如何在C#中裁剪出图片大小的纸张？

using System.Drawing;
using System.Drawing.Imaging;

Image originalImage = Image.FromFile("图片路径");

int targetWidth = 800; // 目标纸张宽度
int targetHeight = 600; // 目标纸张高度
Bitmap targetBitmap = new Bitmap(targetWidth, targetHeight);
Graphics graphics = Graphics.FromImage(targetBitmap);

graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; // 设置平滑模式
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic; // 设置插值模式
graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality; // 设置像素偏移模式
graphics.Clear(Color.White); // 设置背景颜色

graphics.DrawImage(originalImage, new Rectangle(0, 0, targetWidth, targetHeight));

targetBitmap.Save("保存路径", ImageFormat.Jpeg); // 根据需要选择保存格式