ASP.net生成条形码

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ASP.net(c#)生成条形码的源码如下：(仅供参考) 由于公司经常要用到条形码打印，在网上搜了好久，发现了几个在线条码打印机生成的例子.

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(bar_code(www.saibon.com.cn, 100, 1, 2));
}
public string bar_code(object str, int ch, int cw, int type_code)
{
//str:输入的字符串;ch:要显示条形码的高度;cw:要显示条码的宽度;type_code:代码类型
string strTmp = str.ToString();
string code = strTmp;
// 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。
strTmp = strTmp.ToLower();
int height = ch;
int width = cw;

//将传入的参数进行转化。
strTmp = strTmp.Replace("0", "_|_|__||_||_|"); ;
strTmp = strTmp.Replace("1", "_||_|__|_|_||");
strTmp = strTmp.Replace("2", "_|_||__|_|_||");
strTmp = strTmp.Replace("3", "_||_||__|_|_|");
strTmp = strTmp.Replace("4", "_|_|__||_|_||");
strTmp = strTmp.Replace("5", "_||_|__||_|_|");
strTmp = strTmp.Replace("7", "_|_|__|_||_||");
strTmp = strTmp.Replace("6", "_|_||__||_|_|");
strTmp = strTmp.Replace("8", "_||_|__|_||_|");
strTmp = strTmp.Replace("9", "_|_||__|_||_|");
strTmp = strTmp.Replace("a", "_||_|_|__|_||");
strTmp = strTmp.Replace("b", "_|_||_|__|_||");
strTmp = strTmp.Replace("c", "_||_||_|__|_|");
strTmp = strTmp.Replace("d", "_|_|_||__|_||");
strTmp = strTmp.Replace("e", "_||_|_||__|_|");
strTmp = strTmp.Replace("f", "_|_||_||__|_|");
strTmp = strTmp.Replace("g", "_|_|_|__||_||");
strTmp = strTmp.Replace("h", "_||_|_|__||_|");
strTmp = strTmp.Replace("i", "_|_||_|__||_|");
strTmp = strTmp.Replace("j", "_|_|_||__||_|");
strTmp = strTmp.Replace("k", "_||_|_|_|__||");
strTmp = strTmp.Replace("l", "_|_||_|_|__||");
strTmp = strTmp.Replace("m", "_||_||_|_|__|");
strTmp = strTmp.Replace("n", "_|_|_||_|__||");
strTmp = strTmp.Replace("o", "_||_|_||_|__|");
strTmp = strTmp.Replace("p", "_|_||_||_|__|");
strTmp = strTmp.Replace("r", "_||_|_|_||__|");
strTmp = strTmp.Replace("q", "_|_|_|_||__||");
strTmp = strTmp.Replace("s", "_|_||_|_||__|");
strTmp = strTmp.Replace("t", "_|_|_||_||__|");
strTmp = strTmp.Replace("u", "_||__|_|_|_||");
strTmp = strTmp.Replace("v", "_|__||_|_|_||");
strTmp = strTmp.Replace("w", "_||__||_|_|_|");
strTmp = strTmp.Replace("x", "_|__|_||_|_||");
strTmp = strTmp.Replace("y", "_||__|_||_|_|");
strTmp = strTmp.Replace("z", "_|__||_||_|_|");
strTmp = strTmp.Replace("-", "_|__|_|_||_||");
strTmp = strTmp.Replace("*", "_|__|_||_||_|");
strTmp = strTmp.Replace("/", "_|__|__|_|__|");
strTmp = strTmp.Replace("%", "_|_|__|__|__|");
strTmp = strTmp.Replace("+", "_|__|_|__|__|");
strTmp = strTmp.Replace(".", "_||__|_|_||_|");
strTmp = strTmp.Replace("_", "");
strTmp = strTmp.Replace("|", "");

if (type_code == 1)
{
return strTmp + " " + code;
}
else
{
return strTmp;
}
}
}

.net生成条形码的方法二：
using System.Drawing;

public void CreateCodeLogo(string code)
 {

 long len = code.Length;
 string lastString = "";
 char[] list = new char[len + 1];

 list = code.ToCharArray();

 for (int i = 0; i < list.Length; i++)
 {
 lastString += this.ConvertToBinaryString(list[i].ToString());
 }

 char[] numList = new char[lastString.Length + 1];
 numList = lastString.ToCharArray();

 Bitmap image = new Bitmap(200, 140);
 Graphics g = Graphics.FromImage(image);

 g.Clear(Color.White);

 Pen penBlack = new Pen(Color.FromArgb(255, 0, 0, 0), 2.5F);
 Pen penWhite = new Pen(Color.White, 2.5F);

 int j = 0;

 for (float k = 10; j < numList.Length; k += 2F, j++)
 {
 if (numList[j].ToString() == "1")
 {
 g.DrawLine(penBlack, k, 10, k, 110);

 }
 else
 {
 g.DrawLine(penWhite, k, 10, k, 110);
 }

 if (j % 4 == 0)
 {
 g.DrawString(list[j / 4].ToString(), new System.Drawing.Font("Courier New", 12), new SolidBrush(Color.Red), k, 112);
 }
 }
 image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
 }

 //将字符串数值转换为二进制字符串数值
 public string ConvertToBinaryString(string buf)
 {
 int[] temp = new int[20];
 string binary;
 int val = 0, i = 0, j;

 //先将字符转化为十进制数
 try
 {
 val = Convert.ToInt32(buf);
 }
 catch
 {
 val = 0;
 }

 if (val == 0)
 {
 return ("0000");
 }

 i = 0;
 while (val != 0)
 {
 temp[i++] = val % 2;
 val /= 2;
 }

 binary = "";

 for (j = 0; j <= i - 1; j++)
 {
 binary += (char)(temp[i - j - 1] + 48);
 }

 if (binary.Length < 4) //如果小于4位左边补零
 {
 int len = 4 - binary.Length;
 string str = "";

 while (len > 0)
 {
 str += "0";
 len--;
 }

 binary = str + binary;
 }

 return (binary);
 }

 protected void Button1_Click(object sender, EventArgs e)
 {
 CreateCodeLogo(TextBox1.Text);
}

C#实现Code39条形码在线输出(Asp.net)
CODE39码的编码规则是：

1、每五条线表示一个字符；

2、粗线表示1，细线表示0；

3、线条间的间隙宽的表示1，窄的表示0；

4、五条线加上它们之间的四条间隙就是九位二进制编码，而且这九位中必定有三位是1，所以称为39码；

5、条形码的首尾各一个＊标识开始和结束

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;

namespace test.test.MyImage.BandCode
{
 /// <summary>
 /// Code39编码
 /// </summary>
 public class Code39
 {
 private Hashtable m_Code39 = new Hashtable();

 private byte m_Magnify = 0;
 /// <summary>
 /// 放大倍数
 /// </summary>
 public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }

 private int m_Height = 40;
 /// <summary>
 /// 图形高
 /// </summary>
 public int Height { get { return m_Height; } set { m_Height = value; } }

 private Font m_ViewFont = null;
 /// <summary>
 /// 字体大小
 /// </summary>
 public Font ViewFont { get { return m_ViewFont; } set { m_ViewFont = value; } }

 public Code39()
 {

 m_Code39.Add("A", "1101010010110");
 m_Code39.Add("B", "1011010010110");
 m_Code39.Add("C", "1101101001010");
 m_Code39.Add("D", "1010110010110");
 m_Code39.Add("E", "1101011001010");
 m_Code39.Add("F", "1011011001010");
 m_Code39.Add("G", "1010100110110");
 m_Code39.Add("H", "1101010011010");
 m_Code39.Add("I", "1011010011010");
 m_Code39.Add("J", "1010110011010");
 m_Code39.Add("K", "1101010100110");
 m_Code39.Add("L", "1011010100110");
 m_Code39.Add("M", "1101101010010");
 m_Code39.Add("N", "1010110100110");
 m_Code39.Add("O", "1101011010010");
 m_Code39.Add("P", "1011011010010");
 m_Code39.Add("Q", "1010101100110");
 m_Code39.Add("R", "1101010110010");
 m_Code39.Add("S", "1011010110010");
 m_Code39.Add("T", "1010110110010");
 m_Code39.Add("