c# 如何打印条形码

1、代码实现部分

//定义一个打印文档对象
PrintDocument printDocument1 = new PrintDocument();//开始打印
public void BeginPrint(string cardCode){printCardCode = cardCode;PrintInit();printDocument1.Print();}//初始化打印public void PrintInit(){printDocument1.DefaultPageSettings.PaperSize = new PaperSize("aa", 150, 80);printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);}//打印的页面void printDocument1_PrintPage(object sender, PrintPageEventArgs ev){string s = printCardCode;Code128 c = new Code128();Bitmap bmp = c.GetCodeImage(s, Code128.Encode.Code128C, ev.Graphics);}

2、Code128类

using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;public class Code128
{private DataTable m_Code128 = new DataTable();private uint m_Height = 40;/// <summary>/// 高度/// </summary>public uint Height { get { return m_Height; } set { m_Height = value; } }private Font m_ValueFont = null;/// <summary>/// 是否显示可见号码 如果为NULL不显示号码/// </summary>public Font ValueFont { get { return m_ValueFont; } set { m_ValueFont = value; } }private byte m_Magnify = 0;/// <summary>/// 放大倍数/// </summary>public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }/// <summary>/// 条码类别/// </summary>public enum Encode{Code128A,Code128B,Code128C,EAN128}public Code128(){m_Code128.Columns.Add("ID");m_Code128.Columns.Add("Code128A");m_Code128.Columns.Add("Code128B");m_Code128.Columns.Add("Code128C");m_Code128.Columns.Add("BandCode");m_Code128.CaseSensitive = true;#region 数据表m_Code128.Rows.Add("0", " ", " ", "00", "212222");m_Code128.Rows.Add("1", "!", "!", "01", "222122");m_Code128.Rows.Add("2", "\"", "\"", "02", "222221");m_Code128.Rows.Add("3", "#", "#", "03", "121223");m_Code128.Rows.Add("4", "$", "$", "04", "121322");m_Code128.Rows.Add("5", "%", "%", "05", "131222");m_Code128.Rows.Add("6", "&", "&", "06", "122213");m_Code128.Rows.Add("7", "'", "'", "07", "122312");m_Code128.Rows.Add("8", "(", "(", "08", "132212");m_Code128.Rows.Add("9", ")", ")", "09", "221213");m_Code128.Rows.Add("10", "*", "*", "10", "221312");m_Code128.Rows.Add("11", "+", "+", "11", "231212");m_Code128.Rows.Add("12", ",", ",", "12", "112232");m_Code128.Rows.Add("13", "-", "-", "13", "122132");m_Code128.Rows.Add("14", ".", ".", "14", "122231");m_Code128.Rows.Add("15", "/", "/", "15", "113222");m_Code128.Rows.Add("16", "0", "0", "16", "123122");m_Code128.Rows.Add("17", "1", "1", "17", "123221");m_Code128.Rows.Add("18", "2", "2", "18", "223211");m_Code128.Rows.Add("19", "3", "3", "19", "221132");m_Code128.Rows.Add("20", "4", "4", "20", "221231");m_Code128.Rows.Add("21", "5", "5", "21", "213212");m_Code128.Rows.Add("22", "6", "6", "22", "223112");m_Code128.Rows.Add("23", "7", "7", "23", "312131");m_Code128.Rows.Add("24", "8", "8", "24", "311222");m_Code128.Rows.Add("25", "9", "9", "25", "321122");m_Code128.Rows.Add("26", ":", ":", "26", "321221");m_Code128.Rows.Add("27", ";", ";", "27", "312212");m_Code128.Rows.Add("28", "<", "<", "28", "322112");m_Code128.Rows.Add("29", "=", "=", "29", "322211");m_Code128.Rows.Add("30", ">", ">", "30", "212123");m_Code128.Rows.Add("31", "?", "?", "31", "212321");m_Code128.Rows.Add("32", "@", "@", "32", "232121");m_Code128.Rows.Add("33", "A", "A", "33", "111323");m_Code128.Rows.Add("34", "B", "B", "34", "131123");m_Code128.Rows.Add("35", "C", "C", "35", "131321");m_Code128.Rows.Add("36", "D", "D", "36", "112313");m_Code128.Rows.Add("37", "E", "E", "37", "132113");m_Code128.Rows.Add("38", "F", "F", "38", "132311");m_Code128.Rows.Add("39", "G", "G", "39", "211313");m_Code128.Rows.Add("40", "H", "H", "40", "231113");m_Code128.Rows.Add("41", "I", "I", "41", "231311");m_Code128.Rows.Add("42", "J", "J", "42", "112133");m_Code128.Rows.Add("43", "K", "K", "43", "112331");m_Code128.Rows.Add("44", "L", "L", "44", "132131");m_Code128.Rows.Add("45", "M", "M", "45", "113123");m_Code128.Rows.Add("46", "N", "N", "46", "113321");m_Code128.Rows.Add("47", "O", "O", "47", "133121");m_Code128.Rows.Add("48", "P", "P", "48", "313121");m_Code128.Rows.Add("49", "Q", "Q", "49", "211331");m_Code128.Rows.Add("50", "R", "R", "50", "231131");m_Code128.Rows.Add("51", "S", "S", "51", "213113");m_Code128.Rows.Add("52", "T", "T", "52", "213311");m_Code128.Rows.Add("53", "U", "U", "53", "213131");m_Code128.Rows.Add("54", "V", "V", "54", "311123");m_Code128.Rows.Add("55", "W", "W", "55", "311321");m_Code128.Rows.Add("56", "X", "X", "56", "331121");m_Code128.Rows.Add("57", "Y", "Y", "57", "312113");m_Code128.Rows.Add("58", "Z", "Z", "58", "312311");m_Code128.Rows.Add("59", "[", "[", "59", "332111");m_Code128.Rows.Add("60", "\\", "\\", "60", "314111");m_Code128.Rows.Add("61", "]", "]", "61", "221411");m_Code128.Rows.Add("62", "^", "^", "62", "431111");m_Code128.Rows.Add("63", "_", "_", "63", "111224");m_Code128.Rows.Add("64", "NUL", "`", "64", "111422");m_Code128.Rows.Add("65", "SOH", "a", "65", "121124");m_Code128.Rows.Add("66", "STX", "b", "66", "121421");m_Code128.Rows.Add("67", "ETX", "c", "67", "141122");m_Code128.Rows.Add("68", "EOT", "d", "68", "141221");m_Code128.Rows.Add("69", "ENQ", "e", "69", "112214");m_Code128.Rows.Add("70", "ACK", "f", "70", "112412");m_Code128.Rows.Add("71", "BEL", "g", "71", "122114");m_Code128.Rows.Add("72", "BS", "h", "72", "122411");m_Code128.Rows.Add("73", "HT", "i", "73", "142112");m_Code128.Rows.Add("74", "LF", "j", "74", "142211");m_Code128.Rows.Add("75", "VT", "k", "75", "241211");m_Code128.Rows.Add("76", "FF", "I", "76", "221114");m_Code128.Rows.Add("77", "CR", "m", "77", "413111");m_Code128.Rows.Add("78", "SO", "n", "78", "241112");m_Code128.Rows.Add("79", "SI", "o", "79", "134111");m_Code128.Rows.Add("80", "DLE", "p", "80", "111242");m_Code128.Rows.Add("81", "DC1", "q", "81", "121142");m_Code128.Rows.Add("82", "DC2", "r", "82", "121241");m_Code128.Rows.Add("83", "DC3", "s", "83", "114212");m_Code128.Rows.Add("84", "DC4", "t", "84", "124112");m_Code128.Rows.Add("85", "NAK", "u", "85", "124211");m_Code128.Rows.Add("86", "SYN", "v", "86", "411212");m_Code128.Rows.Add("87", "ETB", "w", "87", "421112");m_Code128.Rows.Add("88", "CAN", "x", "88", "421211");m_Code128.Rows.Add("89", "EM", "y", "89", "212141");m_Code128.Rows.Add("90", "SUB", "z", "90", "214121");m_Code128.Rows.Add("91", "ESC", "{", "91", "412121");m_Code128.Rows.Add("92", "FS", "|", "92", "111143");m_Code128.Rows.Add("93", "GS", "}", "93", "111341");m_Code128.Rows.Add("94", "RS", "~", "94", "131141");m_Code128.Rows.Add("95", "US", "DEL", "95", "114113");m_Code128.Rows.Add("96", "FNC3", "FNC3", "96", "114311");m_Code128.Rows.Add("97", "FNC2", "FNC2", "97", "411113");m_Code128.Rows.Add("98", "SHIFT", "SHIFT", "98", "411311");m_Code128.Rows.Add("99", "CODEC", "CODEC", "99", "113141");m_Code128.Rows.Add("100", "CODEB", "FNC4", "CODEB", "114131");m_Code128.Rows.Add("101", "FNC4", "CODEA", "CODEA", "311141");m_Code128.Rows.Add("102", "FNC1", "FNC1", "FNC1", "411131");m_Code128.Rows.Add("103", "StartA", "StartA", "StartA", "211412");m_Code128.Rows.Add("104", "StartB", "StartB", "StartB", "211214");m_Code128.Rows.Add("105", "StartC", "StartC", "StartC", "211232");m_Code128.Rows.Add("106", "Stop", "Stop", "Stop", "2331112");#endregion}/// <summary>/// 获取128图形/// </summary>/// <param name="p_Text">文字</param>/// <param name="p_Code">编码</param>   /// <returns>图形</returns>public Bitmap GetCodeImage(string p_Text, Encode p_Code,Graphics g=null){string _ViewText = p_Text;string _Text = "";IList<int> _TextNumb = new List<int>();int _Examine = 0; //首位switch (p_Code){case Encode.Code128C:_Examine = 105;if (!((p_Text.Length & 1) == 0)) throw new Exception("128C长度必须是偶数");while (p_Text.Length != 0){int _Temp = 0;try{int _CodeNumb128 = Int32.Parse(p_Text.Substring(0, 2));}catch{throw new Exception("128C必须是数字！");}_Text += GetValue(p_Code, p_Text.Substring(0, 2), ref _Temp);_TextNumb.Add(_Temp);p_Text = p_Text.Remove(0, 2);}break;case Encode.EAN128:_Examine = 105;if (!((p_Text.Length & 1) == 0)) throw new Exception("EAN128长度必须是偶数");_TextNumb.Add(102);_Text += "411131";while (p_Text.Length != 0){int _Temp = 0;try{int _CodeNumb128 = Int32.Parse(p_Text.Substring(0, 2));}catch{throw new Exception("128C必须是数字！");}_Text += GetValue(Encode.Code128C, p_Text.Substring(0, 2), ref _Temp);_TextNumb.Add(_Temp);p_Text = p_Text.Remove(0, 2);}break;default:if (p_Code == Encode.Code128A){_Examine = 103;}else{_Examine = 104;}while (p_Text.Length != 0){int _Temp = 0;string _ValueCode = GetValue(p_Code, p_Text.Substring(0, 1), ref _Temp);if (_ValueCode.Length == 0) throw new Exception("无效的字符集!" + p_Text.Substring(0, 1).ToString());_Text += _ValueCode;_TextNumb.Add(_Temp);p_Text = p_Text.Remove(0, 1);}break;}if (_TextNumb.Count == 0) throw new Exception("错误的编码,无数据");_Text = _Text.Insert(0, GetValue(_Examine)); //获取开始位for (int i = 0; i != _TextNumb.Count; i++){_Examine += _TextNumb[i] * (i + 1);}_Examine = _Examine % 103;      //获得严效位_Text += GetValue(_Examine); //获取严效位_Text += "2331112"; //结束位Bitmap _CodeImage = GetImage(_Text, _ViewText,g);//GetViewText(_CodeImage, _ViewText);return _CodeImage;}/// <summary>/// 获取目标对应的数据/// </summary>/// <param name="p_Code">编码</param>/// <param name="p_Value">数值 A b 30</param>/// <param name="p_SetID">返回编号</param>/// <returns>编码</returns>private string GetValue(Encode p_Code, string p_Value, ref int p_SetID){if (m_Code128 == null) return "";DataRow[] _Row = m_Code128.Select(p_Code.ToString() + "='" + p_Value + "'");if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());p_SetID = Int32.Parse(_Row[0]["ID"].ToString());return _Row[0]["BandCode"].ToString();}/// <summary>/// 根据编号获得条纹/// </summary>/// <param name="p_CodeId"></param>/// <returns></returns>private string GetValue(int p_CodeId){DataRow[] _Row = m_Code128.Select("ID='" + p_CodeId.ToString() + "'");if (_Row.Length != 1) throw new Exception("验效位的编码错误" + p_CodeId.ToString());return _Row[0]["BandCode"].ToString();}/// <summary>/// 获得条码图形/// </summary>/// <param name="p_Text">文字</param>/// <returns>图形</returns>private Bitmap GetImage(string p_Text, string sourceText,Graphics g=null){char[] _Value = p_Text.ToCharArray();int _Width = 0;for (int i = 0; i != _Value.Length; i++){_Width += Int32.Parse(_Value[i].ToString()) * (m_Magnify + 1);}Bitmap _CodeImage = new Bitmap(_Width+4 , (int)m_Height + 12);Graphics _Garphics = g;//Pen _Pen;int _LenEx = 6;int _TopEx = 4;if (g == null){Graphics.FromImage(_CodeImage);_LenEx = 2;_TopEx = 0;}for (int i = 0; i != _Value.Length; i++){int _ValueNumb = Int32.Parse(_Value[i].ToString()) * (m_Magnify + 1); //获取宽和放大系数if (!((i & 1) == 0)){//_Pen = new Pen(Brushes.White, _ValueNumb);_Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, _TopEx, _ValueNumb, (int)m_Height));}else{//_Pen = new Pen(Brushes.Black, _ValueNumb);_Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, _TopEx, _ValueNumb, (int)m_Height));}//_Garphics.(_Pen, new Point(_LenEx, 0), new Point(_LenEx, m_Height));_LenEx += _ValueNumb;}_Garphics.DrawString(sourceText, new Font("宋体", 10f), new SolidBrush(Color.Black), new PointF(2, m_Height+_TopEx));if (_Garphics != g){_Garphics.Dispose();}return _CodeImage;}/// <summary>/// 显示可见条码文字 如果小于40 不显示文字/// </summary>/// <param name="p_Bitmap">图形</param>      private void GetViewText(Bitmap p_Bitmap, string p_ViewText){if (m_ValueFont == null) return;Graphics _Graphics = Graphics.FromImage(p_Bitmap);SizeF _DrawSize = _Graphics.MeasureString(p_ViewText, m_ValueFont);if (_DrawSize.Height > p_Bitmap.Height - 10 || _DrawSize.Width > p_Bitmap.Width){_Graphics.Dispose();return;}int _StarY = p_Bitmap.Height - (int)_DrawSize.Height;_Graphics.FillRectangle(Brushes.White, new Rectangle(0, _StarY, p_Bitmap.Width, (int)_DrawSize.Height));_Graphics.DrawString(p_ViewText, m_ValueFont, Brushes.Black, 0, _StarY);}//12345678//(105 + (1 * 12 + 2 * 34 + 3 * 56 + 4 *78)) % 103 = 47//结果为starc +12 +34 +56 +78 +47 +end}

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