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("_", "<span style='height:" + height + ";width:" + width + ";background:#FFFFFF;'></span>");
strTmp = strTmp.Replace("|", "<span style='height:" + height + ";width:" + width + ";background:#000000;'></span>");
if (type_code == 1)
{
return strTmp + "<BR>" + 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("U", "1100101010110");
m_Code39.Add("V", "1001101010110");
m_Code39.Add("W", "1100110101010");
m_Code39.Add("X", "1001011010110");
m_Code39.Add("Y", "1100101101010");
m_Code39.Add("Z", "1001101101010");
m_Code39.Add("0", "1010011011010");
m_Code39.Add("1", "1101001010110");
m_Code39.Add("2", "1011001010110");
m_Code39.Add("3", "1101100101010");
m_Code39.Add("4", "1010011010110");
m_Code39.Add("5", "1101001101010");
m_Code39.Add("6", "1011001101010");
m_Code39.Add("7", "1010010110110");
m_Code39.Add("8", "1101001011010");
m_Code39.Add("9", "1011001011010");
m_Code39.Add("+", "1001010010010");
m_Code39.Add("-", "1001010110110");
m_Code39.Add("*", "1001011011010");
m_Code39.Add("/", "1001001010010");
m_Code39.Add("%", "1010010010010");
m_Code39.Add("contentquot;, "1001001001010");
m_Code39.Add(".", "1100101011010");
m_Code39.Add(" ", "1001101011010");
}
public enum Code39Model
{
/// <summary>
/// 基本类别 1234567890ABC
/// </summary>
Code39Normal,
/// <summary>
/// 全ASCII方式 +A+B 来表示小写
/// </summary>
Code39FullAscII
}
/// <summary>
/// 获得条码图形
/// </summary>
/// <param name="p_Text">文字信息</param>
/// <param name="p_Model">类别</param>
/// <param name="p_StarChar">是否增加前后*号</param>
/// <returns>图形</returns>
public Bitmap GetCodeImage(string p_Text, Code39Model p_Model, bool p_StarChar)
{
string _ValueText = "";
string _CodeText = "";
char[] _ValueChar = null;
switch (p_Model)
{
case Code39Model.Code39Normal:
_ValueText = p_Text.ToUpper();
break;
default:
_ValueChar = p_Text.ToCharArray();
for (int i = 0; i != _ValueChar.Length; i++)
{
if ((int)_ValueChar[i] >= 97 && (int)_ValueChar[i] <= 122)
{
_ValueText += "+" + _ValueChar[i].ToString().ToUpper();
}
else
{
_ValueText += _ValueChar[i].ToString();
}
}
break;
}
_ValueChar = _ValueText.ToCharArray();
if (p_StarChar == true) _CodeText += m_Code39["*"];
for (int i = 0; i != _ValueChar.Length; i++)
{
if (p_StarChar == true && _ValueChar[i] == '*') throw new Exception("带有起始符号不能出现*");
object _CharCode = m_Code39[_ValueChar[i].ToString()];
if (_CharCode == null) throw new Exception("不可用的字符" + _ValueChar[i].ToString());
_CodeText += _CharCode.ToString();
}
if (p_StarChar == true) _CodeText += m_Code39["*"];
Bitmap _CodeBmp = GetImage(_CodeText);
GetViewImage(_CodeBmp, p_Text);
return _CodeBmp;
}
/// <summary>
/// 绘制编码图形
/// </summary>
/// <param name="p_Text">编码</param>
/// <returns>图形</returns>
private Bitmap GetImage(string p_Text)
{
char[] _Value = p_Text.ToCharArray();
//宽 == 需要绘制的数量*放大倍数 + 两个字的宽
Bitmap _CodeImage = new Bitmap(_Value.Length * ((int)m_Magnify + 1), (int)m_Height);
Graphics _Garphics = Graphics.FromImage(_CodeImage);
_Garphics.FillRectangle(Brushes.White, new Rectangle(0, 0, _CodeImage.Width, _CodeImage.Height));
int _LenEx = 0;
for (int i = 0; i != _Value.Length; i++)
{
int _DrawWidth = m_Magnify + 1;
if (_Value[i] == '1')
{
_Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, _DrawWidth, m_Height));
}
else
{
_Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, _DrawWidth, m_Height));
}
_LenEx += _DrawWidth;
}
_Garphics.Dispose();
return _CodeImage;
}
/// <summary>
/// 绘制文字
/// </summary>
/// <param name="p_CodeImage">图形</param>
/// <param name="p_Text">文字</param>
private void GetViewImage(Bitmap p_CodeImage, string p_Text)
{
if (m_ViewFont == null) return;
Graphics _Graphics = Graphics.FromImage(p_CodeImage);
SizeF _FontSize = _Graphics.MeasureString(p_Text, m_ViewFont);
if (_FontSize.Width > p_CodeImage.Width || _FontSize.Height > p_CodeImage.Height - 20)
{
_Graphics.Dispose();
return;
}
int _StarHeight = p_CodeImage.Height - (int)_FontSize.Height;
_Graphics.FillRectangle(Brushes.White, new Rectangle(0, _StarHeight, p_CodeImage.Width, (int)_FontSize.Height));
int _StarWidth = (p_CodeImage.Width - (int)_FontSize.Width) / 2;
_Graphics.DrawString(p_Text, m_ViewFont, Brushes.Black, _StarWidth, _StarHeight);
_Graphics.Dispose();
}
}
}
default.aspx.cs文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Drawing;
using System.Web.UI.WebControls;
namespace test
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
test.MyImage.BandCode.Code39 _Code39 = new test.MyImage.BandCode.Code39();
_Code39.Height = 120;
_Code39.Magnify = 1;
_Code39.ViewFont = new Font("宋体", 20);
System.Drawing.Image _CodeImage = _Code39.GetCodeImage("123ABC4567890FWF", test.MyImage.BandCode.Code39.Code39Model.Code39Normal, true);
System.IO.MemoryStream _Stream = new System.IO.MemoryStream();
_CodeImage.Save(_Stream, System.Drawing.Imaging.ImageFormat.Jpeg);
_CodeImage.Save(@"C:/1.jpeg");
_CodeImage.Save(@"C:/1.BMP");
_CodeImage.Save(@"C:/1.GIF");
Response.ContentType = "image/jpeg";
Response.Clear();
Response.BufferOutput = true;
Response.BinaryWrite(_Stream.GetBuffer());
Response.Flush();
}
}
}
default.aspx文件
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="test._Default" %>
<body>
<form id="form1" runat="server">
<div>
//输入image的那个页面
<asp:Image ID="Image1" runat="server" ImageUrl="~/Default.aspx"/>
</div>
</form>
</body>
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