.NET 绘制 EAN13 （商品条码）

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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

1. //获取验证位
2. char _ISBN=MyImage.BandCode.EAN13.EAN13ISBN( "690102803695" );
3. MessageBox.Show(_ISBN.ToString());
4. MyImage.BandCode.EAN13_EAN13Code= new MyImage.BandCode.EAN13();
5. _EAN13Code.Magnify=1;
6. _EAN13Code.Heigth=100;
7. _EAN13Code.FontSize=16;
8. pictureBox1.Image=_EAN13Code.GetCodeImage( "6901028036955" );
9. pictureBox1.Image.Save(@ "C:/1.bmp" );

具体绘制类

1. using System;
2. using System.Collections;
3. using System.ComponentModel;
4. using System.Drawing;
5. using System.Data;
6. namespace MyImage.BandCode
7. {
8. public class EAN13
9. {
10. private DataTablem_EAN13= new DataTable();
11. public EAN13()
12. {
13. m_EAN13.Columns.Add( "ID" );
14. m_EAN13.Columns.Add( "Type" );
15. m_EAN13.Columns.Add( "A" );
16. m_EAN13.Columns.Add( "B" );
17. m_EAN13.Columns.Add( "C" );
18. m_EAN13.Rows.Add( "0" , "AAAAAA" , "0001101" , "0100111" , "1110010" );
19. m_EAN13.Rows.Add( "1" , "AABABB" , "0011001" , "0110011" , "1100110" );
20. m_EAN13.Rows.Add( "2" , "AABBAB" , "0010011" , "0011011" , "1101100" );
21. m_EAN13.Rows.Add( "3" , "AABBBA" , "0111101" , "0100001" , "1000010" );
22. m_EAN13.Rows.Add( "4" , "ABAABB" , "0100011" , "0011101" , "1011100" );
23. m_EAN13.Rows.Add( "5" , "ABBAAB" , "0110001" , "0111001" , "1001110" );
24. m_EAN13.Rows.Add( "6" , "ABBBAA" , "0101111" , "0000101" , "1010000" );
25. m_EAN13.Rows.Add( "7" , "ABABAB" , "0111011" , "0010001" , "1000100" );
26. m_EAN13.Rows.Add( "8" , "ABABBA" , "0110111" , "0001001" , "1001000" );
27. m_EAN13.Rows.Add( "9" , "ABBABA" , "0001011" , "0010111" , "1110100" );
28. }
29. private uint m_Height=40;
30. ///<summary>
31. ///绘制高
32. ///</summary>
33. public uint Heigth{ get { return m_Height;} set {m_Height=value;}}
34. private byte m_FontSize=0;
35. ///<summary>
36. ///字体大小（宋体）
37. ///</summary>
38. public byte FontSize{ get { return m_FontSize;} set {m_FontSize=value;}}
40. private byte m_Magnify=0;
41. ///<summary>
42. ///放大系数
43. ///</summary>
44. public byte Magnify{ get { return m_Magnify;} set {m_Magnify=value;}}
45. public BitmapGetCodeImage( string p_Text)
46. {
47. if (p_Text.Length!=13) throw new Exception( "数字不是13位!" );
48. string _CodeText=p_Text.Remove(0,1);
49. string _CodeIndex= "101" ;
50. char []_LeftType=GetValue(p_Text.Substring(0,1), "Type" ).ToCharArray();
51. for ( int i=0;i!=6;i++)
52. {
53. _CodeIndex+=GetValue(_CodeText.Substring(0,1),_LeftType[i].ToString());
54. _CodeText=_CodeText.Remove(0,1);
55. }
57. _CodeIndex+= "01010" ;
59. for ( int i=0;i!=6;i++)
60. {
61. _CodeIndex+=GetValue(_CodeText.Substring(0,1), "C" );
62. _CodeText=_CodeText.Remove(0,1);
63. }
64. _CodeIndex+= "101" ;
65. return GetImage(_CodeIndex,p_Text);
66. }
67. ///<summary>
68. ///获取目标对应的数据
69. ///</summary>
70. ///<paramname="p_Code">编码</param>
71. ///<paramname="p_Value">类型</param>
72. ///<returns>编码</returns>
73. private string GetValue( string p_Value, string p_Type)
74. {
75. if (m_EAN13== null ) return "" ;
76. DataRow[]_Row=m_EAN13.Select( "ID='" +p_Value+ "'" );
77. if (_Row.Length!=1) throw new Exception( "错误的编码" +p_Value.ToString());
78. return _Row[0][p_Type].ToString();
79. }
80. ///<summary>
81. ///绘制编码图形
82. ///</summary>
83. ///<paramname="p_Text">编码</param>
84. ///<returns>图形</returns>
85. private BitmapGetImage( string p_Text, string p_ViewText)
86. {
87. char []_Value=p_Text.ToCharArray();
88. int _FontWidth=0;
89. Font_MyFont= null ;
90. if (m_FontSize!=0)
91. {
92. #region获取符合大小的字体
93. _MyFont= new Font( "宋体" ,m_FontSize);
94. Bitmap_MyFontBmp= new Bitmap(m_FontSize,m_FontSize);
95. Graphics_FontGraphics=Graphics.FromImage(_MyFontBmp);
97. for ( byte i=m_FontSize;i!=0;i--)
98. {
99. SizeF_DrawSize=_FontGraphics.MeasureString(p_ViewText.Substring(0,1),_MyFont);
100. if (_DrawSize.Height>m_FontSize)
101. {
102. _MyFont= new Font( "宋体" ,i);
103. }
104. else
105. {
106. _FontWidth=( int )_DrawSize.Width;
107. break ;
108. }
109. }
110. #endregion
111. }
112. if (ScanDrawText(_MyFont,p_Text,_FontWidth)== false )
113. {
114. _FontWidth=0;
115. m_FontSize=0;
116. }
117. //宽==需要绘制的数量*放大倍数+两个字的宽
118. Bitmap_CodeImage= new Bitmap(_Value.Length*(( int )m_Magnify+1)+(_FontWidth*2),( int )m_Height);
119. Graphics_Garphics=Graphics.FromImage(_CodeImage);
120. _Garphics.FillRectangle(Brushes.White, new Rectangle(0,0,_CodeImage.Width,_CodeImage.Height));
122. int _Height=0;
123. int _LenEx=_FontWidth;
124. for ( int i=0;i!=_Value.Length;i++)
125. {
126. int _DrawWidth=m_Magnify+1;
127. if (i==0||i==2||i==46||i==48||i==92||i==94)
128. {
129. _Height=( int )m_Height;
130. }
131. else
132. {
133. _Height=( int )m_Height-m_FontSize;
134. }
135. if (_Value[i]== '1' )
136. {
137. _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx,0,_DrawWidth,_Height));
139. }
140. else
141. {
142. _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx,0,_DrawWidth,_Height));
143. }
144. _LenEx+=_DrawWidth;
145. }
146. //绘制文字
147. if (_FontWidth!=0&&m_FontSize!=0)
148. {
149. int _StarX=0;
150. int _StarY=( int )m_Height-_MyFont.Height;
151. _Garphics.DrawString(p_ViewText.Substring(0,1),_MyFont,Brushes.Black,0,_StarY);
152. _StarX=_FontWidth+(3*(m_Magnify+1));
153. _Garphics.DrawString(p_ViewText.Substring(1,6),_MyFont,Brushes.Black,_StarX,_StarY);
154. _StarX=_FontWidth+(50*(m_Magnify+1));
155. _Garphics.DrawString(p_ViewText.Substring(7,6),_MyFont,Brushes.Black,_StarX,_StarY);
156. }
157. _Garphics.Dispose();
158. return _CodeImage;
159. }
160. ///<summary>
161. ///判断字体是否大与绘制图形
162. ///</summary>
163. ///<paramname="_MyFont">字体</param>
164. ///<paramname="p_Text">文字</param>
165. ///<paramname="p_Width">字体的宽</param>
166. ///<returns>true可以绘制False不可以绘制</returns>
167. private bool ScanDrawText(Font_MyFont, string p_Text, int p_Width)
168. {
169. if (_MyFont== null ) return false ;
170. int _Width=(p_Text.Length-6-5)*(( int )m_Magnify+1);
171. if ((p_Width*12)>_Width) return false ;
172. return true ;
173. }
174. ///<summary>
175. ///获得条码的最后一位（验证位）
176. ///</summary>
177. ///<paramname="ANumbers">条码</param>
178. ///<returns></returns>
179. public static char EAN13ISBN( string _Numb)
180. {
181. int _Sum=0;
182. int _i=1; //权值
183. foreach ( char _Char in _Numb)
184. {
185. if ( "0123456789" .IndexOf(_Char)<0) continue ; //非数字
186. _Sum+=(_Char- '0' )*_i;
187. _i=_i==1?3:1;
188. }
189. return "01234567890" [10-_Sum%10];
190. }
192. }
193. }

剩下CODE39了 这个过几天再做把。