在.net上的点阵式打印机上打印

using System.Drawing;
using System.Drawing.Printing;

// 创建要打印的图像
Bitmap bmp = new Bitmap(800, 800);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.White);
g.DrawString("Hello, World!", new Font("Arial", 48), Brushes.Black, new PointF(100, 100));

// 创建打印文档对象
PrintDocument pd = new PrintDocument();
pd.PrinterSettings.PrinterName = "Your Printer Name"; // 设置打印机名称
pd.PrintPage += (sender, e) =>
{
    e.Graphics.DrawImage(bmp, 0, 0); // 将图像绘制到打印页面
};

// 打印图像
pd.Print();