如何在c#上传图片后自动从中心裁剪图片？

string imagePath = "上传图片的路径";
string savePath = "保存裁剪后图片的路径";

// 保存上传的图片
using (var image = new Bitmap(imagePath))
{
    image.Save(savePath);
}

int targetSize = Math.Min(image.Width, image.Height);

using (var image = new Bitmap(imagePath))
{
    int x = (image.Width - targetSize) / 2;
    int y = (image.Height - targetSize) / 2;

    // 创建一个新的Bitmap对象来存储裁剪后的图片
    using (var croppedImage = new Bitmap(targetSize, targetSize))
    {
        using (var graphics = Graphics.FromImage(croppedImage))
        {
            graphics.DrawImage(image, new Rectangle(0, 0, targetSize, targetSize), new Rectangle(x, y, targetSize, targetSize), GraphicsUnit.Pixel);
        }

        // 保存裁剪后的图片
        croppedImage.Save(savePath);
    }
}