDialog openFileDialog = new OpenFileDialog())
+            {
+                // Set filter options and filter index
+                openFileDialog.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*";
+                openFileDialog.FilterIndex = 1;
+                openFileDialog.Multiselect = false; // Set to true if you want to allow multiple file selection
+                openFileDialog.Title = "Select a File";
+
+                // Show the dialog and get result
+                if (openFileDialog.ShowDialog() == DialogResult.OK)
+                {
+                    // Get the path of the selected file
+                    string selectedFilePath = openFileDialog.FileName;
+
+                    // Read the content of the file
+                    try
+                    {
+                        string fileContent = File.ReadAllText(selectedFilePath);
+                        Console.WriteLine($"File Content of '{selectedFilePath}':");
+                        Console.WriteLine(fileContent);
+                    }
+                    catch (IOException ex)
+                    {
+                        Console.WriteLine($"An error occurred while reading the file: {ex.Message}");
+                    }
+                }
+                else
+                {
+                    Console.WriteLine("File selection was cancelled.");
+                }
+            }
+        }
+    }
+
+}

DataAccess/FileDialogs/FileRepository.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DataAccess.FileDialogs
+{
+    using System;
+    using System.IO;
+    using System.Threading.Tasks;
+
+    public class FileRepository : IFileRepository
+    {
+        private readonly string _storageDirectory;
+
+        public FileRepository(string storageDirectory)
+        {
+            _storageDirectory = storageDirectory;
+
+            // Ensure the storage directory exists
+            if (!Directory.Exists(_storageDirectory))
+            {
+                Directory.CreateDirectory(_storageDirectory);
+            }
+        }
+
+        // Save a file to the repository
+        public async Task SaveFileAsync(Stream fileStream, string fileName)
+        {
+            string filePath = Path.Combine(_storageDirectory, fileName);
+
+            // Ensure the file does not already exist
+            if (File.Exists(filePath))
+            {
+                throw new InvalidOperationException("File already exists.");
+            }
+
+            using (var file = new FileStream(filePath, FileMode.Create, FileAccess.Write))
+            {
+                await fileStream.CopyToAsync(file);
+            }
+        }
+
+        // Retrieve a file from the repository
+        public async Task<Stream> GetFileAsync(string fileName)
+        {
+            string filePath = Path.Combine(_storageDirectory, fileName);
+
+            // Ensure the file exists
+            if (!File.Exists(filePath))
+            {
+                throw new FileNotFoundException("File not found.");
+            }
+
+            var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+            return await Task.FromResult(fileStream);
+        }
+
+        // Update an existing file in the repository
+        public async Task UpdateFileAsync(Stream fileStream, string fileName)
+        {
+            string filePath = Path.Combine(_storageDirectory, fileName);
+
+            // Ensure the file exists
+            if (!File.Exists(filePath))
+            {
+                throw new FileNotFoundException("File not found.");
+            }
+
+            using (var file = new FileStream(filePath, FileMode.Truncate, FileAccess.Write))
+            {
+                await fileStream.CopyToAsync(file);
+            }
+        }
+
+        // Delete a file from the repository
+        public async Task DeleteFileAsync(string fileName)
+        {
+            string filePath = Path.Combine(_storageDirectory, fileName);
+
+            // Ensure the file exists
+            if (!File.Exists(filePath))
+            {
+                throw new FileNotFoundException("File not found.");
+            }
+
+            File.Delete(filePath);
+            await Task.CompletedTask;
+        }
+    }
+
+}

DataAccess/FileDialogs/FileStorage.cs

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+using DataAccess.FileDialogs;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace DataAccess.FileDialogs
+{
+    internal class FileStorage
+    {
+        using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Windows.Forms;
+
+public class FileStorageManager
+    {
+        // Dictionary to store files with unique IDs as keys
+        private readonly Dictionary<Guid, OpenedFile> _openedFiles = new Dictionary<Guid, OpenedFile>();
+
+        // Method to open a file and add it to the storage
+        public Guid OpenFile()
+        {
+            using (OpenFileDialog openFileDialog = new OpenFileDialog())
+            {
+                openFileDialog.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*";
+                openFileDialog.Multiselect = true; // Allow multiple file selection
+                openFileDialog.Title = "Select Files";
+
+                if (openFileDialog.ShowDialog() == DialogResult.OK)
+                {
+                    foreach (var filePath in openFileDialog.FileNames)
+                    {
+                        var fileId = Guid.NewGuid();
+                        var openedFile = new OpenedFile(fileId, filePath);
+
+                        // Add to storage
+                        _openedFiles[fileId] = openedFile;
+
+                        Console.WriteLine($"File '{openedFile.FilePath}' opened with ID: {fileId}");
+                    }
+                }
+            }
+
+            return Guid.Empty;
+        }
+
+        // Method to get an opened file by ID
+        public OpenedFile GetFile(Guid fileId)
+        {
+            if (_openedFiles.TryGetValue(fileId, out var openedFile))
+            {
+                return openedFile;
+            }
+
+            throw new KeyNotFoundException("File not found.");
+        }
+
+        // Method to close a file by ID
+        public void CloseFile(Guid fileId)
+        {
+            if (_openedFiles.ContainsKey(fileId))
+            {
+                _openedFiles.Remove(fileId);
+                Console.WriteLine($"File with ID: {fileId} has been closed.");
+            }
+            else
+            {
+                throw new KeyNotFoundException("File not found.");
+            }
+        }
+
+        // Method to read content of an opened file by ID
+        public string ReadFileContent(Guid fileId)
+        {
+            var openedFile = GetFile(fileId);
+            return File.ReadAllText(openedFile.FilePath);
+        }
+
+        // Method to list all opened files
+        public void ListOpenedFiles()
+        {
+            foreach (var file in _openedFiles.Values)
+            {
+                Console.WriteLine($"File ID: {file.Id}, Path: {file.FilePath}");
+            }
+        }
+    }
+
+    // Class representing an opened file
+    public class OpenedFile
+    {
+        public Guid Id { get; }
+        public string FilePath { get; }
+
+        public OpenedFile(Guid id, string filePath)
+        {
+            Id = id;
+            FilePath = filePath;
+        }
+    }
+
+}
+
+class Program
+{
+    [STAThread] // Required for OpenFileDialog
+    static void Main()
+    {
+        var fileStorageManager = new FileStorageManager();
+
+        // Open files and add them to the storage
+        fileStorageManager.OpenFile();
+
+        // List all opened files
+        Console.WriteLine("\nOpened Files:");
+        fileStorageManager.ListOpenedFiles();
+
+        // Example: Read content of the first opened file (if any)
+        var openedFiles = new List<Guid>(fileStorageManager._openedFiles.Keys);
+        if (openedFiles.Count > 0)
+        {
+            var firstFileId = openedFiles[0];
+            Console.WriteLine($"\nReading content of the first opened file (ID: {firstFileId}):");
+            string content = fileStorageManager.ReadFileContent(firstFileId);
+            Console.WriteLine(content);
+        }
+
+        // Close all files
+        foreach (var fileId in openedFiles)
+        {
+            fileStorageManager.CloseFile(fileId);
+        }
+    }
+}
+
+}

DataAccess/FileDialogs/IFileRepository.cs

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+using System.IO;
+using System.Threading.Tasks;
+
+namespace DataAccess.FileDialogs
+{
+    public interface IFileRepository
+    {
+        Task SaveFileAsync(Stream fileStream, string fileName);
+        Task<Stream> GetFileAsync(string fileName);
+        Task DeleteFileAsync(string fileName);
+        Task UpdateFileAsync(Stream fileStream, string fileName);
+    }
+
+}

DataAccess/FileDialogs/ProgramExample.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DataAccess.FileDialogs
+{
+    using System;
+    using System.IO;
+    using System.Text;
+    using System.Threading.Tasks;
+
+    class ProgramExample
+    {
+        static async Task Main(string[] args)
+        {
+            string storagePath = Path.Combine(Environment.CurrentDirectory, "UserFiles");
+            IFileRepository fileRepository = new FileRepository(storagePath);
+
+            // Save a file
+            string fileName = "example.txt";
+            using (var fileStream = new MemoryStream(Encoding.UTF8.GetBytes("Hello, World!")))
+            {
+                await fileRepository.SaveFileAsync(fileStream, fileName);
+                Console.WriteLine($"File '{fileName}' saved.");
+            }
+
+            // Retrieve a file
+            using (Stream retrievedFile = await fileRepository.GetFileAsync(fileName))
+            {
+                using (var reader = new StreamReader(retrievedFile))
+                {
+                    string content = await reader.ReadToEndAsync();
+                    Console.WriteLine($"Retrieved file content: {content}");
+                }
+            }
+
+            // Update a file
+            using (var updateStream = new MemoryStream(Encoding.UTF8.GetBytes("Updated content!")))
+            {
+                await fileRepository.UpdateFileAsync(updateStream, fileName);
+                Console.WriteLine($"File '{fileName}' updated.");
+            }
+
+            // Retrieve updated file
+            using (Stream updatedFile = await fileRepository.GetFileAsync(fileName))
+            {
+                using (var reader = new StreamReader(updatedFile))
+                {
+                    string updatedContent = await reader.ReadToEndAsync();
+                    Console.WriteLine($"Updated file content: {updatedContent}");
+                }
+            }
+
+            // Delete a file
+            await fileRepository.DeleteFileAsync(fileName);
+            Console.WriteLine($"File '{fileName}' deleted.");
+        }
+    }
+
+}