CODE 128 条码打印类 实现条码打印、显示
CODE 128 条码打印类 实现条码打印、显示
调用方法
Code128 objCode = new Code128();
objCode.Width = right ; //宽度
objCode.Height = bottom - mheight; //高度
objCode.Draw128Barcode(g, content, new Point(left, top));
///
/// 128条码打印类
///
public class Code128
{
//各个编码的开始标记
private static string START_A = "11010000100";
private static string START_B = "11010010000";
private static string START_C = "11010011100";
//编码结束标记
private static string STOP = "1100011101011";
//编码切换标记
private static string SWITCH_B_TO_C = "10111011110";
private static string SWITCH_C_TO_B = "10111101110";
//当前的编码
private string mCurrCode = string.Empty;
//128 码对应的编码规则
private static string[] CodePaterm = { "11011001100", "11001101100", "11001100110", "10010011000", "10010001100", // 0-4
"10001001100", "10011001000", "10011000100", "10001100100", "11001001000","11001000100" , // 5-10
"11000100100", "10110011100", "10011011100", "10011001110", "10111001100", // 11-15
"10011101100", "10011100110", "11001110010", "11001011100", "11001001110", // 16-20
"11011100100", "11001110100", "11101101110", "11101001100", "11100101100", // 21-25
"11100100110", "11101100100", "11100110100", "11100110010", "11011011000", // 26-30
"11011000110", "11000110110", "10100011000", "10001011000", "10001000110", // 31-35
"10110001000", "10001101000", "10001100010", "11010001000", "11000101000", // 36-40
"11000100010", "10110111000", "10110001110", "10001101110", "10111011000", // 41-45
"10111000110", "10001110110", "11101110110", "11010001110", "11000101110", // 46-50
"11011101000", "11011100010", "11011101110", "11101011000", "11101000110", // 51-55
"11100010110", "11101101000", "11101100010", "11100011010", "11101111010", // 56-60
"11001000010", "11110001010", "10100110000", "10100001100", "10010110000", // 61-65
"10010000110", "10000101100", "10000100110", "10110010000", "10110000100", // 66-70
"10011010000", "10011000010", "10000110100", "10000110010", "11000010010", // 71-75
"11001010000", "11110111010", "11000010100", "10001111010", "10100111100", // 76-80
"10010111100", "10010011110", "10111100100", "10011110100", "10011110010", // 81-85
"11110100100", "11110010100", "11110010010", "11011011110", "11011110110", // 86-90
"11110110110", "10101111000", "10100011110", "10001011110", "10111101000", // 91-95
"10111100010", "11110101000", "11110100010", "10111011110", "10111101110", // 96-100
"11101011110", "11110101110", "11010000100", "11010010000", "11010011100", // 101-105
"1100011101011" // 106
};
public Code128()
{
}
//条码宽、高
private float _fWidth = 37.29f;
private float _fHeight = 12.93f;
//当前编码子集 CODE A OR B OR C
private string CURR_CODE_SET = string.Empty;
public float Width
{
get
{
return _fWidth;
}
set
{
_fWidth = value;
}
}
public float Height
{
get
{
return _fHeight;
}
set
{
_fHeight = value;
}
}
///
/// 方法名称：GetCodeValue
/// 内容摘要：返回CODE 128 B中的字符对应的数值
///
private int GetCodeValue(string m_Code)
{
int numValue = 0;
switch (m_Code)
{
case "!":
numValue = 01;
break;
case "/"":
numValue = 02;
break;
case "#":
numValue = 03;
break;
case "$":
numValue = 04;
break;
case "%":
numValue = 05;
break;
case "&":
numValue = 06;
break;
case "'":
numValue = 07;
break;
case "(":
numValue = 08;
break;
case ")":
numValue = 09;
break;
case "*":
numValue = 10;
break;
case "+":
numValue = 11;
break;
case ",":
numValue = 12;
break;
case "-":
numValue = 13;
break;
case ".":
numValue = 14;
break;
case "/":
numValue = 15;
break;
case "0":
numValue = 16;
break;
case "1":
numValue = 17;
break;
case "2":
numValue = 18;
break;
case "3":
numValue = 19;
break;
case "4":
numValue = 20;
break;
case "5":
numValue = 21;
break;
case "6":
numValue = 22;
break;
case "7":
numValue = 23;
break;
case "8":
numValue = 24;
break;
case "9":
numValue = 25;
break;
case "A":
numValue = 33;
break;
case "B":
numValue = 34;
break;
case "C":
numValue = 35;
break;
case "D":
numValue = 36;
break;
case "E":
numValue = 37;
break;
case "F":
numValue = 38;
break;
case "G":
numValue = 39;
break;
case "H":
numValue = 40;
break;
case "I":
numValue = 41;
break;
case "J":
numValue = 42;
break;
case "K":
numValue = 43;
break;
case "L":
numValue = 44;
break;
case "M":
numValue = 45;
break;
case "N":
numValue = 46;
break;
case "O":
numValue = 47;
break;
case "P":
numValue = 48;
break;
case "Q":
numValue = 49;
break;
case "R":
numValue = 50;
break;
case "S":
numValue = 51;
break;
case "T":
numValue = 52;
break;
case "U":
numValue = 53;
break;
case "V":
numValue = 54;
break;
case "W":
numValue = 55;
break;
case "X":
numValue = 56;
break;
case "Y":
numValue = 57;
break;
case "Z":
numValue = 58;
break;
case "[":
numValue = 59;
break;
case "//":
numValue = 60;
break;
case "]":
numValue = 61;
break;
case "^":
numValue = 62;
break;
case "_":
numValue = 63;
break;
case "`":
numValue = 64;
break;
case "a":
numValue = 65;
break;
case "b":
numValue = 66;
break;
case "c":
numValue = 67;
break;
case "d":
numValue = 68;
break;
case "e":
numValue = 69;
break;
case "f":
numValue = 70;
break;
case "g":
numValue = 71;
break;
case "h":
numValue = 72;
break;
case "i":
numValue = 73;
break;
case "j":
numValue = 74;
break;
case "k":
numValue = 75;
break;
case "l":
numValue = 76;
break;
case "m":
numValue = 77;
break;
case "n":
numValue = 78;
break;
case "o":
numValue = 79;
break;
case "p":
numValue = 80;
break;
case "q":
numValue = 81;
break;
case "r":
numValue = 82;
break;
case "s":
numValue = 83;
break;
case "t":
numValue = 84;
break;
case "u":
numValue = 85;
break;
case "v":
numValue = 86;
break;
case "w":
numValue = 87;
break;
case "x":
numValue = 88;
break;
case "y":
numValue = 89;
break;
case "z":
numValue = 90;
break;
case "{":
numValue = 91;
break;
case "|":
numValue = 92;
break;
case "}":
numValue = 93;
break;
case "~":
numValue = 94;
break;
}
return numValue;
}
///
/// 打印128条码。
///
/// 打印对象
/// 坐标
public void Draw128Barcode(System.Drawing.Graphics g, string strCode, System.Drawing.Point pt)
{
//开始打印位置
float xStart = pt.X;
float yStart = pt.Y;
//生成编码字符
string strCodeString = GenerateCodingString(strCode);
//计算条形宽度
// float lineWidth = _fWidth / strCodeString.Length ;
float lineWidth = 1.0f;
System.Drawing.SolidBrush brush = new System.Drawing.SolidBrush(System.Drawing.Color.Black);
float xPosition = 0;
//画每个编码的条形.
for (int i = 0; i < strCodeString.Length; i++)
{
if (strCodeString.Substring(i, 1) == "1")
{
g.FillRectangle(brush, xPosition + xStart, yStart, lineWidth, _fHeight);
}
xPosition += lineWidth;
}
}
///
/// 生成要打印的128编码字符
///
/// 要打印的字符
///
private string GenerateCodingString(string strCode)
{
//要处理的字符
string strToCode = strCode;
//当前处理的字符
string strCurr = string.Empty;
//下一个非数字字符前一位
int iNextNumPos = 0;
//序号
int iNo = 1;
int iCodeNo = 0;
//检验值
long lngCheckDigitSum = 0;
long lngCheckDigit = 0;
//生成的编码字符
System.Text.StringBuilder sbCode128 = new System.Text.StringBuilder();
//设置开始的编码，数字大于3位时采用C编码，否则采用B编码
if (GetNumberStringLen(strToCode) > 3)
{
//采用编码C
mCurrCode = START_C;
lngCheckDigitSum = 105;
}
else
{
mCurrCode = START_B;
lngCheckDigitSum = 104;
}
//开始的编码置于第一位
sbCode128.Append(mCurrCode);
//处理所有的字符，生成要打印的编码
while (strToCode != string.Empty)
{
//从当前开始数字字符长度
iNextNumPos = GetNumberStringLen(strToCode);
//编码切换处理
if (iNextNumPos < 2) //1个数字或无数字，如不是B编码，则必须转为B编码
{
//不是B编码，则切换到B编码
if ((mCurrCode != START_B) && (mCurrCode != SWITCH_C_TO_B))
{
sbCode128.Append(SWITCH_C_TO_B);
mCurrCode = SWITCH_C_TO_B;
iCodeNo = 100;
lngCheckDigitSum = lngCheckDigitSum + iNo * iCodeNo;
iNo++;
}
}
else if (iNextNumPos > 3) //4个或以上数字，则必须转为C编码
{
//不是C编码，则切换到C编码
if ((mCurrCode != START_C) && (mCurrCode != SWITCH_B_TO_C))
{
sbCode128.Append(SWITCH_B_TO_C);
mCurrCode = SWITCH_B_TO_C;
iCodeNo = 99;
lngCheckDigitSum = lngCheckDigitSum + iNo * iCodeNo;
iNo++;
}
}
//处理当前字符对于编码B，直接取第一个字符，获得对应编码字符
if ((mCurrCode == START_B) || (mCurrCode == SWITCH_C_TO_B))
{
//截取第一个字符
strCurr = strToCode.Substring(0, 1);
strToCode = strToCode.Substring(1);
//添加到字符编码中
iCodeNo = GetCodeValue(strCurr);
sbCode128.Append(CodePaterm[iCodeNo]);
}
else
{
//C编码，则取2位字符编码
strCurr = strToCode.Substring(0, 2);
strToCode = strToCode.Substring(2);
//添加到字符编码中
iCodeNo = Convert.ToInt32(strCurr);
sbCode128.Append(CodePaterm[iCodeNo]);
}
//计算校验位
lngCheckDigitSum = lngCheckDigitSum + iNo * iCodeNo;
iNo++;
}
//添加校验位
lngCheckDigit = lngCheckDigitSum % 103;
sbCode128.Append(CodePaterm[lngCheckDigit]);
//添加结束位
sbCode128.Append(STOP);
return sbCode128.ToString();
}
///
/// 返回数字字符长度
///
///
private int GetNumberStringLen(string strCode)
{
int i = 0;
//获得数字部分长度
for (i = 0; i < strCode.Length; i++)
{
if (!char.IsNumber(strCode, i))
break;
}
return i;
}
}