<script type="text/javascript"> </script> <script class="blogstory"> </script>
EAN商品条码的类
这个使用的比较多
其实 前面的编码是根据前面的6来判断的。是类型A还是类型B
效果
使用方法
//获取验证位 char _ISBN=MyImage.BandCode.EAN13.EAN13ISBN( "690102803695" ); MessageBox.Show(_ISBN.ToString()); MyImage.BandCode.EAN13 _EAN13Code = new MyImage.BandCode.EAN13(); _EAN13Code.Magnify = 1; _EAN13Code.Heigth = 100; _EAN13Code.FontSize = 16; pictureBox1.Image=_EAN13Code.GetCodeImage( "6901028036955" ); pictureBox1.Image.Save(@ "C:/1.bmp" );
具体绘制类
using System; using System.Collections; using System.ComponentModel; using System.Drawing; using System.Data; namespace MyImage.BandCode { public class EAN13 { private DataTable m_EAN13 = new DataTable(); public EAN13() { m_EAN13.Columns.Add( "ID" ); m_EAN13.Columns.Add( "Type" ); m_EAN13.Columns.Add( "A" ); m_EAN13.Columns.Add( "B" ); m_EAN13.Columns.Add( "C" ); m_EAN13.Rows.Add( "0" , "AAAAAA" , "0001101" , "0100111" , "1110010" ); m_EAN13.Rows.Add( "1" , "AABABB" , "0011001" , "0110011" , "1100110" ); m_EAN13.Rows.Add( "2" , "AABBAB" , "0010011" , "0011011" , "1101100" ); m_EAN13.Rows.Add( "3" , "AABBBA" , "0111101" , "0100001" , "1000010" ); m_EAN13.Rows.Add( "4" , "ABAABB" , "0100011" , "0011101" , "1011100" ); m_EAN13.Rows.Add( "5" , "ABBAAB" , "0110001" , "0111001" , "1001110" ); m_EAN13.Rows.Add( "6" , "ABBBAA" , "0101111" , "0000101" , "1010000" ); m_EAN13.Rows.Add( "7" , "ABABAB" , "0111011" , "0010001" , "1000100" ); m_EAN13.Rows.Add( "8" , "ABABBA" , "0110111" , "0001001" , "1001000" ); m_EAN13.Rows.Add( "9" , "ABBABA" , "0001011" , "0010111" , "1110100" ); } private uint m_Height = 40; /// <summary> /// 绘制高 /// </summary> public uint Heigth { get { return m_Height; } set { m_Height = value; } } private byte m_FontSize = 0; /// <summary> /// 字体大小（宋体） /// </summary> public byte FontSize { get { return m_FontSize; } set { m_FontSize = value; } } private byte m_Magnify = 0; /// <summary> /// 放大系数 /// </summary> public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } } public Bitmap GetCodeImage( string p_Text) { if (p_Text.Length != 13) throw new Exception( "数字不是13位!" ); string _CodeText = p_Text.Remove(0, 1); string _CodeIndex = "101" ; char [] _LeftType = GetValue(p_Text.Substring(0, 1), "Type" ).ToCharArray(); for ( int i = 0; i != 6; i++) { _CodeIndex += GetValue(_CodeText.Substring(0, 1), _LeftType[i].ToString()); _CodeText = _CodeText.Remove(0, 1); } _CodeIndex += "01010" ; for ( int i = 0; i != 6; i++) { _CodeIndex += GetValue(_CodeText.Substring(0, 1), "C" ); _CodeText = _CodeText.Remove(0, 1); } _CodeIndex += "101" ; return GetImage(_CodeIndex, p_Text); } /// <summary> /// 获取目标对应的数据 /// </summary> /// <param name="p_Code">编码</param> /// <param name="p_Value">类型</param> /// <returns>编码</returns> private string GetValue( string p_Value, string p_Type) { if (m_EAN13 == null ) return "" ; DataRow[] _Row = m_EAN13.Select( "ID='" + p_Value + "'" ); if (_Row.Length != 1) throw new Exception( "错误的编码" + p_Value.ToString()); return _Row[0][p_Type].ToString(); } /// <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, string p_ViewText) { char [] _Value = p_Text.ToCharArray(); int _FontWidth = 0; Font _MyFont = null ; if (m_FontSize != 0) { #region 获取符合大小的字体 _MyFont = new Font( "宋体" , m_FontSize); Bitmap _MyFontBmp = new Bitmap(m_FontSize, m_FontSize); Graphics _FontGraphics = Graphics.FromImage(_MyFontBmp); for ( byte i = m_FontSize; i != 0; i--) { SizeF _DrawSize = _FontGraphics.MeasureString(p_ViewText.Substring(0, 1), _MyFont); if (_DrawSize.Height > m_FontSize) { _MyFont = new Font( "宋体" , i); } else { _FontWidth = ( int )_DrawSize.Width; break ; } } #endregion } if (ScanDrawText(_MyFont, p_Text, _FontWidth) == false ) { _FontWidth = 0; m_FontSize = 0; } //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) + (_FontWidth * 2), ( int )m_Height); Graphics _Garphics = Graphics.FromImage(_CodeImage); _Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height)); int _Height = 0; int _LenEx = _FontWidth; for ( int i = 0; i != _Value.Length; i++) { int _DrawWidth = m_Magnify + 1; if (i == 0 || i == 2 || i==46 || i==48 || i==92 || i==94) { _Height = ( int )m_Height; } else { _Height = ( int )m_Height - m_FontSize; } if (_Value[i] == '1' ) { _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, _DrawWidth, _Height)); } else { _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, _DrawWidth, _Height)); } _LenEx += _DrawWidth; } //绘制文字 if (_FontWidth != 0 && m_FontSize != 0) { int _StarX = 0; int _StarY=( int )m_Height - _MyFont.Height; _Garphics.DrawString(p_ViewText.Substring(0, 1), _MyFont, Brushes.Black, 0, _StarY); _StarX = _FontWidth + (3 * (m_Magnify + 1)); _Garphics.DrawString(p_ViewText.Substring(1, 6), _MyFont, Brushes.Black, _StarX, _StarY); _StarX = _FontWidth + (50 * (m_Magnify + 1)); _Garphics.DrawString(p_ViewText.Substring(7, 6), _MyFont, Brushes.Black, _StarX, _StarY); } _Garphics.Dispose(); return _CodeImage; } /// <summary> /// 判断字体是否大与绘制图形 /// </summary> /// <param name="_MyFont">字体</param> /// <param name="p_Text">文字</param> /// <param name="p_Width">字体的宽</param> /// <returns>true可以绘制 False不可以绘制</returns> private bool ScanDrawText(Font _MyFont, string p_Text, int p_Width) { if (_MyFont== null ) return false ; int _Width = (p_Text.Length - 6 - 5) * (( int )m_Magnify + 1); if ((p_Width*12) > _Width) return false ; return true ; } /// <summary> /// 获得条码的最后一位（验证位） /// </summary> /// <param name="ANumbers">条码</param> /// <returns></returns> public static char EAN13ISBN( string _Numb) { int _Sum = 0; int _i = 1; //权值 foreach ( char _Char in _Numb) { if ( "0123456789" .IndexOf(_Char) < 0) continue ; // 非数字 _Sum += (_Char - '0' ) * _i; _i = _i == 1 ? 3 : 1; } return "01234567890" [10 - _Sum % 10]; } } }
剩下CODE39了 这个过几天再做把。
