类别:程序开发
日期:2020-12-03 浏览:2029 评论:0
ASP.net(c#)生成条形码的源码如下:(仅供参考) 由于公司经常要用到条形码打印,在网上搜了好久,发现了几个在线条码打印机生成的例子
例一:
using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load( object sender, EventArgs e) { Response.Write(bar_code(www.saibon.com.cn, 100, 1, 2)); } public string bar_code( object str, int ch, int cw, int type_code) { // str:输入的字符串;ch:要显示条形码的高度;cw:要显示条码的宽度;type_code:代码类型 string strTmp = str.ToString(); string code = strTmp; // ToLower()将string转化成小写形式的副本,返回是使用指定区域的性的大小写规则。 strTmp = strTmp.ToLower(); int height = ch; int width = cw; // 将传入的参数进行转化。 strTmp = strTmp.Replace( " 0 ", " _|_|__||_||_| "); ; strTmp = strTmp.Replace( " 1 ", " _||_|__|_|_|| "); strTmp = strTmp.Replace( " 2 ", " _|_||__|_|_|| "); strTmp = strTmp.Replace( " 3 ", " _||_||__|_|_| "); strTmp = strTmp.Replace( " 4 ", " _|_|__||_|_|| "); strTmp = strTmp.Replace( " 5 ", " _||_|__||_|_| "); strTmp = strTmp.Replace( " 7 ", " _|_|__|_||_|| "); strTmp = strTmp.Replace( " 6 ", " _|_||__||_|_| "); strTmp = strTmp.Replace( " 8 ", " _||_|__|_||_| "); strTmp = strTmp.Replace( " 9 ", " _|_||__|_||_| "); strTmp = strTmp.Replace( " a ", " _||_|_|__|_|| "); strTmp = strTmp.Replace( " b ", " _|_||_|__|_|| "); strTmp = strTmp.Replace( " c ", " _||_||_|__|_| "); strTmp = strTmp.Replace( " d ", " _|_|_||__|_|| "); strTmp = strTmp.Replace( " e ", " _||_|_||__|_| "); strTmp = strTmp.Replace( " f ", " _|_||_||__|_| "); strTmp = strTmp.Replace( " g ", " _|_|_|__||_|| "); strTmp = strTmp.Replace( " h ", " _||_|_|__||_| "); strTmp = strTmp.Replace( " i ", " _|_||_|__||_| "); strTmp = strTmp.Replace( " j ", " _|_|_||__||_| "); strTmp = strTmp.Replace( " k ", " _||_|_|_|__|| "); strTmp = strTmp.Replace( " l ", " _|_||_|_|__|| "); strTmp = strTmp.Replace( " m ", " _||_||_|_|__| "); strTmp = strTmp.Replace( " n ", " _|_|_||_|__|| "); strTmp = strTmp.Replace( " o ", " _||_|_||_|__| "); strTmp = strTmp.Replace( " p ", " _|_||_||_|__| "); strTmp = strTmp.Replace( " r ", " _||_|_|_||__| "); strTmp = strTmp.Replace( " q ", " _|_|_|_||__|| "); strTmp = strTmp.Replace( " s ", " _|_||_|_||__| "); strTmp = strTmp.Replace( " t ", " _|_|_||_||__| "); strTmp = strTmp.Replace( " u ", " _||__|_|_|_|| "); strTmp = strTmp.Replace( " v ", " _|__||_|_|_|| "); strTmp = strTmp.Replace( " w ", " _||__||_|_|_| "); strTmp = strTmp.Replace( " x ", " _|__|_||_|_|| "); strTmp = strTmp.Replace( " y ", " _||__|_||_|_| "); strTmp = strTmp.Replace( " z ", " _|__||_||_|_| "); strTmp = strTmp.Replace( " - ", " _|__|_|_||_|| "); strTmp = strTmp.Replace( " * ", " _|__|_||_||_| "); strTmp = strTmp.Replace( " / ", " _|__|__|_|__| "); strTmp = strTmp.Replace( " % ", " _|_|__|__|__| "); strTmp = strTmp.Replace( " + ", " _|__|_|__|__| "); strTmp = strTmp.Replace( " . ", " _||__|_|_||_| "); strTmp = strTmp.Replace( " _ ", " <span style='height: " + height + " ;width: " + width + " ;background:#FFFFFF;'></span> "); strTmp = strTmp.Replace( " | ", " <span style='height: " + height + " ;width: " + width + " ;background:#000000;'></span> "); if (type_code == 1) { return strTmp + " <BR> " + code; } else { return strTmp; } } }
例二:
using System.Drawing; public void CreateCodeLogo( string code) { long len = code.Length; string lastString = ""; char[] list = new char[len + 1]; list = code.ToCharArray(); for ( int i = 0; i < list.Length; i++) { lastString += this.ConvertToBinaryString(list[i].ToString()); } char[] numList = new char[lastString.Length + 1]; numList = lastString.ToCharArray(); Bitmap image = new Bitmap( 200, 140); Graphics g = Graphics.FromImage(image); g.Clear(Color.White); Pen penBlack = new Pen(Color.FromArgb( 255, 0, 0, 0), 2.5F); Pen penWhite = new Pen(Color.White, 2.5F); int j = 0; for ( float k = 10; j < numList.Length; k += 2F, j++) { if (numList[j].ToString() == " 1 ") { g.DrawLine(penBlack, k, 10, k, 110); } else { g.DrawLine(penWhite, k, 10, k, 110); } if (j % 4 == 0) { g.DrawString(list[j / 4].ToString(), new System.Drawing.Font( " Courier New ", 12), new SolidBrush(Color.Red), k, 112); } } image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif); } // 将字符串数值转换为二进制字符串数值 public string ConvertToBinaryString( string buf) { int[] temp = new int[ 20]; string binary; int val = 0, i = 0, j; // 先将字符转化为十进制数 try { val = Convert.ToInt32(buf); } catch { val = 0; } if (val == 0) { return ( " 0000 "); } i = 0; while (val != 0) { temp[i++] = val % 2; val /= 2; } binary = ""; for (j = 0; j <= i - 1; j++) { binary += ( char)(temp[i - j - 1] + 48); } if (binary.Length < 4) // 如果小于4位左边补零 { int len = 4 - binary.Length; string str = ""; while (len > 0) { str += " 0 "; len--; } binary = str + binary; } return (binary); } protected void Button1_Click( object sender, EventArgs e) { CreateCodeLogo(TextBox1.Text); }
C#实现Code39条形码在线输出(Asp.net)
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
using System; using System.Collections; using System.ComponentModel; using System.Drawing; using System.Data; namespace test.test.MyImage.BandCode { /// <summary> /// Code39编码 /// </summary> public class Code39 { 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; } } public Code39() { 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( " contentquot;, " 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 /// </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(); } } }
default.aspx.cs文件
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Drawing; using System.Web.UI.WebControls; namespace test { public partial class _Default : System.Web.UI.Page { protected void Page_Load( object sender, EventArgs e) { test.MyImage.BandCode.Code39 _Code39 = new test.MyImage.BandCode.Code39(); _Code39.Height = 120; _Code39.Magnify = 1; _Code39.ViewFont = new Font( " 宋体 ", 20); System.Drawing.Image _CodeImage = _Code39.GetCodeImage( " 123ABC4567890FWF ", test.MyImage.BandCode.Code39.Code39Model.Code39Normal, true); System.IO.MemoryStream _Stream = new System.IO.MemoryStream(); _CodeImage.Save(_Stream, System.Drawing.Imaging.ImageFormat.Jpeg); _CodeImage.Save( @" C:\1.jpeg "); _CodeImage.Save( @" C:\1.BMP "); _CodeImage.Save( @" C:\1.GIF "); Response.ContentType = " image/jpeg "; Response.Clear(); Response.BufferOutput = true; Response.BinaryWrite(_Stream.GetBuffer()); Response.Flush(); } } }
default.aspx文件
<%@ Page Language= " C# " AutoEventWireup= " true " CodeBehind= " Default.aspx.cs " Inherits= " test._Default " %> <body> <form id= " form1 " runat= " server "> <div> // 输入image的那个页面 <asp:Image ID= " Image1 " runat= " server " ImageUrl= " ~/Default.aspx "/> </div> </form> </body>
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