java版：https://my.oschina.net/HJCui/blog/804955

将文本写在图片上，自定义字体，自动换行，自定义行间距。

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Text;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;namespace StringToImg_costomerFont
{class Program{static void Main(string[] args){string text = @"张家口市地处京晋冀蒙交界处,距北京约180公里,这里地势险要,有“塞外山城”之称。冬季白雪皑皑,一片北国风光,山上积雪数尺,整冬不化,是滑雪旅游的天然胜地。全市地势西北高、东南低,阴山山脉横贯中部,将全市划分为坝上、坝下两个自然地理区域。坝上地区地势......";//string text = @"永和九年，岁在癸丑，暮春之初，会于会稽山阴之兰亭，修禊事也。群贤毕至，少长咸集。此地有崇山峻岭，茂林修竹；又有清流激湍，映带左右，引以为流觞曲水，列坐其次。虽无丝竹管弦之盛，一觞一咏，亦足以畅叙幽情。是日也，天朗气清，惠风和畅，仰观宇宙之大，俯察品类之盛，所以游目骋怀，足以极视听之娱，信可乐也。//夫人之相与，俯仰一世，或取诸怀抱，悟言一室之内；或因寄所托，放浪形骸之外。虽趣舍万殊，静躁不同，当其欣于所遇，暂得于己，快然自足，曾不知老之将至。及其所之既倦，情随事迁，感慨系之矣。向之所欣，俯仰之间，已为陈迹，犹不能不以之兴怀。况修短随化，终期于尽。古人云：“死生亦大矣。”岂不痛哉！//每览昔人兴感之由，若合一契，未尝不临文嗟悼，不能喻之于怀。固知一死生为虚诞，齐彭殇为妄作。后之视今，亦犹今之视昔。悲夫！故列叙时人，录其所述，虽世殊事异，所以兴怀，其致一也。后之览者，亦将有感于斯文。--Edit by hjcui on 2016-12-8";string strSavePath = "C:/test/chn.jpeg";addStringToImg(strSavePath, text);text = "Why I Love Beijing";strSavePath = "C:/test/Eng.jpeg";AddTextToImg(strSavePath, text);}private static void AddTextToImg(string SavePath, string text){int phWidth = 642;int phHeight = 177;#region 绘制图片System.IO.Directory.CreateDirectory(Path.GetDirectoryName(SavePath));System.Drawing.Imaging.ImageFormat format = System.Drawing.Imaging.ImageFormat.Jpeg;//Image initImage = (Image)Img.Clone();//生成新图//新建一个bmp图片System.Drawing.Image newImage = new System.Drawing.Bitmap(phWidth, phHeight);//新建一个画板System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(newImage);//设置质量g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;//置背景色g.Clear(Color.White);//画图//g.DrawImage(newImage, new Rectangle(0, 0, phWidth, phHeight), 0, 0, phWidth, phHeight, GraphicsUnit.Pixel);g.DrawImage(newImage, 0, 0);//路径       //string path = @"C:\德彪钢笔行书字库.TTF";string path = @"G:\项目需求\13品牌主页\PingFang Bold.ttf";//读取字体文件             PrivateFontCollection pfc = new PrivateFontCollection();pfc.AddFontFile(path);//实例化字体float fontSize = 28;//关于自定义行间距，stackoverflow 中的解释 //Line spacing is a result of the Font you are using.//You may need to break your DrawString commands up into multiple calls if you need custom line spacing.int a = pfc.Families[0].GetLineSpacing(FontStyle.Regular);Font font = new Font(pfc.Families[0], fontSize);//设置字体  //下面定义一个矩形区域，以后在这个矩形里画上白底黑字  float rectX = -1;float rectY = -1;float rectWidth = phWidth;float rectHeight = phHeight;//声明矩形域  RectangleF textArea = new RectangleF(rectX, rectY, rectWidth, rectHeight);//g.FillRectangle(whiteBrush, rectX, rectY, rectWidth, rectHeight);StringFormat drawFormat = new StringFormat();//drawFormat.FormatFlags = StringFormatFlags.FitBlackBox;drawFormat.Alignment = StringAlignment.Center;//drawFormat.FormatFlags = StringFormatFlags.DisplayFormatControl;drawFormat.LineAlignment = StringAlignment.Center;Brush brush = new SolidBrush(Color.FromArgb(135, 135, 135));g.DrawString(text, font, brush, textArea, drawFormat);int level = 100; //图像质量 1-100的范围ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();ImageCodecInfo ici = null;foreach (ImageCodecInfo codec in codecs){if (codec.MimeType == "image/jpeg")ici = codec;}EncoderParameters ep = new EncoderParameters();ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)level);//保存图newImage.Save(SavePath, ici, ep);#endregion//释放资源g.Dispose();newImage.Dispose();//MemoryStream ms = new MemoryStream();保存为Jpg类型  //bitmap.Save(ms, ImageFormat.Jpeg);//Response.Clear();//Response.ContentType = "image/jpeg";//Response.BinaryWrite(ms.ToArray());}private static void addStringToImg(string SavePath, string text, string strFontPath = null){int phWidth = 642;int phHeight = 377;//System.IO.Directory.CreateDirectory(Path.GetDirectoryName(SavePath));System.Drawing.Imaging.ImageFormat format = System.Drawing.Imaging.ImageFormat.Jpeg;//新建一个bmp图片Image newImage = new Bitmap(phWidth, phHeight);//新建一个画板Graphics g = Graphics.FromImage(newImage);//设置质量g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;//置背景色g.Clear(Color.White);//画图//g.DrawImage(newImage, new Rectangle(0, 0, phWidth, phHeight), 0, 0, phWidth, phHeight, GraphicsUnit.Pixel);g.DrawImage(newImage, 0, 0);#region 自定义字体//路径       //string path = @"C:\德彪钢笔行书字库.TTF";strFontPath = strFontPath ?? @"C:\华康瘦金体W3.TTF";//读取字体文件             PrivateFontCollection pfc = new PrivateFontCollection();pfc.AddFontFile(strFontPath);//实例化字体float fontSize = 28;Font font = new Font(pfc.Families[0], fontSize);#endregion// 自定义行间距SizeF fit = new SizeF(phWidth, font.Height);StringFormat fmt = StringFormat.GenericTypographic;//fmt.FormatFlags = StringFormatFlags.LineLimit;//int spacing = (int)(1.5 * font.Height);int spacing = (int)(10 + font.Height);//自定义字体颜色Brush brush = new SolidBrush(Color.FromArgb(65, 65, 65));int line = 0;for (int ix = 0; ix < text.Length; ){int chars, lines;g.MeasureString(text.Substring(ix), font, fit, fmt, out chars, out lines);g.DrawString(text.Substring(ix, chars), font, brush, 0, spacing * line);++line;ix += chars;}//保存图newImage.Save(SavePath, ImageFormat.Jpeg);//释放资源g.Dispose();newImage.Dispose();}}}

关于设置行间距有一点要吐槽，vs提示说StringFormat可以设置行间距，但是翻遍了MSDN愣是没找到相关设置。被微软忽悠了一把。

微软支持自动换行，但是不能设置行间距，效果图

自定义行距效果图