在网上看到一些人写关于条形码的代码都很长,有的甚至拿来卖,所以查了下资料,希望能对大家有帮助。
我的实现原理是:
其实Windows本身就有一个字体是用来显示条形码的。
只要将数字改为这种字体就变成了条形码。
windows字体库下,有如下八种字体可以用来将数字转换成条形码:
Code39AzaleaNarrow1 Code39AzaleaNarrow2 Code39AzaleaNarrow3 Code39AzaleaRegular1 Code39AzaleaRegular2 Code39AzaleaWide1 Code39AzaleaWide2 Code39AzaleaWide3
把代码贴给大家参考:
Bitmap b=new Bitmap(200,200); Graphics g = Graphics.FromImage(b); Font font = new Font("Code39AzaleaRegular2", 32); g.DrawString("123456", font, Brushes.Black, new PointF(100,100)); pictureBox1.BackgroundImage = b; pictureBox1.BackgroundImageLayout = ImageLayout.Zoom。
是不是很简单呢,亲们,思路给大家了,具体使用到项目中的时候,小伙伴们自己扩展下就可以了。
另附上一则示例中的应用
using System; using System.Collections.Generic; using System.Web; using System.Drawing; using System.Drawing.Imaging; using System.Drawing.Drawing2D; using System.Drawing.Text; using System.Drawing.Design; using System.IO; using System.Collections; namespace Public.Equipment { /// <summary> ///绘制条形码 /// </summary> public class DrawingBarCode { public DrawingBarCode() { // //TODO: 在此处添加构造函数逻辑 // } #region 根据字体产生条形码 /// <summary> /// 根据条形码绘制图片 /// </summary> /// <param name="strNumber">条形码</param> public void DrawingBarCode(string strNumber) { PrivateFontCollection fonts = new PrivateFontCollection(); //39带数字 //fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/V100010_.TTF"); //FontFamily ff = new FontFamily("C39HrP48DlTt", fonts); //39码 strNumber = "*" + strNumber + "*"; fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/FREE3OF9X.TTF"); FontFamily ff = new FontFamily("Free 3 of 9 Extended", fonts); //接近条形码 //fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/V100014_.TTF"); //FontFamily ff = new FontFamily("C39P24DlTt", fonts); Font font = new Font(ff, 12); //设置图片大小 Image img = new Bitmap(1, 1); Graphics g = Graphics.FromImage(img); SizeF fontSize = g.MeasureString(strNumber, font); int intWidth = Convert.ToInt32(fontSize.Width); int intHeight = Convert.ToInt32(fontSize.Height); g.Dispose(); img.Dispose(); img = new Bitmap(intWidth, intHeight); g = Graphics.FromImage(img); g.Clear(Color.White); g.CompositingQuality = CompositingQuality.HighQuality; g.SmoothingMode = SmoothingMode.HighQuality; g.DrawString(strNumber, font, Brushes.Black, 0, 0); MemoryStream stream = new MemoryStream(); img.Save(stream, ImageFormat.Jpeg); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.ContentType = "image/Jpeg"; HttpContext.Current.Response.BinaryWrite(stream.ToArray()); g.Dispose(); img.Dispose(); } /// <summary> /// 根据条形码绘制图片 /// </summary> /// <param name="strNumber">条形码</param> /// <param name="intFontSize">字体大小</param> public void DrawingBarCode(string strNumber,int intFontSize) { PrivateFontCollection fonts = new PrivateFontCollection(); //39带数字 //fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/V100010_.TTF"); //FontFamily ff = new FontFamily("C39HrP48DlTt", fonts); //39码 strNumber = "*" + strNumber + "*"; fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/FREE3OF9X.TTF"); FontFamily ff = new FontFamily("Free 3 of 9 Extended", fonts); //接近条形码 //fonts.AddFontFile(HttpContext.Current.Server.MapPath(".") + "/BarCodeFonts/V100014_.TTF"); //FontFamily ff = new FontFamily("C39P24DlTt", fonts); Font font = new Font(ff, intFontSize); //设置图片大小 Image img = new Bitmap(1, 1); Graphics g = Graphics.FromImage(img); SizeF fontSize = g.MeasureString(strNumber, font); int intWidth = Convert.ToInt32(fontSize.Width); int intHeight = Convert.ToInt32(fontSize.Height); g.Dispose(); img.Dispose(); img = new Bitmap(intWidth, intHeight); g = Graphics.FromImage(img); g.Clear(Color.White); g.CompositingQuality = CompositingQuality.HighQuality; g.SmoothingMode = SmoothingMode.HighQuality; g.DrawString(strNumber, font, Brushes.Black, 0, 0); MemoryStream stream = new MemoryStream(); img.Save(stream, ImageFormat.Jpeg); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.ContentType = "image/Jpeg"; HttpContext.Current.Response.BinaryWrite(stream.ToArray()); g.Dispose(); img.Dispose(); } #endregion #region 绘制Code39码 /// <summary> /// 根据条形码绘制图片 /// </summary> /// <param name="strNumber">条形码</param> public void DrawingBarCode39(string strNumber,int intFontSize,bool WithStart) { ViewFont = new Font("宋体", intFontSize); Image img = GetCodeImage(strNumber, Code39Model.Code39Normal, WithStart); MemoryStream stream = new MemoryStream(); img.Save(stream, ImageFormat.Jpeg); HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.BufferOutput = true; HttpContext.Current.Response.ContentType = "image/Jpeg"; HttpContext.Current.Response.BinaryWrite(stream.GetBuffer()); HttpContext.Current.Response.Flush(); } private Hashtable m_Code39 = new Hashtable(); private byte m_Magnify = 0; /// <summary> /// 放大倍数 /// </summary> public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } } private int m_Height = 40; /// <summary> /// 图形高 /// </summary> public int Height { get { return m_Height; } set { m_Height = value; } } private Font m_ViewFont = null; /// <summary> /// 字体大小 /// </summary> public Font ViewFont { get { return m_ViewFont; } set { m_ViewFont = value; } } /** Code39码的编码规则是: 1、 每五条线表示一个字符; 2、 粗线表示1,细线表示0; 3、 线条间的间隙宽的表示1,窄的表示0; 4、 五条线加上它们之间的四条间隙就是九位二进制编码,而且这九位中必定有三位是1,所以称为39码; 5、 条形码的首尾各一个*标识开始和结束 */ public DrawingBarCode(Boolean IsCode39) { m_Code39.Add("A", "1101010010110"); m_Code39.Add("B", "1011010010110"); m_Code39.Add("C", "1101101001010"); m_Code39.Add("D", "1010110010110"); m_Code39.Add("E", "1101011001010"); m_Code39.Add("F", "1011011001010"); m_Code39.Add("G", "1010100110110"); m_Code39.Add("H", "1101010011010"); m_Code39.Add("I", "1011010011010"); m_Code39.Add("J", "1010110011010"); m_Code39.Add("K", "1101010100110"); m_Code39.Add("L", "1011010100110"); m_Code39.Add("M", "1101101010010"); m_Code39.Add("N", "1010110100110"); m_Code39.Add("O", "1101011010010"); m_Code39.Add("P", "1011011010010"); m_Code39.Add("Q", "1010101100110"); m_Code39.Add("R", "1101010110010"); m_Code39.Add("S", "1011010110010"); m_Code39.Add("T", "1010110110010"); m_Code39.Add("U", "1100101010110"); m_Code39.Add("V", "1001101010110"); m_Code39.Add("W", "1100110101010"); m_Code39.Add("X", "1001011010110"); m_Code39.Add("Y", "1100101101010"); m_Code39.Add("Z", "1001101101010"); m_Code39.Add("0", "1010011011010"); m_Code39.Add("1", "1101001010110"); m_Code39.Add("2", "1011001010110"); m_Code39.Add("3", "1101100101010"); m_Code39.Add("4", "1010011010110"); m_Code39.Add("5", "1101001101010"); m_Code39.Add("6", "1011001101010"); m_Code39.Add("7", "1010010110110"); m_Code39.Add("8", "1101001011010"); m_Code39.Add("9", "1011001011010"); m_Code39.Add("+", "1001010010010"); m_Code39.Add("-", "1001010110110"); m_Code39.Add("*", "1001011011010"); m_Code39.Add("/", "1001001010010"); m_Code39.Add("%", "1010010010010"); m_Code39.Add("$", "1001001001010"); m_Code39.Add(".", "1100101011010"); m_Code39.Add(" ", "1001101011010"); } public enum Code39Model { /// <summary> /// 基本类别 1234567890ABC /// </summary> Code39Normal, /// <summary> /// 全ASCII方式 +A+B 来表示小写 /// </summary> Code39FullAscII } /// <summary> /// 获得条码图形 /// </summary> /// <param name="p_Text">文字信息</param> /// <param name="p_Model">类别</param> /// <param name="p_StarChar">是否增加前后*号</param> /// <returns>图形</returns> public Bitmap GetCodeImage(string p_Text, Code39Model p_Model, bool p_StarChar) { string _ValueText = ""; string _CodeText = ""; char[] _ValueChar = null; switch (p_Model) { case Code39Model.Code39Normal: _ValueText = p_Text.ToUpper(); break; default: _ValueChar = p_Text.ToCharArray(); for (int i = 0; i != _ValueChar.Length; i++) { if ((int)_ValueChar[i] >= 97 && (int)_ValueChar[i] <= 122) { _ValueText += "+" + _ValueChar[i].ToString().ToUpper(); } else { _ValueText += _ValueChar[i].ToString(); } } break; } _ValueChar = _ValueText.ToCharArray(); if (p_StarChar == true) _CodeText += m_Code39["*"]; for (int i = 0; i != _ValueChar.Length; i++) { if (p_StarChar == true && _ValueChar[i] == '*') throw new Exception("带有起始符号不能出现*"); object _CharCode = m_Code39[_ValueChar[i].ToString()]; if (_CharCode == null) throw new Exception("不可用的字符" + _ValueChar[i].ToString()); _CodeText += _CharCode.ToString(); } if (p_StarChar == true) _CodeText += m_Code39["*"]; Bitmap _CodeBmp = GetImage(_CodeText); GetViewImage(_CodeBmp, p_Text); return _CodeBmp; } /// <summary> /// 绘制编码图形 /// </summary> /// <param name="p_Text">编码</param> /// <returns>图形</returns> private Bitmap GetImage(string p_Text) { char[] _Value = p_Text.ToCharArray(); //宽 == 需要绘制的数量*放大倍数 + 两个字的宽 Bitmap _CodeImage = new Bitmap(_Value.Length * ((int)m_Magnify + 1), (int)m_Height); Graphics _Garphics = Graphics.FromImage(_CodeImage); _Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height)); int _LenEx = 0; for (int i = 0; i != _Value.Length; i++) { int _DrawWidth = m_Magnify + 1; if (_Value[i] == '1') { _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, _DrawWidth, m_Height)); } else { _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, _DrawWidth, m_Height)); } _LenEx += _DrawWidth; } _Garphics.Dispose(); return _CodeImage; } /// <summary> /// 绘制文字,文字宽度大于图片宽度将不显示 /// </summary> /// <param name="p_CodeImage">图形</param> /// <param name="p_Text">文字</param> private void GetViewImage(Bitmap p_CodeImage, string p_Text) { if (m_ViewFont == null) return; Graphics _Graphics = Graphics.FromImage(p_CodeImage); SizeF _FontSize = _Graphics.MeasureString(p_Text, m_ViewFont); if (_FontSize.Width > p_CodeImage.Width || _FontSize.Height > p_CodeImage.Height - 20) { _Graphics.Dispose(); return; } int _StarHeight = p_CodeImage.Height - (int)_FontSize.Height; _Graphics.FillRectangle(Brushes.White, new Rectangle(0, _StarHeight, p_CodeImage.Width, (int)_FontSize.Height)); int _StarWidth = (p_CodeImage.Width - (int)_FontSize.Width) / 2; _Graphics.DrawString(p_Text, m_ViewFont, Brushes.Black, _StarWidth, _StarHeight); _Graphics.Dispose(); } #endregion } }
本文向大家介绍C#生成条形码图片的简单方法,包括了C#生成条形码图片的简单方法的使用技巧和注意事项,需要的朋友参考一下 本文实例讲述了C#生成条形码图片的简单方法。分享给大家供大家参考。具体实现方法如下: 实现原理: 其实Windows本身就有一个字体是用来显示条形码的。 只要将数字改为这种字体就变成了条形码。 windows字体库下,有如下八种字体可以用来将数字转换成条形码: Code39Aza
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