C#绘制各种统计图的实现方法

using System;using System.Collections.Generic;using System.Linq;using System.Text;//using System.Drawing;//namespace DatePrint{ /// <summary> /// 根据统计数据，输出各种统计统计图形，包括饼状图、曲线分析图、柱形图、多组数据曲线分析图； /// 统计图形统一大小：600*420； /// 开发人员：###； /// 开发时间：###； /// </summary> public class CountImage { #region // 颜色，画框， /// <summary> /// 生成随机颜色 /// </summary> /// <returns></returns> private static Color GetRandomColor(int seed) { Random random = new Random(seed); int r = 0; int g = 0; int b = 0; r = random.Next(0, 230); g = random.Next(0, 230); b = random.Next(0, 235); Color randomcolor = Color.FromArgb(r, g, b); return randomcolor; } /// <summary> /// 绘制区域框，框何其阴影 /// </summary> /// <param name="image">图形</param> /// <param name="rect">矩形框对象</param> /// <returns>图形</returns> private static Bitmap DrawRectangle(Bitmap image,Rectangle rect) { Bitmap Image=image; Graphics g = Graphics.FromImage(Image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { Rectangle rn = new Rectangle(rect.X + 3, rect.Y + 3, rect.Width, rect.Height); SolidBrush brush1 = new SolidBrush(Color.FromArgb(233, 234, 249)); SolidBrush brush2 = new SolidBrush(Color.FromArgb(221, 213, 215)); // g.FillRectangle(brush2, rn); g.FillRectangle(brush1, rect); return Image; } finally { g.Dispose(); } } #endregion #region //绘制图例框，绘制扇形 /// <summary> /// 绘制图例信息 /// </summary> /// <param name="image">图像</param> /// <param name="rect">第一个矩形框</param> /// <param name="c">颜色</param> /// <param name="DesStr">图例说明文字</param> /// <param name="f">文字样式</param> /// <param name="i">图例说明序号</param> /// <returns>图形</returns> private static Bitmap DrawDes(Bitmap image, Rectangle rect,Color c,string DesStr,Font f,int i) { Bitmap Image = image; Graphics g = Graphics.FromImage(Image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { SolidBrush brush = new SolidBrush(c); // Rectangle R = new Rectangle(rect.X, rect.Y + 18 * i, rect.Width, rect.Height); Point p = new Point(rect.X + 12, rect.Y + 18 * i); //❀颜色矩形框 g.FillRectangle(brush,R); //文字说明 g.DrawString(DesStr, f, new SolidBrush(Color.Black), p); return Image; } finally { g.Dispose(); } } //绘制扇形 private static Bitmap DrawPie(Bitmap image, Rectangle rect, Color c, int Angle1, int Angle2) { Bitmap Image = image; Graphics g = Graphics.FromImage(Image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { SolidBrush brush = new SolidBrush(c); // Rectangle R = new Rectangle(rect.X, rect.Y, rect.Width, rect.Height); g.FillPie(brush, R, Angle1, Angle2); return Image; } finally { g.Dispose(); } } #endregion #region//绘制基本图形 /// <summary> /// 生成图片，统一设置图片大小、背景色,图片布局，及标题 /// </summary> /// <returns>图片</returns> private static Bitmap GenerateImage(string Title) { //图片大小：宽度、高度 int width = 600; int height = 420; //标题 Point PTitle=new Point(30,20); Font f1 = new Font("宋体", 10, FontStyle.Bold); //线 Point PLine1=new Point(20,40); Point PLine2=new Point(390,40); Pen pen = new Pen(new SolidBrush(Color.FromArgb(8,34,231)),1.5f); //主区域,主区域图形 Rectangle RMain1=new Rectangle(20,55,410,345); Rectangle RMain2=new Rectangle(25,60,400,335); //图例区域 Rectangle RDes1=new Rectangle(440,55,150,345); //图例说明 string Des="图例说明："; Font f2 = new Font("新宋体", 9, FontStyle.Bold); Point PDes=new Point(445,65); //图例信息，后面的x坐标上累加20 Rectangle RDes2=new Rectangle(445,90,10,10); Bitmap image = new Bitmap(width, height); // Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { //设置背景色、绘制边框 g.Clear(Color.White); g.DrawRectangle(new Pen(Color.Black), 0, 0, width - 1, height - 1); //绘制标题、线 g.DrawString(Title, f1, new SolidBrush(Color.Black),PTitle); g.DrawLine(pen, PLine1, PLine2); //主区域 image = DrawRectangle(image, RMain1); //图例区域 image = DrawRectangle(image, RDes1); //“图例说明” g.DrawString(Des, f2, new SolidBrush(Color.Black), PDes); //return return image; } finally { g.Dispose(); } } #endregion #region //绘制饼状图************************ /// <summary> /// 计算数值综合 /// </summary> /// <param name="Value"></param> /// <returns></returns> private static decimal Sum(decimal[] Value) { decimal t=0; foreach (decimal d in Value) { t += d; } return t; } /// <summary> /// 计算各项比例 /// </summary> /// <param name="Value"></param> /// <returns></returns> private static decimal[] GetItemRate(decimal[] Value) { decimal sum = Sum(Value); decimal[] ItemRate = new decimal[Value.Length]; for (int i = 0; i < Value.Length; i++) { ItemRate[i] = Value[i] / sum; } return ItemRate; } /// <summary> /// 根据比例，计算各项角度值 /// </summary> /// <param name="ItemRate"></param> /// <returns></returns> private static int[] GetItemAngle(decimal[] ItemRate) { int[] ItemAngel = new int[ItemRate.Length]; for (int i = 0; i < ItemRate.Length; i++) { decimal t=360*ItemRate[i]; ItemAngel[i] = Convert.ToInt32(t); } return ItemAngel; } /// <summary> /// 绘制饼图(主要是分析不同类型的数值所占比例)，参数有图的标题，项目名称，项目的数值，名称和数值都是长度对应的 /// </summary> /// <param name="Title">图的标题</param> /// <param name="ItemName">项目名称</param> /// <param name="ItemValue">项目的数值</param> /// <returns>Bitmap图形</returns> public static Bitmap GetPieImage(string Title, string[] ItemName, decimal[] ItemValue) { Bitmap image = GenerateImage(Title); // //主区域图形 Rectangle RMain = new Rectangle(35, 70, 380, 300); //图例信息 Rectangle RDes = new Rectangle(445, 90, 10, 10); Font f = new Font("新宋体", 9, FontStyle.Bold); Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { //分析数据，绘制饼图和图例说明 decimal[] ItemRate = GetItemRate(ItemValue); int[] ItemAngle = GetItemAngle(ItemRate); int Angle1 = 0; int Angle2 = 0; int len = ItemValue.Length; Color c = new Color(); //3D g.DrawPie(new Pen(Color.Black), RMain, 0F, 360F); g.DrawPie(new Pen(Color.Black), new Rectangle(RMain.X, RMain.Y + 10, RMain.Width, RMain.Height), 0F, 360F); g.FillPie(new SolidBrush (Color.Black), new Rectangle(RMain.X, RMain.Y + 10, RMain.Width, RMain.Height), 0F, 360F); //绘制 for (int i = 0; i < len; i++) { Angle2 = ItemAngle[i]; //if (c != GetRandomColor(i)) c = GetRandomColor(i); SolidBrush brush=new SolidBrush(c); string DesStr=ItemName[i]+"("+(ItemRate[i]*100).ToString(".00")+"%"+")"+ItemValue[i].ToString(".00"); // DrawPie(image, RMain, c, Angle1, Angle2); Angle1 += Angle2; DrawDes(image, RDes, c, DesStr, f, i); } return image; } finally { g.Dispose(); } } #endregion #region //获取Y轴坐标数据 /* 坐标轴实现算法描述： * X轴坐标根据项目数量把X轴均等分，有效长度350， * Y轴有效长度280，平分为10个等分，即有十个点； * Y轴的数值算法：第一个点位最小值，然后每个等分所对应的值是（最大值-最小值）/9， */ /// <summary> /// 获取Y轴坐标的点分布值 /// </summary> /// <param name="ItemValue">项目数值</param> /// <param name="YCount">Y轴点的数量</param> /// <returns>图形</returns> private static int[] GetYValue(decimal[] ItemValue,int YCount) { int len = ItemValue.Length; int[] Value = new int[YCount]; int Max = Convert.ToInt32(ItemValue.Max()); int Min = Convert.ToInt32(ItemValue.Min()); int Distance = Convert.ToInt32((Max-Min)/(YCount-1)); for (int i = 0; i < YCount; i++) { Value[i] = Min + Distance * i; } //Value[YCount - 1] = Max; return Value; } #endregion #region //建立坐标轴 /// <summary> /// 绘制坐标轴，X、Y轴的坐标值 /// </summary> /// <param name="image">图像</param> /// <param name="ItemName">项目名称</param> /// <param name="ItemValue">项目数值</param> /// <returns>图像</returns> private static Bitmap DrawCoordinate(Bitmap image,string[] ItemName, decimal[] ItemValue) { //坐标轴 Point P0 = new Point(60, 360); Point Px = new Point(420, 360); Point Py = new Point(60, 65); Pen pen=new Pen(Color.Black); //箭头 Point Py1=new Point(58,70); Point Py2=new Point(62,70); Point Px1=new Point(415,358); Point Px2=new Point(415,362); //Y,X Value //y 280-10 int YCount = 10;//Y轴点的数量 int YDistance = Convert.ToInt32(280/YCount) ;//Y轴点击的距离 int[] YValue = GetYValue(ItemValue, YCount); int len = 3;//短线的长度 int XCount = ItemName.Length;//X轴点的数量 int XDistance = Convert.ToInt32(350/XCount);//X轴点间的距离 // Font f = new Font("新宋体", 8, FontStyle.Bold); //Image Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { //绘制坐标轴线 g.DrawLine(pen, P0, Px); g.DrawLine(pen, P0, Py); //箭头 g.DrawLine(pen, Py, Py1); g.DrawLine(pen, Py, Py2); g.DrawLine(pen, Px, Px1); g.DrawLine(pen, Px, Px2); //X for (int i = 1; i <= XCount; i++) { Point pl1 = new Point(P0.X+i*XDistance,P0.Y); Point pl2 = new Point(P0.X + i * XDistance, P0.Y - len); string str=ItemName[i - 1]; Point ps = new Point(pl1.X-(str.Length*8),pl1.Y+5); g.DrawLine(pen, pl1, pl2); g.DrawString(str, f, new SolidBrush(Color.Black), ps); } //Y for (int i = 1; i <= YCount; i++) { Point pl1 = new Point(P0.X, P0.Y-YDistance*i); Point pl2 = new Point(pl1.X+len, pl1.Y); string str=YValue[i-1].ToString(); Point ps = new Point(pl1.X - str.Length*8, pl1.Y - 5); g.DrawLine(pen, pl1, pl2); g.DrawString(str, f, new SolidBrush(Color.Black), ps); } //0 g.DrawString("0",f,new SolidBrush(Color.Black),new Point(P0.X-10,P0.Y-10)); //return return image; } finally { g.Dispose(); } } #endregion #region //获取某个数值在坐标系中的位置 /// <summary> /// 获取某个数值在坐标系中的位置 /// </summary> /// <param name="Value">当前数值</param> /// <param name="ItemValue">所有数值</param> /// <returns>位置</returns> private static int GetCoordinateValue(decimal Value,decimal[] ItemValue) { //y 280-10 //get y value int[] YValue=GetYValue(ItemValue,10); int Max = YValue.Max(); int Min = YValue.Min(); float AvgDis = (Max - Min) / 9; float tt = (Convert.ToSingle(Value) - Min) / AvgDis; int m = Convert.ToInt32(tt*28); m = 360 - 28 - m; //if((Convert.ToInt32(Value)) >= Max) // m=80; //else if (Convert.ToInt32(Value) <= Min) // m=332; return m; } #endregion #region //绘制曲线图**************************** /// <summary> /// 绘制曲线图(主要是分析不同类型的数值所占比例，或者同意项目不同状态下的值和趋势)，参数有图的标题，项目名称，项目的数值，名称和数值都是长度对应的 /// </summary> /// <param name="Title">图的标题</param> /// <param name="ItemName">项目名称</param> /// <param name="ItemValue">项目的数值</param> /// <returns>Bitmap图形</returns> public static Bitmap GetLineImage(string Title, string[] ItemName, decimal[] ItemValue) { Bitmap image = GenerateImage(Title); image = DrawCoordinate(image, ItemName, ItemValue); Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { int PNum = ItemName.Length; Point[] Pts = new Point[PNum]; //坐标轴 Point P0 = new Point(60, 360); Point Px = new Point(420, 360); Point Py = new Point(60, 65); Pen pen = new Pen(Color.Black); // int XCount = ItemName.Length;//X轴点的数量 int XDistance = Convert.ToInt32(350 / XCount);//X轴点间的距离 //图例 Rectangle RDes = new Rectangle(445, 90, 10, 10); Font f = new Font("新宋体", 9, FontStyle.Bold); // for (int i = 0; i < PNum; i++) { int x=P0.X + (i+1) * XDistance; int y = GetCoordinateValue(ItemValue[i], ItemValue); Pts[i] = new Point(x, y); } //把点连起来 for (int i = 1; i < PNum; i++) { g.DrawLine(pen, Pts[i - 1], Pts[i]); } //画图例说明 Color c = GetRandomColor(3); for (int i = 0; i < PNum; i++) { string str = ItemName[i] + ":" + ItemValue[i].ToString(); DrawDes(image, RDes, c, str, f, i); } //return return image; } finally { g.Dispose(); } } #endregion #region //绘制柱状图********************* /// <summary> /// 绘制柱状图(主要是分析某一个项目在不同状态下的值，获取其发展趋势)，参数有图的标题，项目名称，项目的数值，名称和数值都是长度对应的 /// </summary> /// <param name="Title">图的标题</param> /// <param name="ItemName">项目名称</param> /// <param name="ItemValue">项目的数值</param> /// <returns>Bitmap图形</returns> public static Bitmap GetColumnImage(string Title, string[] ItemName, decimal[] ItemValue) { Bitmap image = GenerateImage(Title); DrawCoordinate(image,ItemName,ItemValue); Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { int PNum = ItemName.Length; Point[] Pts = new Point[PNum]; //坐标轴 Point P0 = new Point(60, 360); Point Px = new Point(420, 360); Point Py = new Point(60, 65); Pen pen = new Pen(Color.Black); // int XCount = ItemName.Length;//X轴点的数量 int XDistance = Convert.ToInt32(350 / XCount);//X轴点间的距离 //图例 Rectangle RDes = new Rectangle(445, 90, 10, 10); Font f = new Font("新宋体", 9, FontStyle.Bold); //获取值所对应的点 for (int i = 0; i < PNum; i++) { int x = P0.X + (i + 1) * XDistance; int y = GetCoordinateValue(ItemValue[i], ItemValue); Pts[i] = new Point(x, y); } //绘制条形框图 Color c=GetRandomColor(0); for (int i = 0; i < PNum; i++) { Rectangle rect = new Rectangle(Pts[i].X - 5, Pts[i].Y, 10, P0.Y - Pts[i].Y); Font ff = new Font("新宋体", 8, FontStyle.Regular); g.DrawString(ItemValue[i].ToString(".00"), f, new SolidBrush(Color.Black), new Point(Pts[i].X - 15, Pts[i].Y - 12)); g.DrawRectangle(new Pen(Color.Black), rect); g.FillRectangle(new SolidBrush(c), rect); } //画图例说明 for (int i = 0; i < PNum; i++) { string str = ItemName[i] + ":" + ItemValue[i].ToString(); DrawDes(image, RDes, c, str, f, i); } //return return image; } finally { g.Dispose(); } } #endregion #region //绘制多组数据曲线图******************** /// <summary> /// 获取二维数组中的最大值 /// </summary> /// <param name="ItemValues"></param> /// <returns></returns> private static int GetMax(decimal[][] ItemValues) { int Max = 0; for (int i = 0; i < ItemValues.Length; i++) { int t = Convert.ToInt32(ItemValues[i].Max()); if (i == 0) Max = t; if (Max <= t) Max = t; } return Max; } /// <summary> /// 获取二维数组中的最小值 /// </summary> /// <param name="ItemValues"></param> /// <returns></returns> private static int GetMin(decimal[][] ItemValues) { int Min = 0; for (int i = 0; i < ItemValues.Length; i++) { int t = Convert.ToInt32(ItemValues[i].Min()); if (i == 0) Min = t; if (Min >= t) Min = t; } return Min; } /// <summary> /// 获取Y轴上点的数值 /// </summary> /// <param name="ItemValues"></param> /// <param name="YCount"></param> /// <returns></returns> private static int[] GetYValue(decimal[][] ItemValues, int YCount) { int[] Value = new int[YCount]; int Max = GetMax(ItemValues); int Min = GetMin(ItemValues); int Distance = Convert.ToInt32((Max - Min) / (YCount - 1)); for (int i = 0; i < YCount; i++) { Value[i] = Min + Distance * i; } //Value[YCount - 1] = Max; return Value; } /// <summary> /// 获取某个数值在坐标系中的位置 /// </summary> /// <param name="Value">当前数值</param> /// <param name="ItemValue">所有数值</param> /// <returns>位置</returns> private static int GetCoordinateValue(decimal Value, decimal[][] ItemValues) { //y 280-10 //get y value int[] YValue = GetYValue(ItemValues, 10); int Max = GetMax(ItemValues); int Min = GetMin(ItemValues); float AvgDis = (Max - Min) / 9; float tt = (Convert.ToSingle(Value) - Min) / AvgDis; int m = Convert.ToInt32(tt * 28); m = 360 - 28 - m; return m; } /// <summary> /// 绘制坐标轴，X、Y轴的坐标值 /// </summary> /// <param name="image">图像</param> /// <param name="ItemName">项目名称</param> /// <param name="ItemValue">多组项目数值</param> /// <returns>图像</returns> private static Bitmap DrawCoordinate(Bitmap image,string[] ItemName, decimal[][] ItemValues) { //坐标轴 Point P0 = new Point(60, 360); Point Px = new Point(420, 360); Point Py = new Point(60, 65); Pen pen=new Pen(Color.Black); //箭头 Point Py1=new Point(58,70); Point Py2=new Point(62,70); Point Px1=new Point(415,358); Point Px2=new Point(415,362); //Y,X Value //y 280-10 int YCount = 10;//Y轴点的数量 int YDistance = Convert.ToInt32(280/YCount) ;//Y轴点击的距离 int[] YValue = GetYValue(ItemValues, YCount); int len = 3;//短线的长度 int XCount = ItemName.Length;//X轴点的数量 int XDistance = Convert.ToInt32(350/XCount);//X轴点间的距离 // Font f = new Font("新宋体", 8, FontStyle.Bold); //Image Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { //绘制坐标轴线 g.DrawLine(pen, P0, Px); g.DrawLine(pen, P0, Py); //箭头 g.DrawLine(pen, Py, Py1); g.DrawLine(pen, Py, Py2); g.DrawLine(pen, Px, Px1); g.DrawLine(pen, Px, Px2); //X for (int i = 1; i <= XCount; i++) { Point pl1 = new Point(P0.X+i*XDistance,P0.Y); Point pl2 = new Point(P0.X + i * XDistance, P0.Y - len); string str=ItemName[i - 1]; Point ps = new Point(pl1.X-(str.Length*8),pl1.Y+5); g.DrawLine(pen, pl1, pl2); g.DrawString(str, f, new SolidBrush(Color.Black), ps); } //Y for (int i = 1; i <= YCount; i++) { Point pl1 = new Point(P0.X, P0.Y-YDistance*i); Point pl2 = new Point(pl1.X+len, pl1.Y); string str=YValue[i-1].ToString(); Point ps = new Point(pl1.X - str.Length*8, pl1.Y - 5); g.DrawLine(pen, pl1, pl2); g.DrawString(str, f, new SolidBrush(Color.Black), ps); } //0 g.DrawString("0",f,new SolidBrush(Color.Black),new Point(P0.X-10,P0.Y-10)); //return return image; } finally { g.Dispose(); } } /// <summary> /// 绘制多组数据的曲线图 /// </summary> /// <param name="Title">主标题</param> /// <param name="ItemName">数据项名称</param> /// <param name="ItemValues">多组数据集合</param> /// <param name="ItemsName">各组的名称</param> /// <returns></returns> public static Bitmap GetMulLineImage(string Title, string[] ItemName, decimal[][] ItemValues,string[] ItemsName) { Bitmap image = GenerateImage(Title); image = DrawCoordinate(image, ItemName, ItemValues); Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { //绘制多条线 for (int m = 0; m < ItemsName.Length; m++) { int PNum = ItemName.Length; Point[] Pts = new Point[PNum]; //坐标轴 Point P0 = new Point(60, 360); Point Px = new Point(420, 360); Point Py = new Point(60, 65); //color Color c = GetRandomColor(m); Pen pen = new Pen(c); // int XCount = ItemName.Length;//X轴点的数量 int XDistance = Convert.ToInt32(350 / XCount);//X轴点间的距离 //图例 Rectangle RDes = new Rectangle(445, 90, 10, 10); Font f = new Font("新宋体", 9, FontStyle.Bold); // for (int i = 0; i < PNum; i++) { int x = P0.X + (i + 1) * XDistance; int y = GetCoordinateValue(ItemValues[m][i], ItemValues); Pts[i] = new Point(x, y); } //把点连起来 for (int i = 1; i < PNum; i++) { g.DrawLine(pen, Pts[i - 1], Pts[i]); } //画图例说明 DrawDes(image, RDes, c, ItemsName[m], f, m); } //return return image; } finally { g.Dispose(); } }#endregion //end }}

 

条形码的实现代码：

using System;using System.Collections.Generic;using System.Linq;using System.Text;//using System.Drawing;using System.Collections;//namespace DatePrint{ /// <summary> /// 生成条形码图形、条形码代码字符，条形码打印等处理的类； /// 开发人员：###； /// 开发时间：####； /// </summary> public class BarCode { /* * 编码规则： 39码总共可表示的字符范围包含有：0~9的数字，A~Z的英文字母，以及“＋”、“－”、“＊”、“／”、“％”、“＄”、“．” 等特殊符号，再加上空格符“ ”，共计44组编码，每一个字符编码都是按照5条四空，其中有3个宽单元，即藉由九条不同排列的线条编码而得。 * 可分为四类：　 粗黑线：11　 细黑线：1　 粗白线：00　 细白线：0　 而且规范中的规定了每个字符所对应的编码对应表，所以生成条码实质上只是根据每个字符的编码画出宽度不同的线而已。 */ public static int WidthL3 = 3; //粗线和宽间隙宽度 public static int WidthL1 = 1; //细线和窄间隙宽度 public static int LineX = 10; //条码起始坐标 public static int LineHeight = 75; //画布大小定义 private static int Height = 100; private static int Width = 20; #region code39 private static String alphabet39 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*"; private static String[] coded39Char = {/* 0 */ "000110100", /* 1 */ "100100001", /* 2 */ "001100001", /* 3 */ "101100000",/* 4 */ "000110001", /* 5 */ "100110000", /* 6 */ "001110000", /* 7 */ "000100101",/* 8 */ "100100100", /* 9 */ "001100100", /* A */ "100001001", /* B */ "001001001",/* C */ "101001000", /* D */ "000011001", /* E */ "100011000", /* F */ "001011000",/* G */ "000001101", /* H */ "100001100", /* I */ "001001100", /* J */ "000011100",/* K */ "100000011", /* L */ "001000011", /* M */ "101000010", /* N */ "000010011",/* O */ "100010010", /* P */ "001010010", /* Q */ "000000111", /* R */ "100000110",/* S */ "001000110", /* T */ "000010110", /* U */ "110000001", /* V */ "011000001",/* W */ "111000000", /* X */ "010010001", /* Y */ "110010000", /* Z */ "011010000",/* - */ "010000101", /* . */ "110000100", /*' '*/ "011000100",/* $ */ "010101000",/* / */ "010100010", /* + */ "010001010", /* % */ "000101010", /* * */ "010010100" }; #endregion /// <summary> /// 对输入字符进行Code39编码 /// </summary> /// <param name="Code">要编码的字符串</param> /// <returns>编码后的字符串</returns> private static string Encode39(string Code) { Code = Code.ToUpper(); //标准化输入字符，增加起始标记 if (Code.Substring(0,1) != "*") { Code = "*" + Code; } if (Code.Substring(Code.Length-1,1)!="*") { Code = Code + "*"; } //转换成39编码 string Code39=""; for (int i = 0; i < Code.Length; i++) { Code39 = Code39 + coded39Char[alphabet39.IndexOf(Code[i])].ToString(); } return Code39; } /// <summary> /// 动态设置图片的宽度，根据数输入字符的长度 /// </summary> /// <param name="Code39">编码后的字符串</param> /// <returns>图片宽度</returns> private static int GetBarCodeWidth(string Code39) { int w=LineX*2; for (int i = 0; i < Code39.Length; i++) { int sw = 0; //0 if (Code39[i].ToString() == "0") { sw = WidthL1; } //1 else { sw = WidthL3; } w += sw; } return w; } /// <summary> /// 获取条形码图片，字符串要求："0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*"； /// 不能有其他的非法字符，暂时没有做相关的错误处理； /// 如果有非法字符，程序会报错 /// </summary> /// <param name="Code">要生产条形码图标的字符串</param> /// <returns>条形码图片</returns> public static Bitmap GetDrawBarImage(string Code) { string code39 = Encode39(Code); //设置宽度 Width = GetBarCodeWidth(code39); Code = Code.ToUpper(); //generate image graphics Bitmap image = new Bitmap(Width, Height); Graphics g = Graphics.FromImage(image); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; try { g.Clear(Color.White); //style 样式 Pen penB = new Pen(Color.Black); Pen penW = new Pen(Color.White); Font f = new Font("ARial", 9); //画线 int CL = LineX; for (int i = 0; i < code39.Length; i++) { int sw = 0; //0 if (code39[i].ToString() == "0") { sw = WidthL1; } //1 else { sw = WidthL3; } Rectangle rect = new Rectangle(CL, 5, sw, LineHeight); g.FillRectangle(i % 2 == 0 ? new SolidBrush(Color.Black) : new SolidBrush(Color.White), rect); CL += sw; } //绘制标题 Point p = new Point(Width/2 - Convert.ToInt32( Code.Length * 4.5), Height - 18); g.DrawString(Code, f, new SolidBrush(Color.Black), p); //return return image; } finally { g.Dispose(); } } }}

 

实现效果图如下所示：

1：

2：

3：

4：：

5：

6：