ASP.NET(c#)生成条形码

Posted 2020-06-24 柒月流火灬

  1 using System;
  2 using System.Data;
  3 using System.Configuration;
  4 using System.Web;
  5 using System.Web.Security;
  6 using System.Web.UI;
  7 using System.Web.UI.WebControls;
  8 using System.Web.UI.WebControls.WebParts;
  9 using System.Web.UI.htmlControls;
 10 
 11 public partial class _Default : System.Web.UI.Page 
 12 {
 13 protected void Page_Load(object sender, EventArgs e)
 14 {
 15 Response.Write(bar_code("www.sosuo8.com", 100, 1, 2));
 16 }
 17 public string bar_code(object str, int ch, int cw, int type_code)
 18 {
 19 //str:输入的字符串;ch:要显示条形码的高度;cw:要显示条形码的宽度;type_code:代码类型
 20 string strTmp = str.ToString();
 21 string code = strTmp;
 22 // ToLower()将string转化成小写形式的副本，返回是使用指定区域的性的大小写规则。
 23 strTmp = strTmp.ToLower();
 24 int height = ch;
 25 int width = cw;
 26 
 27 //将传入的参数进行转化。
 28 strTmp = strTmp.Replace("0", "_|_|__||_||_|"); ;
 29 strTmp = strTmp.Replace("1", "_||_|__|_|_||");
 30 strTmp = strTmp.Replace("2", "_|_||__|_|_||");
 31 strTmp = strTmp.Replace("3", "_||_||__|_|_|");
 32 strTmp = strTmp.Replace("4", "_|_|__||_|_||");
 33 strTmp = strTmp.Replace("5", "_||_|__||_|_|");
 34 strTmp = strTmp.Replace("7", "_|_|__|_||_||");
 35 strTmp = strTmp.Replace("6", "_|_||__||_|_|");
 36 strTmp = strTmp.Replace("8", "_||_|__|_||_|");
 37 strTmp = strTmp.Replace("9", "_|_||__|_||_|");
 38 strTmp = strTmp.Replace("a", "_||_|_|__|_||");
 39 strTmp = strTmp.Replace("b", "_|_||_|__|_||");
 40 strTmp = strTmp.Replace("c", "_||_||_|__|_|");
 41 strTmp = strTmp.Replace("d", "_|_|_||__|_||");
 42 strTmp = strTmp.Replace("e", "_||_|_||__|_|");
 43 strTmp = strTmp.Replace("f", "_|_||_||__|_|");
 44 strTmp = strTmp.Replace("g", "_|_|_|__||_||");
 45 strTmp = strTmp.Replace("h", "_||_|_|__||_|");
 46 strTmp = strTmp.Replace("i", "_|_||_|__||_|");
 47 strTmp = strTmp.Replace("j", "_|_|_||__||_|");
 48 strTmp = strTmp.Replace("k", "_||_|_|_|__||");
 49 strTmp = strTmp.Replace("l", "_|_||_|_|__||");
 50 strTmp = strTmp.Replace("m", "_||_||_|_|__|");
 51 strTmp = strTmp.Replace("n", "_|_|_||_|__||");
 52 strTmp = strTmp.Replace("o", "_||_|_||_|__|");
 53 strTmp = strTmp.Replace("p", "_|_||_||_|__|");
 54 strTmp = strTmp.Replace("r", "_||_|_|_||__|");
 55 strTmp = strTmp.Replace("q", "_|_|_|_||__||");
 56 strTmp = strTmp.Replace("s", "_|_||_|_||__|");
 57 strTmp = strTmp.Replace("t", "_|_|_||_||__|");
 58 strTmp = strTmp.Replace("u", "_||__|_|_|_||");
 59 strTmp = strTmp.Replace("v", "_|__||_|_|_||");
 60 strTmp = strTmp.Replace("w", "_||__||_|_|_|");
 61 strTmp = strTmp.Replace("x", "_|__|_||_|_||");
 62 strTmp = strTmp.Replace("y", "_||__|_||_|_|");
 63 strTmp = strTmp.Replace("z", "_|__||_||_|_|");
 64 strTmp = strTmp.Replace("-", "_|__|_|_||_||");
 65 strTmp = strTmp.Replace("*", "_|__|_||_||_|");
 66 strTmp = strTmp.Replace("/", "_|__|__|_|__|");
 67 strTmp = strTmp.Replace("%", "_|_|__|__|__|");
 68 strTmp = strTmp.Replace("+", "_|__|_|__|__|");
 69 strTmp = strTmp.Replace(".", "_||__|_|_||_|");
 70 strTmp = strTmp.Replace("_", "<span style=‘height:" + height + ";width:" + width + ";background:#FFFFFF;‘></span>");
 71 strTmp = strTmp.Replace("|", "<span style=‘height:" + height + ";width:" + width + ";background:#000000;‘></span>");
 72 
 73 if (type_code == 1)
 74 {
 75 return strTmp + "<BR>" + code;
 76 }
 77 else
 78 {
 79 return strTmp;
 80 }
 81 } 
 82 }
 83 
 84 方法二：
 85 using System.Drawing;
 86 
 87 public void CreateCodeLogo(string code)
 88     {
 89 
 90         long len = code.Length;
 91         string lastString = "";
 92         char[] list = new char[len + 1];
 93 
 94 
 95         list = code.ToCharArray();
 96 
 97         for (int i = 0; i < list.Length; i++)
 98         {
 99             lastString += this.ConvertToBinaryString(list[i].ToString());
100         }
101 
102         char[] numList = new char[lastString.Length + 1];
103         numList = lastString.ToCharArray();
104 
105 
106         Bitmap image = new Bitmap(200, 140);
107         Graphics g = Graphics.FromImage(image);
108 
109         g.Clear(Color.White);
110 
111         Pen penBlack = new Pen(Color.FromArgb(255, 0, 0, 0), 2.5F);
112         Pen penWhite = new Pen(Color.White, 2.5F);
113 
114         int j = 0;
115 
116         for (float k = 10; j < numList.Length; k += 2F, j++)
117         {
118             if (numList[j].ToString() == "1")
119             {
120                 g.DrawLine(penBlack, k, 10, k, 110);
121 
122             }
123             else
124             {
125                 g.DrawLine(penWhite, k, 10, k, 110);
126             }
127 
128             if (j % 4 == 0)
129             {
130                 g.DrawString(list[j / 4].ToString(), new System.Drawing.Font("Courier New", 12), new SolidBrush(Color.Red), k, 112);
131             }
132         }
133         image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
134     }
135 
136 
137     //将字符串数值转换为二进制字符串数值
138     public string ConvertToBinaryString(string buf)
139     {
140         int[] temp = new int[20];
141         string binary;
142         int val = 0, i = 0, j;
143 
144         //先将字符转化为十进制数
145         try
146         {
147             val = Convert.ToInt32(buf);
148         }
149         catch
150         {
151             val = 0;
152         }
153 
154         if (val == 0)
155         {
156             return ("0000");
157         }
158 
159         i = 0;
160         while (val != 0)
161         {
162             temp[i++] = val % 2;
163             val /= 2;
164         }
165 
166         binary = "";
167 
168         for (j = 0; j <= i - 1; j++)
169         {
170             binary += (char)(temp[i - j - 1] + 48);
171         }
172 
173         if (binary.Length < 4)   //如果小于4位左边补零
174         {
175             int len = 4 - binary.Length;
176             string str = "";
177 
178             while (len > 0)
179             {
180                 str += "0";
181                 len--;
182             }
183 
184             binary = str + binary;
185         }
186 
187         return (binary);
188     }
189 
190     protected void Button1_Click(object sender, EventArgs e)
191     {
192         CreateCodeLogo(TextBox1.Text);
193 }