将html转换成图片,然后打印图片就可以了using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;namespace DMS.Client.Command
{
    public class GetImage
    {
        private int S_Height;
        private int S_Width;
        private int F_Height;
        private int F_Width;
        private string HTML;        public int ScreenHeight
        {
            get { return S_Height; }
            set { S_Height = value; }
        }        public int ScreenWidth
        {
            get { return S_Width; }
            set { S_Width = value; }
        }        public int ImageHeight
        {
            get { return F_Height; }
            set { F_Height = value; }
        }        public int ImageWidth
        {
            get { return F_Width; }
            set { F_Width = value; }
        }        public string WebSite
        {
            get { return HTML; }
            set { HTML = value; }
        }        public GetImage(string WebSite, int ScreenWidth, int ScreenHeight, int ImageWidth, int ImageHeight)
        {
            this.WebSite = WebSite;
            this.ScreenWidth = ScreenWidth;
            this.ScreenHeight = ScreenHeight;
            this.ImageHeight = ImageHeight;
            this.ImageWidth = ImageWidth;
        }        public Bitmap GetBitmap()
        {
            WebPageBitmap Shot = new WebPageBitmap(this.WebSite, this.ScreenWidth, this.ScreenHeight);
            Shot.GetIt();
            Bitmap Pic = Shot.DrawBitmap(this.ImageHeight, this.ImageWidth);
            return Pic;
        }
    }    class WebPageBitmap
    {
        WebBrowser MyBrowser;
        string HTML;
        int Height;
        int Width;        public WebPageBitmap(string html, int width, int height)
        {
            this.Height = height;
            this.Width = width;
            this.HTML = html;
            MyBrowser = new WebBrowser();
            MyBrowser.ScrollBarsEnabled = false;
            MyBrowser.Size = new Size(this.Width, this.Height);
        }        public void GetIt()
        {
           MyBrowser.DocumentText = HTML;
            //也可用rul
            //MyBrowser.Navigate(@"C:\Documents and Settings\Administrator\桌面\1.html");
            while (MyBrowser.ReadyState != WebBrowserReadyState.Complete)
            {
                Application.DoEvents();
                System.Threading.Thread.Sleep(100);
            }
        }        public Bitmap DrawBitmap(int theight, int twidth)
        {
            Bitmap myBitmap = new Bitmap(Width, Height);
            Rectangle DrawRect = new Rectangle(0, 0, Width, Height);
            MyBrowser.DrawToBitmap(myBitmap, DrawRect);
            System.Drawing.Image imgOutput = myBitmap;
            System.Drawing.Image oThumbNail = new Bitmap(twidth, theight, imgOutput.PixelFormat);
            Graphics g = Graphics.FromImage(oThumbNail);
            g.CompositingQuality = CompositingQuality.HighSpeed;
            g.SmoothingMode = SmoothingMode.HighSpeed;
            g.InterpolationMode = InterpolationMode.HighQualityBilinear;
            Rectangle oRectangle = new Rectangle(0, 0, twidth, theight);
            g.DrawImage(imgOutput, oRectangle);
            try
            {
                return (Bitmap)oThumbNail;
            }
            catch (Exception ex)
            {
                return null;
            }
            finally
            {
                imgOutput.Dispose();
                imgOutput = null;
                MyBrowser.Dispose();
                MyBrowser = null;
            }
        }
    }
}

解决方案 »

  1.   

      Command.GetImage thumb = new Command.GetImage(html, 800, 900, 800, 900);
                System.Drawing.Bitmap bp = thumb.GetBitmap();
                string path = Application.StartupPath + "\\aaa";
                if (!System.IO.Directory.Exists(path))
                    System.IO.Directory.CreateDirectory(path);
                string name = orderCode + "(" + DateTime.Now.ToString("yyyyMMdd") + ").jpg";
                imgPath = path + "\\" + name;
                bp.Save(imgPath);// GetImage(imgPath);
            }
      

  2.   

    转成图片再打印 确实可以,不过打印出来有点模糊,图片是清晰的,不知道什么原因。 后来用webBrowser加载html来实现打印。不过还是非常感谢。