Add files via upload

MainForm.cs

@@ -104,8 +104,7 @@ namespace AppStore
             styleButton(btnAbout);
             btnAbout.Click += (s, e) => {
                 Logger.Log("用户点击了'关于'按钮");
-                var aboutForm = new AboutForm();
-                aboutForm.ShowDialog();
+                ShowAboutView();
             };
             buttonPanel.Controls.Add(btnAbout);
             
@@ -135,8 +134,16 @@ namespace AppStore
         /// </summary>
         private void ShowSettingsView()
         {
-            var settingsForm = new SettingsForm();
-            settingsForm.ShowDialog(); // 以模态对话框形式显示设置窗口
+            contentPanel.Controls.Clear();
+            var settingsControl = new SettingsUserControl();
+            contentPanel.Controls.Add(settingsControl);
+        }
+
+        private void ShowAboutView()
+        {
+            contentPanel.Controls.Clear();
+            var aboutControl = new AboutUserControl();
+            contentPanel.Controls.Add(aboutControl);
         }
 
         /// <summary>
@@ -216,6 +223,11 @@ namespace AppStore
                 "https://ghproxy.net/https://github.com/amir1376/ab-download-manager/releases/download/v1.6.4/ABDownloadManager_1.6.4_windows_x64.exe",
                 "img/png/ABDM.png"));
 
+            flowPanel.Controls.Add(CreateAppCard(
+                "NDM",
+                "https://ghproxy.net/https://github.com/zs-yg/package/releases/download/v0.7/NeatDM_setup.exe",
+                "img/jpg/NDM.jpg"));
+
             flowPanel.Controls.Add(CreateAppCard(
                 "python3.8",
                 "https://www.python.org/ftp/python/3.8.0/python-3.8.0-amd64.exe",
@@ -306,6 +318,11 @@ namespace AppStore
                 "https://visualstudio.microsoft.com/zh-hans/thank-you-downloading-visual-studio/?sku=Community&channel=Release&version=VS2022&source=VSLandingPage&cid=2030&passive=false",
                 "img/jpg/vs.jpg"));
 
+            flowPanel.Controls.Add(CreateAppCard(
+                "VSCodium",
+                "https://visualstudio.microsoft.com/zh-hans/thank-you-downloading-visual-studio/?sku=Community&channel=Release&version=VS2022&source=VSLandingPage&cid=2030&passive=false",
+                "img/png/codium_cnl.png"));
+
             flowPanel.Controls.Add(CreateAppCard(
                 "7-Zip",
                 "https://objects.githubusercontent.com/github-production-release-asset-2e65be/466446150/1645817e-3677-4207-93ff-e62de7e147be?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=releaseassetproduction%2F20250613%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20250613T035936Z&X-Amz-Expires=300&X-Amz-Signature=5e02d5fc34f45bd8308029c9fc78052007e9475ce0e32775619921cb8f3b83ea&X-Amz-SignedHeaders=host&response-content-disposition=attachment%3B%20filename%3D7z2409-x64.exe&response-content-type=application%2Foctet-stream",