Dictionary<string, string> dic_User = new Dictionary<string, string>();dic_User.Add("input", "" + ds.Tables[0].Rows[0]["surname"] + ds.Tables[0].Rows[0]["userName"] + "");//当前接收发证人的姓名dic_User.Add("x", "600");dic_User.Add("y", "700");dic_User.Add("middle", "true");//是否居中显示  true 居中 false 不居中
Dictionary<string, string> dic_CourseName = new Dictionary<string, string>();dic_CourseName.Add("input", "" + ds.Tables[0].Rows[0]["courseName"] + "");//课程名称dic_CourseName.Add("x", "600");dic_CourseName.Add("y", "900");dic_CourseName.Add("middle", "true");//是否居中显示  true 居中 false 不居中
Dictionary<string, string> dic_Time = new Dictionary<string, string>();dic_Time.Add("input", "" + Convert.ToDateTime(ds.Tables[0].Rows[0]["StartTime"]).ToString("yyyy.MM.dd") + "-" + Convert.ToDateTime(ds.Tables[0].Rows[0]["EndTime"]).ToString("yyyy.MM.dd") + "");//证书有效期dic_Time.Add("x", "600");dic_Time.Add("y", "1200");dic_Time.Add("middle", "true");//是否居中显示  true 居中 false 不居中
Dictionary<string, string> dic_teacher = new Dictionary<string, string>();  //学员讲师dic_teacher.Add("input", "" + ds.Tables[0].Rows[0]["teacher"] + "");dic_teacher.Add("x", "400");dic_teacher.Add("y", "1500");dic_teacher.Add("middle", "flase");//是否居中显示  true 居中 false 不居中
List<Dictionary<string, string>> listdict = new List<Dictionary<string, string>>();listdict.Add(dic_User);listdict.Add(dic_CourseName);listdict.Add(dic_Time);listdict.Add(dic_teacher);BuildImage.CreateImgage(listdict, Color.Black, ConfigurationManager.AppSettings["examfile"].ToString() + ds.Tables[0].Rows[0]["Url"], tid);ImagePrint.ImageUrl = "tempPic/" + tid + ".jpg";

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Drawing.Drawing2D;
using System.Net;namespace ELearning.ELearning.Common
{/// <summary>/// 图片提供程序/// create by gaoxing /// 2013-06-09/// </summary>public static class ImageProvider{private static BuildImage buildImage = null;/// <summary>/// 生成图片/// create by gaoxing /// 2013-06-09/// </summary>public static BuildImage Provider{get{if (buildImage == null){buildImage = new BuildImage();}return buildImage;}}}public class BuildImage{private static Matrix m = new Matrix();// 定义字体private static Font[] fonts = {new Font(new FontFamily("Times New Roman"), 18, FontStyle.Bold),new Font(new FontFamily("Georgia"), 18 , FontStyle.Bold),new Font(new FontFamily("Helvetica"), 18, FontStyle.Bold),new Font(new FontFamily("Arial"), 18 , FontStyle.Bold)};/// <summary>/// 生成图片/// create by gaoxing 2013-06-09/// </summary>/// <param name="str">传入字符串</param>/// <param name="bgImg">当前图片对象</param>/// <param name="x">X坐标</param>/// <param name="y">Y坐标</param>/// <param name="color">当前字体颜色</param>/// <param name="middle">是否居中显示  true 居中显示  false 不居中显示</param>/// <returns></returns>private ImageInfo GenerateImage(string str, System.Drawing.Image bgImg, float x, float y, Color color, object middle){ImageInfo imageInfo = new ImageInfo();imageInfo.ImageFormat = ImageFormat.Jpeg;imageInfo.ContentType = "image/pjpeg";Bitmap bitmap = new Bitmap(bgImg, bgImg.Width, bgImg.Height);Graphics g = Graphics.FromImage(bitmap);//是否居中显示if (middle != null){if (middle.ToString() == "true"){//设置X坐标x = SetX(str, x, bitmap, g);}}// 定义前景色 字体颜色SolidBrush drawBrush = new SolidBrush(color);// 写字g.DrawString(str, fonts[3], drawBrush, new PointF(x, y));GetStringLength(str, g);g.ResetTransform();drawBrush.Dispose();g.Dispose();g.Dispose();imageInfo.Image = bitmap;return imageInfo;}/// <summary>/// 设置X坐标（居中显示）/// create by gaoxing /// </summary>/// <param name="str">当前要显示的字符串</param>/// <param name="x">X坐标</param>/// <param name="bitmap">当前的图片对象</param>/// <param name="g">当前的图形对象</param>/// <returns>更新后的X</returns>private static float SetX(string str, float x, Bitmap bitmap, Graphics g){/计算字符串的长度/Graphics tmpG = g;SizeF size = tmpG.MeasureString(str, fonts[3]);float length = size.Width;////计算当前字符串的长度//计算当前字符串的起始像素float piclength = bitmap.Width;x = (piclength / 2) - (length / 2)-25;return x;}/// <summary>/// 获取当前字符串的像素长度/// create by gaoxing /// </summary>/// <param name="str">输入字符串</param>/// <param name="g"></param>private static float GetStringLength(string str, Graphics g){/计算字符串的长度/Graphics tmpG = g;SizeF size = tmpG.MeasureString(str, fonts[3]);float StringWidth = size.Width;return StringWidth;//
        }/// <summary>/// 下载文件/// create by 高兴/// 2013-06-09/// </summary>/// <param name="uriString">网络路径地址</param>/// <param name="id">当前Id</param>/// <returns></returns>private static string DownLoadFile(string uriString, string id){Uri address = new Uri(uriString);string fileName = HttpContext.Current.Server.MapPath("TempPic") + @"\" + id + "Model.jpg";using (WebClient wc = new WebClient()){try{wc.DownloadFile(address, fileName);}catch { }return fileName;}}/// <summary>/// 生成图片，主方法调用/// 传入数据集合/// 每个字典为一组输入数据/// key=input:要打印的字符/// key=x X坐标/// key=y X坐标/// Create by gaoxing/// 2013-06-09/// </summary>/// <param name="listdict">集合数据</param>/// <param name="color">当前字体颜色</param>/// <param name="ImgUrl">图片网络路径</param>/// <param name="imgId">图片Id</param>/// <returns></returns>public static void CreateImgage(List<Dictionary<string, string>> listdict, Color color, string ImgUrl, string imgId){////更改Http头//HttpContext.Current.Response.ClearContent();//HttpContext.Current.Response.ContentType = "image/pjpeg";//HttpContext.Current.Response.BinaryWrite(BuildImage.GetImage(listdict, color, BuildImage.DownLoadFile(ImgUrl, imgId)).ToArray());//HttpContext.Current.Response.End();string fileName = HttpContext.Current.Server.MapPath("TempPic") + "/" + imgId + ".jpg";using (MemoryStream ms = new MemoryStream(BuildImage.GetImage(listdict, color, BuildImage.DownLoadFile(ImgUrl, imgId)).ToArray())){Image image = new Bitmap(ms, true);if (File.Exists(fileName)){File.Delete(fileName);}image.Save(fileName);}}/// <summary>/// 传入数据集合/// 每个字典为一组输入数据/// key=input:要打印的字符/// key=x X坐标/// key=y X坐标/// Create by gaoxing/// 2013-06-09/// </summary>/// <param name="listdict">集合数据</param>/// <param name="color">当前字体颜色</param>/// <param name="imgPath">图片路径</param>/// <returns></returns>private static MemoryStream GetImage(List<Dictionary<string, string>> listdict, Color color, string imgPath){BuildImage buildImage = ImageProvider.Provider;ImageInfo imageInfo = new ImageInfo();using (MemoryStream ms = new MemoryStream()){int i = 0;foreach (Dictionary<string, string> dic in listdict){if (i < 1){imageInfo = buildImage.GenerateImage(dic["input"].ToString(), System.Drawing.Image.FromFile(imgPath), float.Parse(dic["x"].ToString()), float.Parse(dic["y"].ToString()), color, dic["middle"].ToString());}else{imageInfo = buildImage.GenerateImage(dic["input"].ToString(), imageInfo.Image, float.Parse(dic["x"].ToString()), float.Parse(dic["y"].ToString()), color, dic["middle"].ToString());}i++;}long with = System.Drawing.Image.FromFile(imgPath).Width;imageInfo.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);return ms;}}}/// <summary>/// 图片信息/// create by gaoxing /// 2013-06-09/// </summary>public class ImageInfo{private Bitmap image;private string contentType = "image/pjpeg";private ImageFormat imageFormat = ImageFormat.Jpeg;/// <summary>/// 生成的图片/// </summary>public Bitmap Image{get { return image; }set { image = value; }}/// <summary>/// 图片类型，如 image/pjpeg/// </summary>public string ContentType{get { return contentType; }set { contentType = value; }}/// <summary>/// 图片格式/// </summary>public ImageFormat ImageFormat{get { return imageFormat; }set { imageFormat = value; }}}
}