EAN.CS
代码
1 /// <summary>
2 /// EAN 的摘要说明
3 /// </summary>
4 public class EAN
5 {
6 #region 属性
7 private DataTable m_EAN = new DataTable();
8 private DataTable m_Pic = new DataTable();
9
10 public EAN()
11 {
12 //编号
13 m_EAN.Columns.Add("ID");
14 //左边数据类型
15 m_EAN.Columns.Add("Type");
16 //左边数据奇数列
17 m_EAN.Columns.Add("A");
18 //左边数据偶数列
19 m_EAN.Columns.Add("B");
20 //右边数据偶数列
21 m_EAN.Columns.Add("C");
22
23
24 m_EAN.Rows.Add("0", "AAAAAA", "0001101", "0100111", "1110010");
25 m_EAN.Rows.Add("1", "AABABB", "0011001", "0110011", "1100110");
26 m_EAN.Rows.Add("2", "AABBAB", "0010011", "0011011", "1101100");
27 m_EAN.Rows.Add("3", "AABBBA", "0111101", "0100001", "1000010");
28 m_EAN.Rows.Add("4", "ABAABB", "0100011", "0011101", "1011100");
29 m_EAN.Rows.Add("5", "ABBAAB", "0110001", "0111001", "1001110");
30 m_EAN.Rows.Add("6", "ABBBAA", "0101111", "0000101", "1010000");
31 m_EAN.Rows.Add("7", "ABABAB", "0111011", "0010001", "1000100");
32 m_EAN.Rows.Add("8", "ABABBA", "0110111", "0001001", "1001000");
33 m_EAN.Rows.Add("9", "ABBABA", "0001011", "0010111", "1110100");
34
35 //编号,暂时只支持1.0X与2.0X,建议使用1.0X,因2.0X模块宽度可能无法识别
36 m_Pic.Columns.Add("ID");
37 //字号(像素)
38 m_Pic.Columns.Add("FontSize");
39 //图片宽度(像素)
40 m_Pic.Columns.Add("PicWidth");
41 //图片高度(像素)
42 m_Pic.Columns.Add("PicHeight");
43 //短条纹高度(像素)
44 m_Pic.Columns.Add("StreakHeight");
45 //模块宽度(像素)
46 m_Pic.Columns.Add("StreakWidth");
47
48 m_Pic.Rows.Add("0.8X", "10", "85", "59", "52","1");
49 m_Pic.Rows.Add("0.85X", "10", "90", "62", "55", "1");
50 m_Pic.Rows.Add("0.9X", "10", "95", "66", "58", "1");
51 m_Pic.Rows.Add("1.0X", "11", "113", "74", "65", "1");
52 m_Pic.Rows.Add("1.1X", "20", "116", "81", "71", "1");
53 m_Pic.Rows.Add("1.2X", "20", "127", "88", "78", "1");
54 m_Pic.Rows.Add("1.4X", "20", "148", "103", "91", "1");
55 m_Pic.Rows.Add("1.5X", "20", "159", "110", "97", "1");
56 m_Pic.Rows.Add("1.6X", "20", "169", "118", "104", "1");
57 m_Pic.Rows.Add("1.7X", "20", "180", "125", "110", "1");
58 m_Pic.Rows.Add("2.0X", "22", "226", "148", "130", "2");
59
60 }
61 //放大倍数
62 private string m_Magnify = "1.0X";
63 public string Magnify
64 {
65 get { return m_Magnify; }
66 set { m_Magnify = value; }
67 }
68 //图片高度
69 private int m_Height = 74;
70 public int Height {
71 get { return m_Height; }
72 set { m_Height = value; }
73 }
74 //图片宽度
75 private int m_Width = 113;
76 public int Width {
77 get { return m_Width; }
78 set { m_Width = value; }
79 }
80 //字体大小
81 private byte m_FontSize = 12;
82 public byte FontSize {
83 get { return m_FontSize; }
84 set { m_FontSize = value; }
85 }
86 //短条纹高度
87 private int m_StreakHeight = 65;
88 public int StreakHeight {
89 get { return m_StreakHeight; }
90 set { m_StreakHeight = value; }
91 }
92 //条纹宽度
93 private int m_StreakWidth = 1;
94 public int StreakWidth {
95 get { return m_StreakWidth; }
96 set { m_StreakWidth = value; }
97 }
98
99 #endregion
100
101 #region 方法
102 public Bitmap GetImageByCode(string Code)
103 {
104 char[] _int = Code.ToCharArray();
105 for (int i = 0; i < _int.Length; i++) {
106 try
107 {
108 int.Parse(_int[i].ToString());
109 }
110 catch {
111 throw new Exception("请输入12或13位数字");
112 }
113 }
114 //校验数据的有效性
115 if (Code.Length == 12)
116 {
117 Code = Code + GetCheckCode(Code);
118 }
119
120 if (Code.Length != 13 && Code.Length != 12)
121 {
122 throw new Exception("请输入12或13位数据");
123 }
124
125 //检测校验码是否正确
126 if (CheckCode(Code) == false) {
127 throw new Exception("校验码错误，请重新输入。");
128 }
129
130 //定入相关参数
131 string _Code = string.Empty;
132 string _HeadCode = string.Empty;
133 string _LeftCode = string.Empty;
134 string _RightCode = string.Empty;
135 string _EndCode = string.Empty;
136 StringBuilder Sb = new StringBuilder();
137
138
139 //前置码
140 _HeadCode = Code.Substring(0, 1);
141 _Code = Code.Remove(0, 1);
142 //左边空白符
143 Sb.Append("00000000000");
144 //起始行
145 Sb.Append("101");
146 //确定左边数据编码方式
147 char[] _LeftType = new char[] { };
148 _LeftType = GetEANValue(Code.Substring(0, 1), "Type").ToCharArray();
149 //左边数据符号
150 _LeftCode = _Code.Substring(0, 6);
151 _Code = _Code.Remove(0, 6);
152 for (int i = 0; i < _LeftCode.Length; i++) {
153 Sb.Append(GetEANValue(_LeftCode.Substring(0, 1), _LeftType[i].ToString()));
154 _LeftCode.Remove(0, 1);
155 }
156 //中间分隔符
157 Sb.Append("01010");
158 //右边数据符
159 _RightCode = _Code.Substring(0, 5);
160 _Code = _Code.Remove(0, 5);
161 for (int i = 0; i < _RightCode.Length; i++)
162 {
163 Sb.Append(GetEANValue(_RightCode.Substring(0, 1), "C"));
164 _RightCode.Remove(0, 1);
165 }
166 //校验符
167 _EndCode = _Code.Substring(0, 1);
168 Sb.Append(GetEANValue(_EndCode, "C"));
169 //终止符
170 Sb.Append("101");
171 //右边空白符
172 Sb.Append("0000000");
173 //绘制图形
174 return GetImage(Sb.ToString(),Code);
175 }
176
177 private string GetEANValue(string p_Value, string p_Type)
178 {
179 if (m_EAN == null) return "";
180 DataRow[] _Row = m_EAN.Select("ID='" + p_Value + "'");
181 if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());
182 return _Row[0][p_Type].ToString();
183 }
184
185 private string GetPicValue(string p_Value, string p_Type)
186 {
187 if (m_Pic == null) return "";
188 DataRow[] _Row = m_Pic.Select("ID='" + p_Value + "'");
189 if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());
190 return _Row[0][p_Type].ToString();
191 }
192
193
194 //绘制图形
195 private Bitmap GetImage(string p_Text,string p_ViewText)
196 {
197 char[] _Value = p_Text.ToCharArray();
198 int _FontWidth = 0;
199 Font _MyFont = null;
200
201
202 //根据倍数确定图片长宽、条纹高度、字体大小
203 if (m_Magnify != "1.0X") {
204 m_Height = int.Parse(GetPicValue(m_Magnify, "PicHeight"));
205 m_Width = int.Parse(GetPicValue(m_Magnify, "PicWidth"));
206 m_FontSize = byte.Parse(GetPicValue(m_Magnify, "FontSize"));
207 m_StreakHeight = int.Parse(GetPicValue(m_Magnify, "StreakHeight"));
208 m_StreakWidth = int.Parse(GetPicValue(m_Magnify, "StreakWidth"));
209 }
210
211
212
213 if (m_FontSize != 0)
214 {
215 #region 获取符合大小的字体
216 _MyFont = new Font("OCR-B", m_FontSize, FontStyle.Bold);
217 Bitmap _MyFontBmp = new Bitmap(m_FontSize, m_FontSize);
218 Graphics _FontGraphics = Graphics.FromImage(_MyFontBmp);
219
220 for (byte i = m_FontSize; i != 0; i--)
221 {
222 SizeF _DrawSize = _FontGraphics.MeasureString(p_ViewText.Substring(0, 1), _MyFont);
223
224 if (_DrawSize.Height > m_FontSize)
225 {
226 _MyFont = new Font("OCR-B", i, FontStyle.Bold);
227 }
228 else
229 {
230 _FontWidth = (int)_DrawSize.Width;
231 break;
232 }
233 }
234 #endregion
235 }
236
237 if (ScanDrawText(_MyFont, p_Text, _FontWidth) == false)
238 {
239 _FontWidth = 0;
240 m_FontSize = 0;
241 }
242
243 //宽 == 需要绘制的数量*放大倍数 + 两个字的宽
244 //Bitmap _CodeImage = new Bitmap(_Value.Length * ((int)m_Magnify + 1) + (_FontWidth * 2), m_Height);
245 //Graphics _Garphics = Graphics.FromImage(_CodeImage);
246
247 //_Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height));
248
249 Bitmap _CodeImage = new Bitmap(m_Width, m_Height);
250 Graphics _Garphics = Graphics.FromImage(_CodeImage);
251 _Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height));
252
253 //输出条形
254 int _Height = 0;
255 int _LenEx = 0;
256 for (int i = 0; i != _Value.Length; i++)
257 {
258 if (i == 11 || i == 13 || i==57 || i==59 || i==103 || i==105)
259 {
260 _Height = m_Height;
261 }
262 else
263 {
264 _Height = m_StreakHeight;
265 }
266
267 if (_Value[i] == '1')
268 {
269 _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, m_StreakWidth, _Height));
270
271 }
272 else
273 {
274 _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, m_StreakWidth, _Height));
275 }
276 _LenEx += m_StreakWidth;
277 }
278
279 //绘制文字
280 if (_FontWidth != 0 && m_FontSize != 0)
281 {
282 int _StarX = 0;
283 int _StarY = m_Height - _MyFont.Height;
284 _Garphics.DrawString(p_ViewText.Substring(0, 1), _MyFont, Brushes.Black, 0, _StarY);
285 for (int i = 0; i < 6; i++)
286 {
287 _StarX = i * m_StreakWidth * 7 + m_StreakWidth * (11 + 3);
288 _Garphics.DrawString(p_ViewText.Substring(i + 1, 1), _MyFont, Brushes.Black, _StarX, _StarY);
289 }
290 for (int i = 0; i < 6; i++)
291 {
292 _StarX = i * m_StreakWidth * 7 + m_StreakWidth * (11 + 3 + 42 + 5);
293 _Garphics.DrawString(p_ViewText.Substring(7+i, 1), _MyFont, Brushes.Black, _StarX, _StarY);
294 }
295 //输出结束符>
296 _StarX = m_StreakWidth * 105;
297 _Garphics.DrawString(">", _MyFont, Brushes.Black, _StarX, _StarY);
298 }
299
300
301 _Garphics.Dispose();
302 return _CodeImage;
303 }
304 /// <summary>
305 /// 判断字体是否大与绘制图形
306 /// </summary>
307 /// <param name="_MyFont">字体</param>
308 /// <param name="p_Text">文字</param>
309 /// <param name="p_Width">字体的宽</param>
310 /// <returns>true可以绘制 False不可以绘制</returns>
311 private bool ScanDrawText(Font _MyFont,string p_Text,int p_Width)
312 {
313 //if(_MyFont==null)return false;
314 //int _Width = (p_Text.Length - 6 - 5) * ((int)m_Magnify + 1);
315 //if ((p_Width*12) > _Width) return false;
316 return true;
317
318 }
319
320 /// <summary>
321 /// 检测校验码是否正确
322 /// </summary>
323 /// <param name="Code">校验码</param>
324 /// <returns>正确与否</returns>
325 private bool CheckCode(string Code) {
326 if (Code.Length == 13)
327 {
328 string _Code = Code.Substring(0, 12);
329 int _verifyCode = int.Parse(GetCheckCode(_Code));
330 if (_verifyCode == int.Parse(Code.Substring(12, 1)))
331 {
332 return true;
333 }
334 else
335 {
336 return false;
337 }
338 }
339 else {
340 return false;
341 }
342 }
343
344
345 /// <summary>
346 /// 获取EAN13Code校验码
347 /// </summary>
348 /// <param name="Code">EAN13Code前12位码</param>
349 /// <returns>EAN13Code校验码</returns>
350 private string GetCheckCode(string Code) {
351 if (Code.Length != 12)
352 {
353 return "";
354 }
355 else {
356 //奇位数之和
357 int _oddNum = 0;
358 //偶位数之和
359 int _evenNum = 0;
360 for (int i = 0; i < Code.Length; i++)
361 {
362 if ((i + 1) % 2 == 0)
363 {
364 _oddNum += int.Parse(Code.Substring(i, 1));
365 }
366 else
367 {
368 _evenNum += int.Parse(Code.Substring(i, 1));
369 }
370 }
371 int _verifyCode = 10 - ((_oddNum * 3 + _evenNum) > 100 ? ((_oddNum * 3 + _evenNum) % 100) % 10 : (_oddNum * 3 + _evenNum) % 10);
372 return _verifyCode.ToString();
373 }
374
375
376 }
377 #endregion
378 }
2 /// EAN 的摘要说明
3 /// </summary>
4 public class EAN
5 {
6 #region 属性
7 private DataTable m_EAN = new DataTable();
8 private DataTable m_Pic = new DataTable();
9
10 public EAN()
11 {
12 //编号
13 m_EAN.Columns.Add("ID");
14 //左边数据类型
15 m_EAN.Columns.Add("Type");
16 //左边数据奇数列
17 m_EAN.Columns.Add("A");
18 //左边数据偶数列
19 m_EAN.Columns.Add("B");
20 //右边数据偶数列
21 m_EAN.Columns.Add("C");
22
23
24 m_EAN.Rows.Add("0", "AAAAAA", "0001101", "0100111", "1110010");
25 m_EAN.Rows.Add("1", "AABABB", "0011001", "0110011", "1100110");
26 m_EAN.Rows.Add("2", "AABBAB", "0010011", "0011011", "1101100");
27 m_EAN.Rows.Add("3", "AABBBA", "0111101", "0100001", "1000010");
28 m_EAN.Rows.Add("4", "ABAABB", "0100011", "0011101", "1011100");
29 m_EAN.Rows.Add("5", "ABBAAB", "0110001", "0111001", "1001110");
30 m_EAN.Rows.Add("6", "ABBBAA", "0101111", "0000101", "1010000");
31 m_EAN.Rows.Add("7", "ABABAB", "0111011", "0010001", "1000100");
32 m_EAN.Rows.Add("8", "ABABBA", "0110111", "0001001", "1001000");
33 m_EAN.Rows.Add("9", "ABBABA", "0001011", "0010111", "1110100");
34
35 //编号,暂时只支持1.0X与2.0X,建议使用1.0X,因2.0X模块宽度可能无法识别
36 m_Pic.Columns.Add("ID");
37 //字号(像素)
38 m_Pic.Columns.Add("FontSize");
39 //图片宽度(像素)
40 m_Pic.Columns.Add("PicWidth");
41 //图片高度(像素)
42 m_Pic.Columns.Add("PicHeight");
43 //短条纹高度(像素)
44 m_Pic.Columns.Add("StreakHeight");
45 //模块宽度(像素)
46 m_Pic.Columns.Add("StreakWidth");
47
48 m_Pic.Rows.Add("0.8X", "10", "85", "59", "52","1");
49 m_Pic.Rows.Add("0.85X", "10", "90", "62", "55", "1");
50 m_Pic.Rows.Add("0.9X", "10", "95", "66", "58", "1");
51 m_Pic.Rows.Add("1.0X", "11", "113", "74", "65", "1");
52 m_Pic.Rows.Add("1.1X", "20", "116", "81", "71", "1");
53 m_Pic.Rows.Add("1.2X", "20", "127", "88", "78", "1");
54 m_Pic.Rows.Add("1.4X", "20", "148", "103", "91", "1");
55 m_Pic.Rows.Add("1.5X", "20", "159", "110", "97", "1");
56 m_Pic.Rows.Add("1.6X", "20", "169", "118", "104", "1");
57 m_Pic.Rows.Add("1.7X", "20", "180", "125", "110", "1");
58 m_Pic.Rows.Add("2.0X", "22", "226", "148", "130", "2");
59
60 }
61 //放大倍数
62 private string m_Magnify = "1.0X";
63 public string Magnify
64 {
65 get { return m_Magnify; }
66 set { m_Magnify = value; }
67 }
68 //图片高度
69 private int m_Height = 74;
70 public int Height {
71 get { return m_Height; }
72 set { m_Height = value; }
73 }
74 //图片宽度
75 private int m_Width = 113;
76 public int Width {
77 get { return m_Width; }
78 set { m_Width = value; }
79 }
80 //字体大小
81 private byte m_FontSize = 12;
82 public byte FontSize {
83 get { return m_FontSize; }
84 set { m_FontSize = value; }
85 }
86 //短条纹高度
87 private int m_StreakHeight = 65;
88 public int StreakHeight {
89 get { return m_StreakHeight; }
90 set { m_StreakHeight = value; }
91 }
92 //条纹宽度
93 private int m_StreakWidth = 1;
94 public int StreakWidth {
95 get { return m_StreakWidth; }
96 set { m_StreakWidth = value; }
97 }
98
99 #endregion
100
101 #region 方法
102 public Bitmap GetImageByCode(string Code)
103 {
104 char[] _int = Code.ToCharArray();
105 for (int i = 0; i < _int.Length; i++) {
106 try
107 {
108 int.Parse(_int[i].ToString());
109 }
110 catch {
111 throw new Exception("请输入12或13位数字");
112 }
113 }
114 //校验数据的有效性
115 if (Code.Length == 12)
116 {
117 Code = Code + GetCheckCode(Code);
118 }
119
120 if (Code.Length != 13 && Code.Length != 12)
121 {
122 throw new Exception("请输入12或13位数据");
123 }
124
125 //检测校验码是否正确
126 if (CheckCode(Code) == false) {
127 throw new Exception("校验码错误，请重新输入。");
128 }
129
130 //定入相关参数
131 string _Code = string.Empty;
132 string _HeadCode = string.Empty;
133 string _LeftCode = string.Empty;
134 string _RightCode = string.Empty;
135 string _EndCode = string.Empty;
136 StringBuilder Sb = new StringBuilder();
137
138
139 //前置码
140 _HeadCode = Code.Substring(0, 1);
141 _Code = Code.Remove(0, 1);
142 //左边空白符
143 Sb.Append("00000000000");
144 //起始行
145 Sb.Append("101");
146 //确定左边数据编码方式
147 char[] _LeftType = new char[] { };
148 _LeftType = GetEANValue(Code.Substring(0, 1), "Type").ToCharArray();
149 //左边数据符号
150 _LeftCode = _Code.Substring(0, 6);
151 _Code = _Code.Remove(0, 6);
152 for (int i = 0; i < _LeftCode.Length; i++) {
153 Sb.Append(GetEANValue(_LeftCode.Substring(0, 1), _LeftType[i].ToString()));
154 _LeftCode.Remove(0, 1);
155 }
156 //中间分隔符
157 Sb.Append("01010");
158 //右边数据符
159 _RightCode = _Code.Substring(0, 5);
160 _Code = _Code.Remove(0, 5);
161 for (int i = 0; i < _RightCode.Length; i++)
162 {
163 Sb.Append(GetEANValue(_RightCode.Substring(0, 1), "C"));
164 _RightCode.Remove(0, 1);
165 }
166 //校验符
167 _EndCode = _Code.Substring(0, 1);
168 Sb.Append(GetEANValue(_EndCode, "C"));
169 //终止符
170 Sb.Append("101");
171 //右边空白符
172 Sb.Append("0000000");
173 //绘制图形
174 return GetImage(Sb.ToString(),Code);
175 }
176
177 private string GetEANValue(string p_Value, string p_Type)
178 {
179 if (m_EAN == null) return "";
180 DataRow[] _Row = m_EAN.Select("ID='" + p_Value + "'");
181 if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());
182 return _Row[0][p_Type].ToString();
183 }
184
185 private string GetPicValue(string p_Value, string p_Type)
186 {
187 if (m_Pic == null) return "";
188 DataRow[] _Row = m_Pic.Select("ID='" + p_Value + "'");
189 if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());
190 return _Row[0][p_Type].ToString();
191 }
192
193
194 //绘制图形
195 private Bitmap GetImage(string p_Text,string p_ViewText)
196 {
197 char[] _Value = p_Text.ToCharArray();
198 int _FontWidth = 0;
199 Font _MyFont = null;
200
201
202 //根据倍数确定图片长宽、条纹高度、字体大小
203 if (m_Magnify != "1.0X") {
204 m_Height = int.Parse(GetPicValue(m_Magnify, "PicHeight"));
205 m_Width = int.Parse(GetPicValue(m_Magnify, "PicWidth"));
206 m_FontSize = byte.Parse(GetPicValue(m_Magnify, "FontSize"));
207 m_StreakHeight = int.Parse(GetPicValue(m_Magnify, "StreakHeight"));
208 m_StreakWidth = int.Parse(GetPicValue(m_Magnify, "StreakWidth"));
209 }
210
211
212
213 if (m_FontSize != 0)
214 {
215 #region 获取符合大小的字体
216 _MyFont = new Font("OCR-B", m_FontSize, FontStyle.Bold);
217 Bitmap _MyFontBmp = new Bitmap(m_FontSize, m_FontSize);
218 Graphics _FontGraphics = Graphics.FromImage(_MyFontBmp);
219
220 for (byte i = m_FontSize; i != 0; i--)
221 {
222 SizeF _DrawSize = _FontGraphics.MeasureString(p_ViewText.Substring(0, 1), _MyFont);
223
224 if (_DrawSize.Height > m_FontSize)
225 {
226 _MyFont = new Font("OCR-B", i, FontStyle.Bold);
227 }
228 else
229 {
230 _FontWidth = (int)_DrawSize.Width;
231 break;
232 }
233 }
234 #endregion
235 }
236
237 if (ScanDrawText(_MyFont, p_Text, _FontWidth) == false)
238 {
239 _FontWidth = 0;
240 m_FontSize = 0;
241 }
242
243 //宽 == 需要绘制的数量*放大倍数 + 两个字的宽
244 //Bitmap _CodeImage = new Bitmap(_Value.Length * ((int)m_Magnify + 1) + (_FontWidth * 2), m_Height);
245 //Graphics _Garphics = Graphics.FromImage(_CodeImage);
246
247 //_Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height));
248
249 Bitmap _CodeImage = new Bitmap(m_Width, m_Height);
250 Graphics _Garphics = Graphics.FromImage(_CodeImage);
251 _Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height));
252
253 //输出条形
254 int _Height = 0;
255 int _LenEx = 0;
256 for (int i = 0; i != _Value.Length; i++)
257 {
258 if (i == 11 || i == 13 || i==57 || i==59 || i==103 || i==105)
259 {
260 _Height = m_Height;
261 }
262 else
263 {
264 _Height = m_StreakHeight;
265 }
266
267 if (_Value[i] == '1')
268 {
269 _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, m_StreakWidth, _Height));
270
271 }
272 else
273 {
274 _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, m_StreakWidth, _Height));
275 }
276 _LenEx += m_StreakWidth;
277 }
278
279 //绘制文字
280 if (_FontWidth != 0 && m_FontSize != 0)
281 {
282 int _StarX = 0;
283 int _StarY = m_Height - _MyFont.Height;
284 _Garphics.DrawString(p_ViewText.Substring(0, 1), _MyFont, Brushes.Black, 0, _StarY);
285 for (int i = 0; i < 6; i++)
286 {
287 _StarX = i * m_StreakWidth * 7 + m_StreakWidth * (11 + 3);
288 _Garphics.DrawString(p_ViewText.Substring(i + 1, 1), _MyFont, Brushes.Black, _StarX, _StarY);
289 }
290 for (int i = 0; i < 6; i++)
291 {
292 _StarX = i * m_StreakWidth * 7 + m_StreakWidth * (11 + 3 + 42 + 5);
293 _Garphics.DrawString(p_ViewText.Substring(7+i, 1), _MyFont, Brushes.Black, _StarX, _StarY);
294 }
295 //输出结束符>
296 _StarX = m_StreakWidth * 105;
297 _Garphics.DrawString(">", _MyFont, Brushes.Black, _StarX, _StarY);
298 }
299
300
301 _Garphics.Dispose();
302 return _CodeImage;
303 }
304 /// <summary>
305 /// 判断字体是否大与绘制图形
306 /// </summary>
307 /// <param name="_MyFont">字体</param>
308 /// <param name="p_Text">文字</param>
309 /// <param name="p_Width">字体的宽</param>
310 /// <returns>true可以绘制 False不可以绘制</returns>
311 private bool ScanDrawText(Font _MyFont,string p_Text,int p_Width)
312 {
313 //if(_MyFont==null)return false;
314 //int _Width = (p_Text.Length - 6 - 5) * ((int)m_Magnify + 1);
315 //if ((p_Width*12) > _Width) return false;
316 return true;
317
318 }
319
320 /// <summary>
321 /// 检测校验码是否正确
322 /// </summary>
323 /// <param name="Code">校验码</param>
324 /// <returns>正确与否</returns>
325 private bool CheckCode(string Code) {
326 if (Code.Length == 13)
327 {
328 string _Code = Code.Substring(0, 12);
329 int _verifyCode = int.Parse(GetCheckCode(_Code));
330 if (_verifyCode == int.Parse(Code.Substring(12, 1)))
331 {
332 return true;
333 }
334 else
335 {
336 return false;
337 }
338 }
339 else {
340 return false;
341 }
342 }
343
344
345 /// <summary>
346 /// 获取EAN13Code校验码
347 /// </summary>
348 /// <param name="Code">EAN13Code前12位码</param>
349 /// <returns>EAN13Code校验码</returns>
350 private string GetCheckCode(string Code) {
351 if (Code.Length != 12)
352 {
353 return "";
354 }
355 else {
356 //奇位数之和
357 int _oddNum = 0;
358 //偶位数之和
359 int _evenNum = 0;
360 for (int i = 0; i < Code.Length; i++)
361 {
362 if ((i + 1) % 2 == 0)
363 {
364 _oddNum += int.Parse(Code.Substring(i, 1));
365 }
366 else
367 {
368 _evenNum += int.Parse(Code.Substring(i, 1));
369 }
370 }
371 int _verifyCode = 10 - ((_oddNum * 3 + _evenNum) > 100 ? ((_oddNum * 3 + _evenNum) % 100) % 10 : (_oddNum * 3 + _evenNum) % 10);
372 return _verifyCode.ToString();
373 }
374
375
376 }
377 #endregion
378 }
前台
<asp:DropDownList ID="DropDownList1" runat="server">
<asp:ListItem>1.0X</asp:ListItem>
<asp:ListItem>2.0X</asp:ListItem>
</asp:DropDownList>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="生成EAN13条形码" />
<br />
<br />
PS:输入12位或13位数字<br />
12位则自动生成校验码.13位会验证校验码是否正确<br />
事件
protected void Button1_Click(object sender, EventArgs e)
{
EAN _EANCode = new EAN();
_EANCode.Magnify = DropDownList1.SelectedValue;
Bitmap aa = _EANCode.GetImageByCode(TextBox1.Text.Trim());
Response.ContentType = "image/jpeg";
aa.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
aa.Dispose();
//aa.Save(@"C:\1.bmp");
}
