ASP.Net(C#)生成条形码

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Default.aspx.cs

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("20101125.net", 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:要显示条形码的宽度;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; } }}

GDI+

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);}