C#异步位图调整大小

using System;
using System.Drawing;
using System.Threading.Tasks;

public class Program
{
    public static async Task<Bitmap> ResizeBitmapAsync(Bitmap originalBitmap, int newWidth, int newHeight)
    {
        return await Task.Run(() =>
        {
            Bitmap resizedBitmap = new Bitmap(newWidth, newHeight);
            using (Graphics graphics = Graphics.FromImage(resizedBitmap))
            {
                graphics.DrawImage(originalBitmap, 0, 0, newWidth, newHeight);
            }
            return resizedBitmap;
        });
    }

    public static async Task Main()
    {
        // 加载原始位图
        Bitmap originalBitmap = new Bitmap("original.jpg");

        // 调整位图大小
        Bitmap resizedBitmap = await ResizeBitmapAsync(originalBitmap, 800, 600);

        // 保存调整后的位图
        resizedBitmap.Save("resized.jpg");

        Console.WriteLine("位图调整大小完成！");
    }
}