C# 二维码、条形码生成
1.工具类：BarCodeHelper（条码生成类），二维码生成类（QRCodeHelper）
2.BarCodeHelper（条码生成类）代码：
1 public class BarCodeHelper
2 {
3 public class Code128
4 {
5 private readonly DataTable _mCode128 = new DataTable();
6 private uint _mHeight = 40;
7
8 /// <summary>
9 /// 高度
10 /// </summary>
11 public uint Height { get { return _mHeight; } set { _mHeight = value; } }
12 private Font _mValueFont;
13
14 /// <summary>
15 /// 是否显示可见号码 如果为NULL不显示号码
16 /// </summary>
17 public Font ValueFont { get { return _mValueFont; } set { _mValueFont = value; } }
18 private byte _mMagnify;
19
20 /// <summary>
21 /// 放大倍数
22 /// </summary>
23 public byte Magnify { get { return _mMagnify; } set { _mMagnify = value; } }
24
25 /// <summary>
26 /// 条码类别
27 /// </summary>
28 public enum Encode
29 {
30 Code128A,
31 Code128B,
32 Code128C,
33 Ean128
34 }
35
36 public Code128()
37 {
38 _mCode128.Columns.Add("ID");
39 _mCode128.Columns.Add("Code128A");
40 _mCode128.Columns.Add("Code128B");
41 _mCode128.Columns.Add("Code128C");
42 _mCode128.Columns.Add("BandCode");
43 _mCode128.CaseSensitive = true;
44 #region 数据表
45 _mCode128.Rows.Add("0", " ", " ", "00", "212222");
46 _mCode128.Rows.Add("1", "!", "!", "01", "222122");
47 _mCode128.Rows.Add("2", "\"", "\"", "02", "222221");
48 _mCode128.Rows.Add("3", "#", "#", "03", "121223");
49 _mCode128.Rows.Add("4", "$", "$", "04", "121322");
50 _mCode128.Rows.Add("5", "%", "%", "05", "131222");
51 _mCode128.Rows.Add("6", "&", "&", "06", "122213");
52 _mCode128.Rows.Add("7", "'", "'", "07", "122312");
53 _mCode128.Rows.Add("8", "(", "(", "08", "132212");
54 _mCode128.Rows.Add("9", ")", ")", "09", "221213");
55 _mCode128.Rows.Add("10", "*", "*", "10", "221312");
56 _mCode128.Rows.Add("11", "+", "+", "11", "231212");
57 _mCode128.Rows.Add("12", ",", ",", "12", "112232");
58 _mCode128.Rows.Add("13", "-", "-", "13", "122132");
59 _mCode128.Rows.Add("14", ".", ".", "14", "122231");
60 _mCode128.Rows.Add("15", "/", "/", "15", "113222");
61 _mCode128.Rows.Add("16", "0", "0", "16", "123122");
62 _mCode128.Rows.Add("17", "1", "1", "17", "123221");
63 _mCode128.Rows.Add("18", "2", "2", "18", "223211");
64 _mCode128.Rows.Add("19", "3", "3", "19", "221132");
65 _mCode128.Rows.Add("20", "4", "4", "20", "221231");
66 _mCode128.Rows.Add("21", "5", "5", "21", "213212");
67 _mCode128.Rows.Add("22", "6", "6", "22", "223112");
68 _mCode128.Rows.Add("23", "7", "7", "23", "312131");
69 _mCode128.Rows.Add("24", "8", "8", "24", "311222");
70 _mCode128.Rows.Add("25", "9", "9", "25", "321122");
71 _mCode128.Rows.Add("26", ":", ":", "26", "321221");
72 _mCode128.Rows.Add("27", ";", ";", "27", "312212");
73 _mCode128.Rows.Add("28", "<", "<", "28", "322112");
74 _mCode128.Rows.Add("29", "=", "=", "29", "322211");
75 _mCode128.Rows.Add("30", ">", ">", "30", "212123");
76 _mCode128.Rows.Add("31", "?", "?", "31", "212321");
77 _mCode128.Rows.Add("32", "@", "@", "32", "232121");
78 _mCode128.Rows.Add("33", "A", "A", "33", "111323");
79 _mCode128.Rows.Add("34", "B", "B", "34", "131123");
80 _mCode128.Rows.Add("35", "C", "C", "35", "131321");
81 _mCode128.Rows.Add("36", "D", "D", "36", "112313");
82 _mCode128.Rows.Add("37", "E", "E", "37", "132113");
83 _mCode128.Rows.Add("38", "F", "F", "38", "132311");
84 _mCode128.Rows.Add("39", "G", "G", "39", "211313");
85 _mCode128.Rows.Add("40", "H", "H", "40", "231113");
86 _mCode128.Rows.Add("41", "I", "I", "41", "231311");
87 _mCode128.Rows.Add("42", "J", "J", "42", "112133");
88 _mCode128.Rows.Add("43", "K", "K", "43", "112331");
89 _mCode128.Rows.Add("44", "L", "L", "44", "132131");
90 _mCode128.Rows.Add("45", "M", "M", "45", "113123");
91 _mCode128.Rows.Add("46", "N", "N", "46", "113321");
92 _mCode128.Rows.Add("47", "O", "O", "47", "133121");
93 _mCode128.Rows.Add("48", "P", "P", "48", "313121");
94 _mCode128.Rows.Add("49", "Q", "Q", "49", "211331");
95 _mCode128.Rows.Add("50", "R", "R", "50", "231131");
96 _mCode128.Rows.Add("51", "S", "S", "51", "213113");
97 _mCode128.Rows.Add("52", "T", "T", "52", "213311");
98 _mCode128.Rows.Add("53", "U", "U", "53", "213131");
99 _mCode128.Rows.Add("54", "V", "V", "54", "311123");
100 _mCode128.Rows.Add("55", "W", "W", "55", "311321");
101 _mCode128.Rows.Add("56", "X", "X", "56", "331121");
102 _mCode128.Rows.Add("57", "Y", "Y", "57", "312113");
103 _mCode128.Rows.Add("58", "Z", "Z", "58", "312311");
104 _mCode128.Rows.Add("59", "[", "[", "59", "332111");
105 _mCode128.Rows.Add("60", "\\", "\\", "60", "314111");
106 _mCode128.Rows.Add("61", "]", "]", "61", "221411");
107 _mCode128.Rows.Add("62", "^", "^", "62", "431111");
108 _mCode128.Rows.Add("63", "_", "_", "63", "111224");
109 _mCode128.Rows.Add("64", "NUL", "`", "64", "111422");
110 _mCode128.Rows.Add("65", "SOH", "a", "65", "121124");
111 _mCode128.Rows.Add("66", "STX", "b", "66", "121421");
112 _mCode128.Rows.Add("67", "ETX", "c", "67", "141122");
113 _mCode128.Rows.Add("68", "EOT", "d", "68", "141221");
114 _mCode128.Rows.Add("69", "ENQ", "e", "69", "112214");
115 _mCode128.Rows.Add("70", "ACK", "f", "70", "112412");
116 _mCode128.Rows.Add("71", "BEL", "g", "71", "122114");
117 _mCode128.Rows.Add("72", "BS", "h", "72", "122411");
118 _mCode128.Rows.Add("73", "HT", "i", "73", "142112");
119 _mCode128.Rows.Add("74", "LF", "j", "74", "142211");
120 _mCode128.Rows.Add("75", "VT", "k", "75", "241211");
121 _mCode128.Rows.Add("76", "FF", "I", "76", "221114");
122 _mCode128.Rows.Add("77", "CR", "m", "77", "413111");
123 _mCode128.Rows.Add("78", "SO", "n", "78", "241112");
124 _mCode128.Rows.Add("79", "SI", "o", "79", "134111");
125 _mCode128.Rows.Add("80", "DLE", "p", "80", "111242");
126 _mCode128.Rows.Add("81", "DC1", "q", "81", "121142");
127 _mCode128.Rows.Add("82", "DC2", "r", "82", "121241");
128 _mCode128.Rows.Add("83", "DC3", "s", "83", "114212");
129 _mCode128.Rows.Add("84", "DC4", "t", "84", "124112");
130 _mCode128.Rows.Add("85", "NAK", "u", "85", "124211");
131 _mCode128.Rows.Add("86", "SYN", "v", "86", "411212");
132 _mCode128.Rows.Add("87", "ETB", "w", "87", "421112");
133 _mCode128.Rows.Add("88", "CAN", "x", "88", "421211");
134 _mCode128.Rows.Add("89", "EM", "y", "89", "212141");
135 _mCode128.Rows.Add("90", "SUB", "z", "90", "214121");
136 _mCode128.Rows.Add("91", "ESC", "{", "91", "412121");
137 _mCode128.Rows.Add("92", "FS", "|", "92", "111143");
138 _mCode128.Rows.Add("93", "GS", "}", "93", "111341");
139 _mCode128.Rows.Add("94", "RS", "~", "94", "131141");
140 _mCode128.Rows.Add("95", "US", "DEL", "95", "114113");
141 _mCode128.Rows.Add("96", "FNC3", "FNC3", "96", "114311");
142 _mCode128.Rows.Add("97", "FNC2", "FNC2", "97", "411113");
143 _mCode128.Rows.Add("98", "SHIFT", "SHIFT", "98", "411311");
144 _mCode128.Rows.Add("99", "CODEC", "CODEC", "99", "113141");
145 _mCode128.Rows.Add("100", "CODEB", "FNC4", "CODEB", "114131");
146 _mCode128.Rows.Add("101", "FNC4", "CODEA", "CODEA", "311141");
147 _mCode128.Rows.Add("102", "FNC1", "FNC1", "FNC1", "411131");
148 _mCode128.Rows.Add("103", "StartA", "StartA", "StartA", "211412");
149 _mCode128.Rows.Add("104", "StartB", "StartB", "StartB", "211214");
150 _mCode128.Rows.Add("105", "StartC", "StartC", "StartC", "211232");
151 _mCode128.Rows.Add("106", "Stop", "Stop", "Stop", "2331112");
152 #endregion
153 }
154
155 /// <summary>
156 /// 获取128图形
157 /// </summary>
158 /// <param name="pText">文字</param>
159 /// <param name="pCode">编码</param>
160 /// <returns>图形</returns>
161 public Bitmap GetCodeImage(string pText, Encode pCode)
162 {
163 string viewText = pText;
164 string text = "";
165 IList<int> textNumb = new List<int>();
166 int examine; //首位
167 switch (pCode)
168 {
169 case Encode.Code128C:
170 examine = 105;
171 if ((pText.Length & 1) != 0) throw new Exception("128C长度必须是偶数");
172 while (pText.Length != 0)
173 {
174 var temp = 0;
175 try
176 {
177 var codeNumb128 = Int32.Parse(pText.Substring(0, 2));
178 }
179 catch
180 {
181 throw new Exception("128C必须是数字！");
182 }
183 text += GetValue(pCode, pText.Substring(0, 2), ref temp);
184 textNumb.Add(temp);
185 pText = pText.Remove(0, 2);
186 }
187 break;
188 case Encode.Ean128:
189 examine = 105;
190 if ((pText.Length & 1) != 0) throw new Exception("EAN128长度必须是偶数");
191 textNumb.Add(102);
192 text += "411131";
193 while (pText.Length != 0)
194 {
195 var temp = 0;
196 try
197 {
198 var codeNumb128 = Int32.Parse(pText.Substring(0, 2));
199 }
200 catch
201 {
202 throw new Exception("128C必须是数字！");
203 }
204 text += GetValue(Encode.Code128C, pText.Substring(0, 2), ref temp);
205 textNumb.Add(temp);
206 pText = pText.Remove(0, 2);
207 }
208 break;
209 default:
210 examine = pCode == Encode.Code128A ? 103 : 104;
211
212 while (pText.Length != 0)
213 {
214 var temp = 0;
215 var valueCode = GetValue(pCode, pText.Substring(0, 1), ref temp);
216 if (valueCode.Length == 0) throw new Exception("无效的字符集!" + pText.Substring(0, 1));
217 text += valueCode;
218 textNumb.Add(temp);
219 pText = pText.Remove(0, 1);
220 }
221 break;
222 }
223 if (textNumb.Count == 0) throw new Exception("错误的编码,无数据");
224 text = text.Insert(0, GetValue(examine)); //获取开始位
225
226 for (int i = 0; i != textNumb.Count; i++)
227 {
228 examine += textNumb[i] * (i + 1);
229 }
230 examine = examine % 103; //获得严效位
231 text += GetValue(examine); //获取严效位
232 text += "2331112"; //结束位
233 var codeImage = GetImage(text);
234 GetViewText(codeImage, viewText);
235 return codeImage;
236 }
237
238 /// <summary>
239 /// 获取目标对应的数据
240 /// </summary>
241 /// <param name="pCode">编码</param>
242 /// <param name="pValue">数值 A b 30</param>
243 /// <param name="pSetId">返回编号</param>
244 /// <returns>编码</returns>
245 private string GetValue(Encode pCode, string pValue, ref int pSetId)
246 {
247 if (_mCode128 == null) return "";
248 var row = _mCode128.Select(pCode + "='" + pValue + "'");
249 if (row.Length != 1) throw new Exception("错误的编码" + pValue);
250 pSetId = Int32.Parse(row[0]["ID"].ToString());
251 return row[0]["BandCode"].ToString();
252 }
253
254 /// <summary>
255 /// 根据编号获得条纹
256 /// </summary>
257 /// <param name="pCodeId"></param>
258 /// <returns></returns>
259 private string GetValue(int pCodeId)
260 {
261 var row = _mCode128.Select(" + pCodeId + "'");
262 if (row.Length != 1) throw new Exception("验效位的编码错误" + pCodeId);
263 return row[0]["BandCode"].ToString();
264 }
265
266 /// <summary>
267 /// 获得条码图形
268 /// </summary>
269 /// <param name="pText">文字</param>
270 /// <returns>图形</returns>
271 private Bitmap GetImage(string pText)
272 {
273 var value = pText.ToCharArray();
274 var width = 0;
275 for (int i = 0; i != value.Length; i++)
276 {
277 width += Int32.Parse(value[i].ToString(CultureInfo.InvariantCulture)) * (_mMagnify + 1);
278 }
279 var codeImage = new Bitmap(width, (int)_mHeight);
280 var garphics = Graphics.FromImage(codeImage);
281 //Pen _Pen;
282 var lenEx = 0;
283 for (int i = 0; i != value.Length; i++)
284 {
285 int valueNumb = Int32.Parse(value[i].ToString(CultureInfo.InvariantCulture)) * (_mMagnify + 1); //获取宽和放大系数
286 garphics.FillRectangle((i & 1) != 0 ? Brushes.White : Brushes.Black,
287 new Rectangle(lenEx, 0, valueNumb, (int)_mHeight));
288 //_Garphics.(_Pen, new Point(_LenEx, 0), new Point(_LenEx, m_Height));
289 lenEx += valueNumb;
290 }
291 garphics.Dispose();
292 return codeImage;
293 }
294
295 /// <summary>
296 /// 显示可见条码文字 如果小于40 不显示文字
297 /// </summary>
298 /// <param name="pBitmap">图形</param>
299 /// <param name="pViewText"></param>
300 private void GetViewText(Bitmap pBitmap, string pViewText)
301 {
302 if (_mValueFont == null) return;
303
304 Graphics graphics = Graphics.FromImage(pBitmap);
305 SizeF drawSize = graphics.MeasureString(pViewText, _mValueFont);
306 if (drawSize.Height > pBitmap.Height - 10 || drawSize.Width > pBitmap.Width)
307 {
308 graphics.Dispose();
309 return;
310 }
311
312 int starY = pBitmap.Height - (int)drawSize.Height;
313 graphics.FillRectangle(Brushes.White, new Rectangle(0, starY, pBitmap.Width, (int)drawSize.Height));
314 graphics.DrawString(pViewText, _mValueFont, Brushes.Black, 5, starY);
315 }
316 }
317 }3.二维码生成类（QRCodeHelper）引用：ThoughtWorks.QRCode.dll
1 public class QRCodeHelper
2 {
3 private System.Drawing.Printing.PrintPageEventArgs e;
4 private int Top = 20;//提供一个基准Top，用户不提供Top时，就取该Top，每次有内容增加都会刷新
5 private int Left = 20;//提供一个基准Left，用户不提供Left时，就取该Left
6 private int Interval = 5;//提供一个基准间隔值
7
8
9 #region 根据链接生成二维码
10 /// <summary>
11 /// 根据链接获取二维码
12 /// 所需参数：URL；距左Left值；距上Top值
13 /// 默认值：无
14 /// </summary>
15 /// <param name="url">链接</param
16 /// <param name="left">二维码：x</param>
17 /// <param name="top">二维码：y</param>
18 /// <returns>返回二维码图片的高度</returns>
19 public int DrawQRCodeBmp(string url, int left, int top)
20 {
21 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
22 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
23 qrCodeEncoder.QRCodeScale = 4;
24 qrCodeEncoder.QRCodeVersion = 0;
25 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
26 Image bmp = qrCodeEncoder.Encode(url);
27 e.Graphics.DrawImage(bmp, new Point(left, top));//不同的URL图片大小不同，可以根据需要调整left坐标
28
29 Top += bmp.Height + this.Interval;
30
31 return bmp.Height;
32 }
33
34 /// <summary>
35 /// 根据链接获取二维码
36 /// 所需参数：URL；距左Left值
37 /// 默认值：距上Top值：顺位值
38 /// </summary>
39 /// <param name="url">链接</param
40 /// <param name="left">二维码：x</param>
41 /// <returns>返回二维码图片的高度</returns>
42 public int DrawQRCodeBmp(string url, int left)
43 {
44 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
45 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
46 qrCodeEncoder.QRCodeScale = 4;
47 qrCodeEncoder.QRCodeVersion = 0;
48 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
49 Image bmp = qrCodeEncoder.Encode(url);
50 e.Graphics.DrawImage(bmp, new Point(left, this.Top));//不同的URL图片大小不同，可以根据需要调整left坐标
51
52 Top += bmp.Height + this.Interval;
53
54 return bmp.Height;
55 }
56 /// <summary>
57 /// 根据链接获取二维码
58 /// 所需参数：URL
59 /// 默认值：距左Left值；距上Top值：顺位值
60 /// </summary>
61 /// <param name="url">链接</param>
62 /// <returns></returns>
63 //public int DrawQRCodeBmp(string url)
64 //{
65 // QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
66 // qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
67 // qrCodeEncoder.QRCodeScale = 4;
68 // qrCodeEncoder.QRCodeVersion = 0;
69 // qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
70 // Image bmp = qrCodeEncoder.Encode(url);
71 // e.Graphics.DrawImage(bmp, new Point(Left, Top));//不同的URL图片大小不同，可以根据需要调整left坐标
72
73 // Top += bmp.Height + this.Interval;
74
75 // return bmp.Height;
76 //}
77 #endregion
78
79 public Bitmap DrawQRCodeBmp(string url)
80 {
81 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
82 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
83 qrCodeEncoder.QRCodeScale = 4;
84 qrCodeEncoder.QRCodeVersion = 0;
85 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
86 return qrCodeEncoder.Encode(url);
87 }
88 }4.form窗体调用：
1 /// <summary>
2 /// 获取条形码保存路径
3 /// </summary>
4 /// <returns></returns>
5 private string GetBarCodeMap()
6 {
7 var path = string.Empty;
8 var code = DateTime.Now.ToString("yyyymmddhhmmss");
9
10 path = System.AppDomain.CurrentDomain.BaseDirectory + "BarCode\\" + Guid.NewGuid().ToString() + ".gif";
11
12 Code128 _Code = new Code128();
13 _Code.Height = 61;
14 _Code.ValueFont = new Font("宋体", 10);
15 System.Drawing.Bitmap imgTemp = _Code.GetCodeImage(code, Code128.Encode.Code128A);
16 imgTemp.Save(path, System.Drawing.Imaging.ImageFormat.Gif);
17
18 return path;
19 }
20
21 /// <summary>
22 /// 获取二维码保存路径
23 /// </summary>
24 /// <returns></returns>
25 private string GetQRCodeMap()
26 {
27 var path = string.Empty;
28 var url = "www.baidu.com";
29
30 path = System.AppDomain.CurrentDomain.BaseDirectory + "BarCode\\" + Guid.NewGuid().ToString() + ".gif";
31
32 QRCodeHelper _QRCode = new QRCodeHelper();
33 System.Drawing.Bitmap imgTemp = _QRCode.DrawQRCodeBmp(url);
34 imgTemp.Save(path, System.Drawing.Imaging.ImageFormat.Gif);
35
36 return path;
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