C# Code128一維條碼產生器
功能：
用.Net的Drawing來畫出Code128條碼，顯示在網頁上，做個筆記比較不容易忘
這些code是網路上找來的，因為實在忘記出處為何，如有發現再補上原出處
Code128編碼規則可以參考https://en.wikipedia.org/wiki/Code_128
特性Code 128 ：
1.有A,B,C三種不同的編碼型態，可以提供128個標準的ASCII code字元.
128A (Code Set A) - ASCII 00 ~ 95 (0-9, A-Z 及控制碼)。
128B (Code Set B) - ASCII 32 ~ 127 (0-9, A-Z, a-z)。
128C (Code Set C) - 00-99 (數字00~99的編碼使用)
2.有一檢查碼，可自由決定是否要列印。
3.在可藉由A、B、C三種不同編碼型態交叉使用，以縮短條碼的長度。
4.可允許由左至右，或由右至左，雙向掃瞄。
顯示：
{
Code128 MyCode = new Code128();
//條碼高度
MyCode.Height = 50;
//可見號碼
MyCode.ValueFont = new Font("細明體", 12, FontStyle.Regular);
//產生條碼
System.Drawing.Image img = MyCode.GetCodeImage("83500-KBY-3050-HL-NH045PD", Code128.Encode.Code128A);
//在網頁上輸出
Response.Clear();
Response.ContentType = "image/jpeg";
img.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
}
Code128產生：
using System.Data;
using System.Drawing;
using System.Collections.Generic;
namespace SystemLead.Project.LocalReport.Web.TestCode
{
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>
/// 是否顯示可見號碼 如果為Null不顯示號碼
/// </summary>
public Font ValueFont { get { return m_ValueFont; } set { m_ValueFont = value; } }
private byte m_Magnify = 0;
/// <summary>
/// 放大倍數
/// </summary>
public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }
/// <summary>
/// 條碼類別
/// </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 資料表
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>
/// 獲取128圖形
/// </summary>
/// <param name="p_Text">文字</param>
/// <param name="p_Code">編碼</param>
/// <returns>圖形</returns>
public Bitmap GetCodeImage(string p_Text, Encode p_Code)
{
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長度必須是偶數");
while (p_Text.Length != 0)
{
int _Temp = 0;
try
{
int _CodeNumb128 = Int32.Parse(p_Text.Substring(0, 2));
}
catch
{
throw new Exception("128C必須是數位！");
}
_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長度必須是偶數");
_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必須是數位！");
}
_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("不正確字元集!" + 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("錯誤的編碼,無資料");
_Text = _Text.Insert(0, GetValue(_Examine)); //獲取開始位
for (int i = 0; i != _TextNumb.Count; i++)
{
_Examine += _TextNumb[i] * (i + 1);
}
_Examine = _Examine % 103; //獲得嚴效位
_Text += GetValue(_Examine); //獲取嚴效位
_Text += "2331112"; //結束位
Bitmap _CodeImage = GetImage(_Text);
GetViewText(_CodeImage, _ViewText);
return _CodeImage;
}
/// <summary>
/// 獲取目標對應的資料
/// </summary>
/// <param name="p_Code">編碼</param>
/// <param name="p_Value">數值 A b 30</param>
/// <param name="p_SetID">返回編號</param>
/// <returns>編碼</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("錯誤的編碼" + p_Value.ToString());
p_SetID = Int32.Parse(_Row[0]["ID"].ToString());
return _Row[0]["BandCode"].ToString();
}
/// <summary>
/// 根據編號獲得條紋
/// </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("驗效位的編碼錯誤" + p_CodeId.ToString());
return _Row[0]["BandCode"].ToString();
}
/// <summary>
/// 獲得條碼圖形
/// </summary>
/// <param name="p_Text">文字</param>
/// <returns>圖形</returns>
private Bitmap GetImage(string p_Text)
{
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, (int)m_Height);
Graphics _Garphics = Graphics.FromImage(_CodeImage);
//Pen _Pen;
int _LenEx = 0;
for (int i = 0; i != _Value.Length; i++)
{
int _ValueNumb = Int32.Parse(_Value[i].ToString()) * (m_Magnify + 1); //獲取寬和放大係數
if (!((i & 1) == 0))
{
//_Pen = new Pen(Brushes.White, _ValueNumb);
_Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, _ValueNumb, (int)m_Height));
}
else
{
//_Pen = new Pen(Brushes.Black, _ValueNumb);
_Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, _ValueNumb, (int)m_Height));
}
//_Garphics.(_Pen, new Point(_LenEx, 0), new Point(_LenEx, m_Height));
_LenEx += _ValueNumb;
}
_Garphics.Dispose();
return _CodeImage;
}
/// <summary>
/// 顯示可見條碼文字 如果小於40 不顯示文字
/// </summary>
/// <param name="p_Bitmap">圖形</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);
}
}
}