在ASP.NET中显示缩略图的最佳方法是什么？

<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Image ID="Image1" runat="server" />

using System.Drawing;
using System.IO;

protected void Page_Load(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
        // 读取上传的图片文件
        Stream fileStream = FileUpload1.PostedFile.InputStream;
        Bitmap originalImage = (Bitmap)Bitmap.FromStream(fileStream);

        // 计算缩略图的尺寸
        int width = 100;
        int height = (int)(originalImage.Height * 100.0 / originalImage.Width);

        // 创建缩略图
        Bitmap thumbnail = new Bitmap(originalImage, new Size(width, height));

        // 将缩略图显示在Image控件中
        Image1.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(ImageToByteArray(thumbnail));
    }
}

private byte[] ImageToByteArray(Bitmap image)
{
    using (MemoryStream ms = new MemoryStream())
    {
        image.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        return ms.ToArray();
    }
}