[C#] 壓縮圖檔 resize image

using System.Drawing;

static void Main(string[] args)
{
       // 讀取圖片到bitmap，需自行設定路徑
       Bitmap originalImage = new Bitmap("original.jpg");

       // 設定長寬，就算原尺寸容量也會差很多喔
       int newWidth = 300;
       int newHeight = (int)(originalImage.Height * ((float)newWidth / originalImage.Width));

       //新增一個bipmap暫存
       Bitmap resizedImage = new Bitmap(newWidth, newHeight);

       //寫入暫存圖檔
       using (Graphics g = Graphics.FromImage(resizedImage))
       {
           g.DrawImage(originalImage, 0, 0, newWidth, newHeight);
       }

       //儲存
       resizedImage.Save("resized.jpg", ImageFormat.Jpeg);
}