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php爱好者> php文档>ASP.net生成条形码

ASP.net生成条形码

时间：2010-10-16 来源：路-在继续

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='width:" + width + ";background:#FFFFFF;'></span>");
strTmp = strTmp.Replace("|", "<span style='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>