ASP.net生成条形码

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>