Add files via upload

初始化

AppCard.cs

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+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);
+                }
+            }
+        }
+    }
+}