diff --git a/AppCard.cs b/AppCard.cs
new file mode 100644
index 0000000..f23574e
--- /dev/null
+++ b/AppCard.cs
@@ -0,0 +1,82 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace AppStore
+{
+    public class AppCard : UserControl
+    {
+        private PictureBox iconBox;
+        private Label nameLabel;
+        private Button downloadBtn;
+
+        public string AppName { get; set; } = string.Empty;
+        public Image AppIcon { get; set; } = SystemIcons.Application.ToBitmap();
+        public string DownloadUrl { get; set; } = string.Empty;
+
+        public AppCard()
+        {
+            iconBox = new PictureBox();
+            nameLabel = new Label();
+            downloadBtn = new Button();
+            InitializeComponent();
+        }
+
+        private void InitializeComponent()
+        {
+            this.Size = new Size(200, 120);
+            this.BackColor = Color.White;
+            this.BorderStyle = BorderStyle.FixedSingle;
+
+            // 应用图标
+            iconBox = new PictureBox();
+            iconBox.Size = new Size(64, 64);
+            iconBox.Location = new Point(10, 10);
+            iconBox.SizeMode = PictureBoxSizeMode.StretchImage;
+            this.Controls.Add(iconBox);
+
+            // 应用名称
+            nameLabel = new Label();
+            nameLabel.AutoSize = true;
+            nameLabel.Location = new Point(80, 15);
+            nameLabel.Font = new Font("Microsoft YaHei", 10, FontStyle.Bold);
+            this.Controls.Add(nameLabel);
+
+            // 下载按钮
+            downloadBtn = new Button();
+            downloadBtn.Text = "下载";
+            downloadBtn.Size = new Size(80, 30);
+            downloadBtn.Location = new Point(60, 80);
+            downloadBtn.BackColor = Color.FromArgb(0, 120, 215);
+            downloadBtn.ForeColor = Color.White;
+            downloadBtn.FlatStyle = FlatStyle.Flat;
+            downloadBtn.FlatAppearance.BorderSize = 0;
+            downloadBtn.Click += DownloadBtn_Click;
+            this.Controls.Add(downloadBtn);
+        }
+
+        public void UpdateDisplay()
+        {
+            nameLabel.Text = AppName;
+            iconBox.Image = AppIcon;
+        }
+
+        private void DownloadBtn_Click(object sender, EventArgs e)
+        {
+            if (sender == null || e == null) return;
+            if (!string.IsNullOrEmpty(DownloadUrl))
+            {
+                try
+                {
+                    string fileName = $"{AppName.Replace(" ", "_")}.exe";
+                    DownloadManager.Instance.StartDownload(fileName, DownloadUrl);
+                    MessageBox.Show($"已开始下载: {AppName}", "下载中", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show($"下载失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+        }
+    }
+}
diff --git a/AppStore.csproj b/AppStore.csproj
new file mode 100644
index 0000000..f8301fd
--- /dev/null
+++ b/AppStore.csproj
@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <NoWarn>CS8622</NoWarn>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <WarningsAsErrors>CS8618</WarningsAsErrors>
+    <ApplicationIcon>img\ico\icon.ico</ApplicationIcon>
+    <Platforms>x86;x64</Platforms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="help.txt" />
+    <None Include="resource\aria2c.exe">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="img\png\WindowsCleaner.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="img\ico\icon.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>
diff --git a/DownloadItem.cs b/DownloadItem.cs
new file mode 100644
index 0000000..6882f11
--- /dev/null
+++ b/DownloadItem.cs
@@ -0,0 +1,92 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace AppStore
+{
+    public class DownloadItem : UserControl
+    {
+        private Label nameLabel;
+        private ProgressBar progressBar;
+        private Label statusLabel;
+        private Button cancelBtn;
+
+        public string FileName { get; set; } = string.Empty;
+        public int Progress { get; set; }
+        public string Status { get; set; } = string.Empty;
+
+        public DownloadItem()
+        {
+            nameLabel = new Label();
+            progressBar = new ProgressBar();
+            statusLabel = new Label();
+            cancelBtn = new Button();
+            
+            InitializeComponent();
+        }
+
+        private void InitializeComponent()
+        {
+            this.Size = new Size(400, 60);
+            this.BackColor = Color.White;
+            this.BorderStyle = BorderStyle.FixedSingle;
+
+            // 文件名标签
+            nameLabel = new Label();
+            nameLabel.AutoSize = true;
+            nameLabel.Location = new Point(10, 10);
+            nameLabel.Font = new Font("Microsoft YaHei", 9, FontStyle.Bold);
+            this.Controls.Add(nameLabel);
+
+            // 进度条
+            progressBar = new ProgressBar();
+            progressBar.Size = new Size(200, 20);
+            progressBar.Location = new Point(10, 30);
+            this.Controls.Add(progressBar);
+
+            // 状态标签
+            statusLabel = new Label();
+            statusLabel.AutoSize = true;
+            statusLabel.Location = new Point(220, 30);
+            statusLabel.Font = new Font("Microsoft YaHei", 8);
+            this.Controls.Add(statusLabel);
+
+            // 取消按钮
+            cancelBtn = new Button();
+            cancelBtn.Text = "取消";
+            cancelBtn.Size = new Size(60, 25);
+            cancelBtn.Location = new Point(320, 30);
+            cancelBtn.Click += CancelBtn_Click;
+            this.Controls.Add(cancelBtn);
+        }
+
+        public void UpdateDisplay()
+        {
+            nameLabel.Text = FileName;
+            progressBar.Value = Progress;
+            statusLabel.Text = Status;
+        }
+
+        private void CancelBtn_Click(object sender, EventArgs e)
+        {
+            if (sender == null || e == null) return;
+            if (InvokeRequired)
+            {
+                Invoke(new EventHandler(CancelBtn_Click), sender, e);
+                return;
+            }
+
+            try
+            {
+                DownloadManager.Instance.CancelDownload(this);
+                Status = "已取消";
+                UpdateDisplay();
+            }
+            catch (Exception ex)
+            {
+                Status = $"取消失败: {ex.Message}";
+                UpdateDisplay();
+            }
+        }
+    }
+}
diff --git a/DownloadManager.cs b/DownloadManager.cs
new file mode 100644
index 0000000..fbe7f39
--- /dev/null
+++ b/DownloadManager.cs
@@ -0,0 +1,306 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace AppStore
+{
+    public class DownloadManager
+    {
+        private static DownloadManager instance = null!;
+        public static DownloadManager Instance => instance ??= new DownloadManager();
+
+        private Process? currentProcess;
+        public List<DownloadItem> DownloadItems { get; } = new List<DownloadItem>();
+        
+        public event Action<DownloadItem> DownloadAdded = delegate { };
+        public event Action<DownloadItem> DownloadProgressChanged = delegate { };
+        public event Action<DownloadItem> DownloadCompleted = delegate { };
+
+        // 内部类封装进程结果
+        private class ProcessResult
+        {
+            public int ExitCode { get; set; } = -1;
+            public bool HasExited { get; set; }
+        }
+
+        // 安全获取进程结果
+        private ProcessResult GetProcessResult(Process? process)
+        {
+            var result = new ProcessResult();
+            if (process == null) return result;
+            
+            try 
+            {
+                if (!process.HasExited)
+                {
+                    process.WaitForExit(5000);
+                }
+                
+                result.HasExited = process.HasExited;
+                if (result.HasExited)
+                {
+                    result.ExitCode = process.ExitCode;
+                }
+            }
+            catch 
+            {
+                // 忽略所有异常，使用默认值
+            }
+            
+            return result;
+        }
+
+        public void StartDownload(string fileName, string url)
+        {
+            var downloadItem = new DownloadItem
+            {
+                FileName = fileName,
+                Progress = 0,
+                Status = "准备下载"
+            };
+            
+            DownloadItems.Add(downloadItem);
+            DownloadAdded?.Invoke(downloadItem);
+
+            Task.Run(() => DownloadFile(downloadItem, fileName, url));
+        }
+
+        private void DownloadFile(DownloadItem downloadItem, string fileName, string url)
+        {
+            try
+            {
+                // 设置下载目录为用户文件夹中的Downloads
+                var downloadsDir = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), 
+                    "Downloads");
+                Directory.CreateDirectory(downloadsDir);
+
+                // 构建aria2c路径
+                var aria2cPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "resource", "aria2c.exe");
+                
+                if (!File.Exists(aria2cPath))
+                {
+                    throw new FileNotFoundException($"找不到aria2c.exe: {aria2cPath}");
+                }
+
+                // 设置线程数为16并添加详细日志
+                var arguments = $"--out={fileName} --dir=\"{downloadsDir}\" --split=16 --max-connection-per-server=16 {url}";
+                Console.WriteLine($"下载目录: {downloadsDir}");
+
+                currentProcess = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = aria2cPath,
+                        Arguments = arguments,
+                        WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory,
+                        UseShellExecute = false,
+                        CreateNoWindow = true,
+                        RedirectStandardOutput = true,
+                        RedirectStandardError = true
+                    }
+                };
+
+                // 获取目标文件路径
+                string downloadPath = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
+                    "Downloads",
+                    fileName);
+                
+                long totalSize = 0;
+                
+                // 添加进度检测超时机制
+                var progressTimer = new System.Timers.Timer(5000); // 5秒无更新视为完成
+                progressTimer.Elapsed += (s, e) => {
+                    progressTimer.Stop();
+                    if (downloadItem.Progress < 100) {
+                        downloadItem.Progress = 100;
+                        downloadItem.Status = "下载完成 (100%)";
+                        DownloadProgressChanged?.Invoke(downloadItem);
+                    }
+                };
+                
+                currentProcess.OutputDataReceived += (sender, e) =>
+                {
+                    if (!string.IsNullOrEmpty(e.Data))
+                    {
+                        Console.WriteLine($"输出: {e.Data}");
+                        
+                        // 重置超时计时器
+                        progressTimer.Stop();
+                        progressTimer.Start();
+                        
+                        // 解析总大小
+                        if (e.Data.Contains("Length:"))
+                        {
+                            var sizeStr = e.Data.Split(new[]{"Length:"}, StringSplitOptions.RemoveEmptyEntries)[1]
+                                .Split('(')[0].Trim();
+                            if (long.TryParse(sizeStr, out totalSize))
+                            {
+                                Console.WriteLine($"检测到文件总大小: {totalSize} bytes");
+                            }
+                        }
+                        
+                        // 解析进度百分比
+                        if (e.Data.Contains("%)"))
+                        {
+                            var start = e.Data.IndexOf("(") + 1;
+                            var end = e.Data.IndexOf("%)");
+                            if (start > 0 && end > start)
+                            {
+                                var progressStr = e.Data.Substring(start, end - start);
+                                if (int.TryParse(progressStr, out int progress))
+                                {
+                                    progress = Math.Min(progress, 100);
+                                    downloadItem.Progress = progress;
+                                    downloadItem.Status = $"下载中({progress}%)";
+                                    DownloadProgressChanged?.Invoke(downloadItem);
+                                }
+                            }
+                        }
+                    }
+                };
+
+                currentProcess.ErrorDataReceived += (sender, e) =>
+                {
+                    if (!string.IsNullOrEmpty(e.Data))
+                    {
+                        Console.WriteLine($"错误: {e.Data}");
+                        downloadItem.Status = $"错误: {e.Data}";
+                        DownloadProgressChanged?.Invoke(downloadItem);
+                    }
+                };
+
+                currentProcess.Exited += (sender, e) =>
+                {
+                    var process = currentProcess;
+                    if (process == null) return;
+                    
+                    var result = GetProcessResult(process);
+                    
+                    if (result.ExitCode == 0)
+                    {
+                        // 最终状态强制更新
+                        downloadItem.Progress = 100;
+                        downloadItem.Status = "下载完成 (100%)";
+                        
+                        // 验证文件完整性
+                        string downloadPath = Path.Combine(
+                            Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
+                            "Downloads",
+                            downloadItem.FileName);
+                            
+                        if (File.Exists(downloadPath))
+                        {
+                            Console.WriteLine($"文件下载完成: {downloadPath}");
+                        }
+                        else
+                        {
+                            Console.WriteLine("警告: 下载完成但文件不存在");
+                        }
+                        
+                        // 触发界面更新
+                        DownloadProgressChanged?.Invoke(downloadItem);
+                        DownloadCompleted?.Invoke(downloadItem);
+                        downloadItem.UpdateDisplay();
+                        
+                        try 
+                        {
+                            // 双重确保在主线程显示提示
+                            if (Application.OpenForms.Count > 0)
+                            {
+                                var mainForm = Application.OpenForms[0];
+                                mainForm.Invoke((MethodInvoker)delegate {
+                                    MessageBox.Show(mainForm, 
+                                        $"文件 {downloadItem.FileName} 已成功下载到：\n{Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads", downloadItem.FileName)}", 
+                                        "下载完成", 
+                                        MessageBoxButtons.OK, 
+                                        MessageBoxIcon.Information);
+                                });
+                            }
+                            else
+                            {
+                                Console.WriteLine("下载完成提示：无法找到主窗体");
+                            }
+                        }
+                        catch (Exception ex)
+                        {
+                            Console.WriteLine($"显示下载完成提示时出错：{ex}");
+                        }
+                    }
+                    else
+                    {
+                        downloadItem.Status = $"下载失败 (代码: {result.ExitCode})";
+                        MessageBox.Show($"文件 {downloadItem.FileName} 下载失败", "下载失败", 
+                            MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                    
+                    DownloadCompleted?.Invoke(downloadItem);
+                    
+                    try
+                    {
+                        process?.Dispose();
+                    }
+                    finally
+                    {
+                        if (process != null)
+                        {
+                            currentProcess = null;
+                        }
+                    }
+                    
+                    // 强制更新显示
+                    downloadItem.UpdateDisplay();
+                };
+
+                Console.WriteLine($"启动aria2c: {aria2cPath}");
+                Console.WriteLine($"参数: {arguments}");
+
+                if (!currentProcess.Start())
+                {
+                    throw new Exception("进程启动失败");
+                }
+
+                currentProcess.BeginOutputReadLine();
+                currentProcess.BeginErrorReadLine();
+                progressTimer.Start();
+            }
+            catch (Exception ex)
+            {
+                downloadItem.Status = $"下载错误: {ex.Message}";
+                Console.WriteLine($"下载错误: {ex}");
+                DownloadCompleted?.Invoke(downloadItem);
+            }
+        }
+
+        public void CancelDownload(DownloadItem item)
+        {
+            try
+            {
+                var process = currentProcess;
+                if (process == null || process.HasExited || process.StartInfo == null)
+                {
+                    item.Status = "已取消";
+                    DownloadProgressChanged?.Invoke(item);
+                    return;
+                }
+
+                process.Kill();
+                process.Dispose();
+                currentProcess = null;
+                
+                item.Status = "已取消";
+                DownloadProgressChanged?.Invoke(item);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"取消下载时出错: {ex}");
+                item.Status = $"取消失败: {ex.Message}";
+                DownloadProgressChanged?.Invoke(item);
+            }
+        }
+    }
+}
diff --git a/MainForm.cs b/MainForm.cs
new file mode 100644
index 0000000..e7ef59a
--- /dev/null
+++ b/MainForm.cs
@@ -0,0 +1,158 @@
+#nullable enable
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace AppStore
+{
+    public class MainForm : Form
+    {
+        private Button btnApps = null!;
+        private Button btnDownloads = null!;
+        private Panel contentPanel = null!;
+
+        private void InitializeComponent()
+        {
+            // 窗体基本设置
+            this.Text = "应用商店";
+            this.Size = new Size(800, 600);
+            this.StartPosition = FormStartPosition.CenterScreen;
+            this.Icon = new Icon("img/ico/icon.ico");
+
+            // 顶部按钮面板
+            Panel buttonPanel = new Panel();
+            buttonPanel.Dock = DockStyle.Top;
+            buttonPanel.Height = 50;
+            buttonPanel.BackColor = Color.LightGray;
+            
+            // 软件下载按钮
+            btnApps = new Button();
+            btnApps.Text = "软件下载";
+            btnApps.Size = new Size(100, 30);
+            btnApps.Location = new Point(20, 10);
+            btnApps.Font = new Font("Microsoft YaHei", 9);
+            btnApps.Click += (s, e) => ShowAppsView();
+            buttonPanel.Controls.Add(btnApps);
+            
+            // 下载进度按钮
+            btnDownloads = new Button();
+            btnDownloads.Text = "下载进度";
+            btnDownloads.Size = new Size(100, 30);
+            btnDownloads.Location = new Point(140, 10);
+            btnDownloads.Font = new Font("Microsoft YaHei", 9);
+            btnDownloads.Click += (s, e) => ShowDownloadsView();
+            buttonPanel.Controls.Add(btnDownloads);
+            
+            this.Controls.Add(buttonPanel);
+
+            // 内容区域
+            contentPanel = new Panel();
+            contentPanel.Dock = DockStyle.Fill;
+            contentPanel.Padding = new Padding(20);
+            this.Controls.Add(contentPanel);
+
+            // 默认显示软件下载视图
+            ShowAppsView();
+        }
+
+        private void ShowAppsView()
+        {
+            contentPanel.Controls.Clear();
+
+            // 使用FlowLayoutPanel来组织应用卡片
+            // 使用FlowLayoutPanel实现自动流式布局
+            FlowLayoutPanel flowPanel = new FlowLayoutPanel();
+            flowPanel.Dock = DockStyle.Fill;
+            flowPanel.AutoScroll = true;
+            flowPanel.Padding = new Padding(10, 30, 10, 10); // 增加顶部间距
+            flowPanel.WrapContents = true;
+            contentPanel.Controls.Add(flowPanel);
+
+            // 创建WindowsCleaner应用卡片
+            AppCard windowsCleanerCard = new AppCard();
+            windowsCleanerCard.AppName = "WindowsCleaner";
+            windowsCleanerCard.DownloadUrl = "https://ghproxy.net/https://github.com/darkmatter2048/WindowsCleaner/releases/download/v5.0.8/windowscleaner_v5.0.8_amd64_x64_setup.exe";
+            
+            try
+            {
+                // 加载应用图标
+                windowsCleanerCard.AppIcon = Image.FromFile("img/png/WindowsCleaner.png");
+            }
+            catch
+            {
+                // 如果图标加载失败，使用默认图标
+                windowsCleanerCard.AppIcon = SystemIcons.Application.ToBitmap();
+            }
+            
+            windowsCleanerCard.UpdateDisplay();
+            // 添加卡片到流式布局
+            flowPanel.Controls.Add(windowsCleanerCard);
+        }
+
+        private FlowLayoutPanel downloadsFlowPanel = new FlowLayoutPanel();
+        private List<DownloadItem> downloadItems = new List<DownloadItem>();
+
+        public MainForm()
+        {
+            InitializeComponent();
+            // 订阅下载管理器事件
+            DownloadManager.Instance.DownloadAdded += OnDownloadAdded;
+            DownloadManager.Instance.DownloadProgressChanged += OnDownloadProgressChanged;
+            DownloadManager.Instance.DownloadCompleted += OnDownloadCompleted;
+        }
+
+        private void ShowDownloadsView()
+        {
+            contentPanel.Controls.Clear();
+
+            // 使用FlowLayoutPanel组织下载项
+            downloadsFlowPanel = new FlowLayoutPanel();
+            downloadsFlowPanel.Dock = DockStyle.Fill;
+            downloadsFlowPanel.AutoScroll = true;
+            downloadsFlowPanel.Padding = new Padding(10, 30, 10, 10); // 增加顶部间距
+            downloadsFlowPanel.FlowDirection = FlowDirection.TopDown;
+            downloadsFlowPanel.WrapContents = false;
+            contentPanel.Controls.Add(downloadsFlowPanel);
+
+            // 显示所有下载项
+            foreach (var item in DownloadManager.Instance.DownloadItems)
+            {
+                downloadsFlowPanel.Controls.Add(item);
+            }
+        }
+
+        private void OnDownloadAdded(DownloadItem item)
+        {
+            if (InvokeRequired)
+            {
+                Invoke(new Action<DownloadItem>(OnDownloadAdded), item);
+                return;
+            }
+
+            downloadItems.Add(item);
+            downloadsFlowPanel?.Controls.Add(item);
+        }
+
+        private void OnDownloadProgressChanged(DownloadItem item)
+        {
+            if (InvokeRequired)
+            {
+                Invoke(new Action<DownloadItem>(OnDownloadProgressChanged), item);
+                return;
+            }
+
+            item.UpdateDisplay();
+        }
+
+        private void OnDownloadCompleted(DownloadItem item)
+        {
+            if (InvokeRequired)
+            {
+                Invoke(new Action<DownloadItem>(OnDownloadCompleted), item);
+                return;
+            }
+
+            item.UpdateDisplay();
+        }
+    }
+}
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..9ce17df
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Windows.Forms;
+
+namespace AppStore
+{
+    static class Program
+    {
+        [STAThread]
+        static void Main()
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(new MainForm());
+        }
+    }
+}
diff --git a/img/ico/icon.ico b/img/ico/icon.ico
new file mode 100644
index 0000000..d973473
Binary files /dev/null and b/img/ico/icon.ico differ
diff --git a/img/png/WindowsCleaner.png b/img/png/WindowsCleaner.png
new file mode 100644
index 0000000..5d9e8a5
Binary files /dev/null and b/img/png/WindowsCleaner.png differ
diff --git a/img/png/kortapp-z.png b/img/png/kortapp-z.png
new file mode 100644
index 0000000..f92a09a
Binary files /dev/null and b/img/png/kortapp-z.png differ
diff --git a/resource/aria2c.exe b/resource/aria2c.exe
new file mode 100644
index 0000000..5004e10
Binary files /dev/null and b/resource/aria2c.exe differ