实例介绍
【实例简介】
本实例实现了以下功能：
1.39条码生成功能
2.EAN-13条码生成功能
3.Code128条码生成功能
4.QR Code码制的二维条码生成
5.二维码制的解析功能
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Drawing;
using System.Text.RegularExpressions;
using System.Collections;
/// <summary>
///BarCode 的摘要说明
/// </summary>
public class BarCodeHelper
{
public static string get39(string s, int width, int height)
{
Hashtable ht = new Hashtable();
#region 39码 12位
ht.Add('A', "110101001011");
ht.Add('B', "101101001011");
ht.Add('C', "110110100101");
ht.Add('D', "101011001011");
ht.Add('E', "110101100101");
ht.Add('F', "101101100101");
ht.Add('G', "101010011011");
ht.Add('H', "110101001101");
ht.Add('I', "101101001101");
ht.Add('J', "101011001101");
ht.Add('K', "110101010011");
ht.Add('L', "101101010011");
ht.Add('M', "110110101001");
ht.Add('N', "101011010011");
ht.Add('O', "110101101001");
ht.Add('P', "101101101001");
ht.Add('Q', "101010110011");
ht.Add('R', "110101011001");
ht.Add('S', "101101011001");
ht.Add('T', "101011011001");
ht.Add('U', "110010101011");
ht.Add('V', "100110101011");
ht.Add('W', "110011010101");
ht.Add('X', "100101101011");
ht.Add('Y', "110010110101");
ht.Add('Z', "100110110101");
ht.Add('0', "101001101101");
ht.Add('1', "110100101011");
ht.Add('2', "101100101011");
ht.Add('3', "110110010101");
ht.Add('4', "101001101011");
ht.Add('5', "110100110101");
ht.Add('6', "101100110101");
ht.Add('7', "101001011011");
ht.Add('8', "110100101101");
ht.Add('9', "101100101101");
ht.Add(' ', "100101001001");
ht.Add('-', "100101011011");
ht.Add('*', "100101101101");
ht.Add('/', "100100101001");
ht.Add('%', "101001001001");
ht.Add('$', "100100100101");
ht.Add('.', "110010101101");
ht.Add(' ', "100110101101");
#endregion
#region 39码 9位
#endregion
s = s.ToUpper();
string result_bin = "";//二进制串
try
{
foreach (char ch in s)
{
result_bin = ht[ch].ToString();
result_bin = "0";//间隔，与一个单位的线条宽度相等
}
}
catch { return "存在不允许的字符！"; }
string result_html = "";//HTML代码
string color = "";//颜色
foreach (char c in result_bin)
{
color = c == '0' ? "#FFFFFF" : "#000000";
result_html = "<div style=\"width:" width "px;height:" height "px;float:left;background:" color ";\"></div>";
}
result_html = "<div style=\"clear:both\"></div>";
int len = ht['*'].ToString().Length;
foreach (char c in s)
{
result_html = "<div style=\"width:" (width * (len 1)) "px;float:left;color:#000000;text-align:center;\">" c "</div>";
}
result_html = "<div style=\"clear:both\"></div>";
return "<div style=\"background:#FFFFFF;padding:5px;font-size:" (width * 10) "px;font-family:'楷体';\">" result_html "</div>";
}
public static string getEAN13(string s, int width, int height)
{
int checkcode_input = -1;//输入的校验码
if (!Regex.IsMatch(s, @"^\d{12}$"))
{
if (!Regex.IsMatch(s, @"^\d{13}$"))
{
return "存在不允许的字符！";
}
else
{
checkcode_input = int.Parse(s[12].ToString());
s = s.Substring(0, 12);
}
}
int sum_even = 0;//偶数位之和
int sum_odd = 0;//奇数位之和
for (int i = 0; i < 12; i )
{
if (i % 2 == 0)
{
sum_odd = int.Parse(s[i].ToString());
}
else
{
sum_even = int.Parse(s[i].ToString());
}
}
int checkcode = (10 - (sum_even * 3 sum_odd) % 10) % 10;//校验码
if (checkcode_input > 0 && checkcode_input != checkcode)
{
return "输入的校验码错误！";
}
s = checkcode;//变成13位
// 000000000101左侧42个01010右侧35个校验7个101000000000
// 6 101左侧6位 01010右侧5位 校验1位101000000000
string result_bin = "";//二进制串
result_bin = "000000000101";
string type = ean13type(s[0]);
for (int i = 1; i < 7; i )
{
result_bin = ean13(s[i], type[i - 1]);
}
result_bin = "01010";
for (int i = 7; i < 13; i )
{
result_bin = ean13(s[i], 'C');
}
result_bin = "101000000000";
string result_html = "";//HTML代码
string color = "";//颜色
int height_bottom = width * 5;
foreach (char c in result_bin)
{
color = c == '0' ? "#FFFFFF" : "#000000";
result_html = "<div style=\"width:" width "px;height:" height "px;float:left;background:" color ";\"></div>";
}
result_html = "<div style=\"clear:both\"></div>";
result_html = "<div style=\"float:left;color:#000000;width:" (width * 9) "px;text-align:center;\">" s[0] "</div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#FFFFFF;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
for (int i = 1; i < 7; i )
{
result_html = "<div style=\"float:left;width:" (width * 7) "px;color:#000000;text-align:center;\">" s[i] "</div>";
}
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#FFFFFF;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#FFFFFF;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#FFFFFF;\"></div>";
for (int i = 7; i < 13; i )
{
result_html = "<div style=\"float:left;width:" (width * 7) "px;color:#000000;text-align:center;\">" s[i] "</div>";
}
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#FFFFFF;\"></div>";
result_html = "<div style=\"float:left;width:" width "px;height:" height_bottom "px;background:#000000;\"></div>";
result_html = "<div style=\"float:left;color:#000000;width:" (width * 9) "px;\"></div>";
result_html = "<div style=\"clear:both\"></div>";
return "<div style=\"background:#FFFFFF;padding:0px;font-size:" (width * 10) "px;font-family:'楷体';\">" result_html "</div>";
}
private static string ean13(char c, char type)
{
switch (type)
{
case 'A':
{
switch (c)
{
case '0': return "0001101";
case '1': return "0011001";
case '2': return "0010011";
case '3': return "0111101";//011101
case '4': return "0100011";
case '5': return "0110001";
case '6': return "0101111";
case '7': return "0111011";
case '8': return "0110111";
case '9': return "0001011";
default: return "Error!";
}
}
case 'B':
{
switch (c)
{
case '0': return "0100111";
case '1': return "0110011";
case '2': return "0011011";
case '3': return "0100001";
case '4': return "0011101";
case '5': return "0111001";
case '6': return "0000101";//000101
case '7': return "0010001";
case '8': return "0001001";
case '9': return "0010111";
default: return "Error!";
}
}
case 'C':
{
switch (c)
{
case '0': return "1110010";
case '1': return "1100110";
case '2': return "1101100";
case '3': return "1000010";
case '4': return "1011100";
case '5': return "1001110";
case '6': return "1010000";
case '7': return "1000100";
case '8': return "1001000";
case '9': return "1110100";
default: return "Error!";
}
}
default: return "Error!";
}
}
private static string ean13type(char c)
{
switch (c)
{
case '0': return "AAAAAA";
case '1': return "AABABB";
case '2': return "AABBAB";
case '3': return "AABBBA";
case '4': return "ABAABB";
case '5': return "ABBAAB";
case '6': return "ABBBAA";//中国
case '7': return "ABABAB";
case '8': return "ABABBA";
case '9': return "ABBABA";
default: return "Error!";
}
}
#region Code patterns
// in principle these rows should each have 6 elements
// however, the last one -- STOP -- has 7. The cost of the
// extra integers is trivial, and this lets the code flow
// much more elegantly
private static readonly int[,] cPatterns =
{
{2,1,2,2,2,2,0,0}, // 0
{2,2,2,1,2,2,0,0}, // 1
{2,2,2,2,2,1,0,0}, // 2
{1,2,1,2,2,3,0,0}, // 3
{1,2,1,3,2,2,0,0}, // 4
{1,3,1,2,2,2,0,0}, // 5
{1,2,2,2,1,3,0,0}, // 6
{1,2,2,3,1,2,0,0}, // 7
{1,3,2,2,1,2,0,0}, // 8
{2,2,1,2,1,3,0,0}, // 9
{2,2,1,3,1,2,0,0}, // 10
{2,3,1,2,1,2,0,0}, // 11
{1,1,2,2,3,2,0,0}, // 12
{1,2,2,1,3,2,0,0}, // 13
{1,2,2,2,3,1,0,0}, // 14
{1,1,3,2,2,2,0,0}, // 15
{1,2,3,1,2,2,0,0}, // 16
{1,2,3,2,2,1,0,0}, // 17
{2,2,3,2,1,1,0,0}, // 18
{2,2,1,1,3,2,0,0}, // 19
{2,2,1,2,3,1,0,0}, // 20
{2,1,3,2,1,2,0,0}, // 21
{2,2,3,1,1,2,0,0}, // 22
{3,1,2,1,3,1,0,0}, // 23
{3,1,1,2,2,2,0,0}, // 24
{3,2,1,1,2,2,0,0}, // 25
{3,2,1,2,2,1,0,0}, // 26
{3,1,2,2,1,2,0,0}, // 27
{3,2,2,1,1,2,0,0}, // 28
{3,2,2,2,1,1,0,0}, // 29
{2,1,2,1,2,3,0,0}, // 30
{2,1,2,3,2,1,0,0}, // 31
{2,3,2,1,2,1,0,0}, // 32
{1,1,1,3,2,3,0,0}, // 33
{1,3,1,1,2,3,0,0}, // 34
{1,3,1,3,2,1,0,0}, // 35
{1,1,2,3,1,3,0,0}, // 36
{1,3,2,1,1,3,0,0}, // 37
{1,3,2,3,1,1,0,0}, // 38
{2,1,1,3,1,3,0,0}, // 39
{2,3,1,1,1,3,0,0}, // 40
{2,3,1,3,1,1,0,0}, // 41
{1,1,2,1,3,3,0,0}, // 42
{1,1,2,3,3,1,0,0}, // 43
{1,3,2,1,3,1,0,0}, // 44
{1,1,3,1,2,3,0,0}, // 45
{1,1,3,3,2,1,0,0}, // 46
{1,3,3,1,2,1,0,0}, // 47
{3,1,3,1,2,1,0,0}, // 48
{2,1,1,3,3,1,0,0}, // 49
{2,3,1,1,3,1,0,0}, // 50
{2,1,3,1,1,3,0,0}, // 51
{2,1,3,3,1,1,0,0}, // 52
{2,1,3,1,3,1,0,0}, // 53
{3,1,1,1,2,3,0,0}, // 54
{3,1,1,3,2,1,0,0}, // 55
{3,3,1,1,2,1,0,0}, // 56
{3,1,2,1,1,3,0,0}, // 57
{3,1,2,3,1,1,0,0}, // 58
{3,3,2,1,1,1,0,0}, // 59
{3,1,4,1,1,1,0,0}, // 60
{2,2,1,4,1,1,0,0}, // 61
{4,3,1,1,1,1,0,0}, // 62
{1,1,1,2,2,4,0,0}, // 63
{1,1,1,4,2,2,0,0}, // 64
{1,2,1,1,2,4,0,0}, // 65
{1,2,1,4,2,1,0,0}, // 66
{1,4,1,1,2,2,0,0}, // 67
{1,4,1,2,2,1,0,0}, // 68
{1,1,2,2,1,4,0,0}, // 69
{1,1,2,4,1,2,0,0}, // 70
{1,2,2,1,1,4,0,0}, // 71
{1,2,2,4,1,1,0,0}, // 72
{1,4,2,1,1,2,0,0}, // 73
{1,4,2,2,1,1,0,0}, // 74
{2,4,1,2,1,1,0,0}, // 75
{2,2,1,1,1,4,0,0}, // 76
{4,1,3,1,1,1,0,0}, // 77
{2,4,1,1,1,2,0,0}, // 78
{1,3,4,1,1,1,0,0}, // 79
{1,1,1,2,4,2,0,0}, // 80
{1,2,1,1,4,2,0,0}, // 81
{1,2,1,2,4,1,0,0}, // 82
{1,1,4,2,1,2,0,0}, // 83
{1,2,4,1,1,2,0,0}, // 84
{1,2,4,2,1,1,0,0}, // 85
{4,1,1,2,1,2,0,0}, // 86
{4,2,1,1,1,2,0,0}, // 87
{4,2,1,2,1,1,0,0}, // 88
{2,1,2,1,4,1,0,0}, // 89
{2,1,4,1,2,1,0,0}, // 90
{4,1,2,1,2,1,0,0}, // 91
{1,1,1,1,4,3,0,0}, // 92
{1,1,1,3,4,1,0,0}, // 93
{1,3,1,1,4,1,0,0}, // 94
{1,1,4,1,1,3,0,0}, // 95
{1,1,4,3,1,1,0,0}, // 96
{4,1,1,1,1,3,0,0}, // 97
{4,1,1,3,1,1,0,0}, // 98
{1,1,3,1,4,1,0,0}, // 99
{1,1,4,1,3,1,0,0}, // 100
{3,1,1,1,4,1,0,0}, // 101
{4,1,1,1,3,1,0,0}, // 102
{2,1,1,4,1,2,0,0}, // 103
{2,1,1,2,1,4,0,0}, // 104
{2,1,1,2,3,2,0,0}, // 105
{2,3,3,1,1,1,2,0} // 106
};
#endregion Code patterns
#region 128条形码
private const int cQuietWidth = 10;
/// <summary>
/// Make an image of a Code128 barcode for a given string
/// </summary>
/// <param name="InputData">Message to be encoded</param>
/// <param name="BarWeight">Base thickness for bar width (1 or 2 works well)</param>
/// <param name="AddQuietZone">Add required horiz margins (use if output is tight)</param>
/// <returns>An Image of the Code128 barcode representing the message</returns>
public static Image MakeBarcodeImage(string InputData, int BarWeight, bool AddQuietZone)
{
// get the Code128 codes to represent the message
Code128Content content = new Code128Content(InputData);
int[] codes = content.Codes;
int width, height;
width = ((codes.Length - 3) * 11 35) * BarWeight;
height = Convert.ToInt32(System.Math.Ceiling(Convert.ToSingle(width) * .15F));
if (AddQuietZone)
{
width = 20; // on both sides
}
//draw the codetext bottom
height = 30;
// get surface to draw on
Image myimg = new System.Drawing.Bitmap(width, height);
using (Graphics gr = Graphics.FromImage(myimg))
{
// set to white so we don't have to fill the spaces with white
gr.FillRectangle(System.Drawing.Brushes.White, 0, 0, width, height);
// skip quiet zone
int cursor = AddQuietZone ? 10 : 0;
for (int codeidx = 0; codeidx < codes.Length; codeidx )
{
int code = codes[codeidx];
// take the bars two at a time: a black and a white
for (int bar = 0; bar < 8; bar = 2)
{
int barwidth = cPatterns[code, bar] * BarWeight;
int spcwidth = cPatterns[code, bar 1] * BarWeight;
// if width is zero, don't try to draw it
if (barwidth > 0)
{
gr.FillRectangle(System.Drawing.Brushes.Black, cursor, 5, barwidth, height - 20);
}
// note that we never need to draw the space, since we
// initialized the graphics to all white
// advance cursor beyond this pair
cursor = (barwidth spcwidth);
}
}
gr.DrawString(InputData, new Font("Arial", 9), Brushes.Black, new PointF(10, height - 15));
}
return myimg;
}
#endregion
}
#region Code128Content
public enum CodeSet
{
CodeA
, CodeB
// ,CodeC // not supported
}
/// <summary>
/// Represent the set of code values to be output into barcode form
/// </summary>
public class Code128Content
{
private int[] mCodeList;
/// <summary>
/// Create content based on a string of ASCII data
/// </summary>
/// <param name="AsciiData">the string that should be represented</param>
public Code128Content(string AsciiData)
{
mCodeList = StringToCode128(AsciiData);
}
/// <summary>
/// Provides the Code128 code values representing the object's string
/// </summary>
public int[] Codes
{
get
{
return mCodeList;
}
}
/// <summary>
/// Transform the string into integers representing the Code128 codes
/// necessary to represent it
/// </summary>
/// <param name="AsciiData">String to be encoded</param>
/// <returns>Code128 representation</returns>
private int[] StringToCode128(string AsciiData)
{
// turn the string into ascii byte data
byte[] asciiBytes = Encoding.ASCII.GetBytes(AsciiData);
// decide which codeset to start with
Code128Code.CodeSetAllowed csa1 = asciiBytes.Length > 0 ? Code128Code.CodesetAllowedForChar(asciiBytes[0]) : Code128Code.CodeSetAllowed.CodeAorB;
Code128Code.CodeSetAllowed csa2 = asciiBytes.Length > 0 ? Code128Code.CodesetAllowedForChar(asciiBytes[1]) : Code128Code.CodeSetAllowed.CodeAorB;
CodeSet currcs = GetBestStartSet(csa1, csa2);
// set up the beginning of the barcode
System.Collections.ArrayList codes = new System.Collections.ArrayList(asciiBytes.Length 3); // assume no codeset changes, account for start, checksum, and stop
codes.Add(Code128Code.StartCodeForCodeSet(currcs));
// add the codes for each character in the string
for (int i = 0; i < asciiBytes.Length; i )
{
int thischar = asciiBytes[i];
int nextchar = asciiBytes.Length > (i 1) ? asciiBytes[i 1] : -1;
codes.AddRange(Code128Code.CodesForChar(thischar, nextchar, ref currcs));
}
// calculate the check digit
int checksum = (int)(codes[0]);
for (int i = 1; i < codes.Count; i )
{
checksum = i * (int)(codes[i]);
}
codes.Add(checksum % 103);
codes.Add(Code128Code.StopCode());
int[] result = codes.ToArray(typeof(int)) as int[];
return result;
}
/// <summary>
/// Determines the best starting code set based on the the first two
/// characters of the string to be encoded
/// </summary>
/// <param name="csa1">First character of input string</param>
/// <param name="csa2">Second character of input string</param>
/// <returns>The codeset determined to be best to start with</returns>
private CodeSet GetBestStartSet(Code128Code.CodeSetAllowed csa1, Code128Code.CodeSetAllowed csa2)
{
int vote = 0;
vote = (csa1 == Code128Code.CodeSetAllowed.CodeA) ? 1 : 0;
vote = (csa1 == Code128Code.CodeSetAllowed.CodeB) ? -1 : 0;
vote = (csa2 == Code128Code.CodeSetAllowed.CodeA) ? 1 : 0;
vote = (csa2 == Code128Code.CodeSetAllowed.CodeB) ? -1 : 0;
return (vote > 0) ? CodeSet.CodeA : CodeSet.CodeB; // ties go to codeB due to my own prejudices
}
}
/// <summary>
/// Static tools for determining codes for individual characters in the content
/// </summary>
public static class Code128Code
{
#region Constants
private const int cSHIFT = 98;
private const int cCODEA = 101;
private const int cCODEB = 100;
private const int cSTARTA = 103;
private const int cSTARTB = 104;
private const int cSTOP = 106;
#endregion
/// <summary>
/// Get the Code128 code value(s) to represent an ASCII character, with
/// optional look-ahead for length optimization
/// </summary>
/// <param name="CharAscii">The ASCII value of the character to translate</param>
/// <param name="LookAheadAscii">The next character in sequence (or -1 if none)</param>
/// <param name="CurrCodeSet">The current codeset, that the returned codes need to follow;
/// if the returned codes change that, then this value will be changed to reflect it</param>
/// <returns>An array of integers representing the codes that need to be output to produce the
/// given character</returns>
public static int[] CodesForChar(int CharAscii, int LookAheadAscii, ref CodeSet CurrCodeSet)
{
int[] result;
int shifter = -1;
if (!CharCompatibleWithCodeset(CharAscii, CurrCodeSet))
{
// if we have a lookahead character AND if the next character is ALSO not compatible
if ((LookAheadAscii != -1) && !CharCompatibleWithCodeset(LookAheadAscii, CurrCodeSet))
{
// we need to switch code sets
switch (CurrCodeSet)
{
case CodeSet.CodeA:
shifter = cCODEB;
CurrCodeSet = CodeSet.CodeB;
break;
case CodeSet.CodeB:
shifter = cCODEA;
CurrCodeSet = CodeSet.CodeA;
break;
}
}
else
{
// no need to switch code sets, a temporary SHIFT will suffice
shifter = cSHIFT;
}
}
if (shifter != -1)
{
result = new int[2];
result[0] = shifter;
result[1] = CodeValueForChar(CharAscii);
}
else
{
result = new int[1];
result[0] = CodeValueForChar(CharAscii);
}
return result;
}
/// <summary>
/// Tells us which codesets a given character value is allowed in
/// </summary>
/// <param name="CharAscii">ASCII value of character to look at</param>
/// <returns>Which codeset(s) can be used to represent this character</returns>
public static CodeSetAllowed CodesetAllowedForChar(int CharAscii)
{
if (CharAscii >= 32 && CharAscii <= 95)
{
return CodeSetAllowed.CodeAorB;
}
else
{
return (CharAscii < 32) ? CodeSetAllowed.CodeA : CodeSetAllowed.CodeB;
}
}
/// <summary>
/// Determine if a character can be represented in a given codeset
/// </summary>
/// <param name="CharAscii">character to check for</param>
/// <param name="currcs">codeset context to test</param>
/// <returns>true if the codeset contains a representation for the ASCII character</returns>
public static bool CharCompatibleWithCodeset(int CharAscii, CodeSet currcs)
{
CodeSetAllowed csa = CodesetAllowedForChar(CharAscii);
return csa == CodeSetAllowed.CodeAorB
|| (csa == CodeSetAllowed.CodeA && currcs == CodeSet.CodeA)
|| (csa == CodeSetAllowed.CodeB && currcs == CodeSet.CodeB);
}
/// <summary>
/// Gets the integer code128 code value for a character (assuming the appropriate code set)
/// </summary>
/// <param name="CharAscii">character to convert</param>
/// <returns>code128 symbol value for the character</returns>
public static int CodeValueForChar(int CharAscii)
{
return (CharAscii >= 32) ? CharAscii - 32 : CharAscii 64;
}
/// <summary>
/// Return the appropriate START code depending on the codeset we want to be in
/// </summary>
/// <param name="cs">The codeset you want to start in</param>
/// <returns>The code128 code to start a barcode in that codeset</returns>
public static int StartCodeForCodeSet(CodeSet cs)
{
return cs == CodeSet.CodeA ? cSTARTA : cSTARTB;
}
/// <summary>
/// Return the Code128 stop code
/// </summary>
/// <returns>the stop code</returns>
public static int StopCode()
{
return cSTOP;
}
/// <summary>
/// Indicates which code sets can represent a character -- CodeA, CodeB, or either
/// </summary>
public enum CodeSetAllowed
{
CodeA,
CodeB,
CodeAorB
}
}
#endregion
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