二维码：
1.下载ThoughtWorks.QRCode.dll文件
2.创建Web项目，添加引用刚才下载的文件
3.在项目中添加aspx窗体，编写代码如下
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SAOMADemo.aspx.cs" Inherits="_0729Test.SAOMADemo" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:Image ID="Image1" runat="server" Height="192px" Width="249px" />
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="生成二维码" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="生成条形码" />
</div>
</form>
</body>
</html>
4.编写aspx后台代码
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using ThoughtWorks.QRCode.Codec;
namespace _0729Test
{
public partial class SAOMADemo : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
//二维码
public void create_two(string nr)
{
Bitmap bt;
string enCodeString = nr;
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
bt = qrCodeEncoder.Encode(enCodeString, Encoding.UTF8);
Random r = new Random();
int rd = r.Next(0, 9999) * 8888;
string filename = string.Format(rd.ToString()) + ".jpg";
filename = filename.Replace(" ", "");
filename = filename.Replace(":", "");
filename = filename.Replace("-", "");
filename = filename.Replace(".", "");
bt.Save(Server.MapPath("img/") + filename + ".jpg");
this.Image1.ImageUrl = "img/" + filename + ".jpg";
}
//生成二维码
protected void Button1_Click(object sender, EventArgs e)
{
create_two(this.TextBox1.Text.Trim());
}
}
}
条形码：
1.在项目中添加Code39类，用于生成条码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Collections;
namespace _0705Test
{
public class Code39
{
private Hashtable m_Code39 = new Hashtable();
;
/// <summary>
/// 放大倍数
/// </summary>
public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }
;
/// <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(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
m_Code39.Add(");
//m_Code39.Add("contentquot;, "1001001001010");
m_Code39.Add(");
m_Code39.Add(");
}
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();
; i != _ValueChar.Length; i++)
{
&& ()
{
_ValueText += "+" + _ValueChar[i].ToString().ToUpper();
}
else
{
_ValueText += _ValueChar[i].ToString();
}
}
break;
}
_ValueChar = _ValueText.ToCharArray();
if (p_StarChar == true) _CodeText += m_Code39["*"];
; 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 = ), (int)m_Height);
Graphics _Garphics = Graphics.FromImage(_CodeImage);
_Garphics.FillRectangle(Brushes.White, , , _CodeImage.Width, _CodeImage.Height));
;
; i != _Value.Length; i++)
{
;
')
{
_Garphics.FillRectangle(Brushes.Black, , _DrawWidth, m_Height));
}
else
{
_Garphics.FillRectangle(Brushes.White, , _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);
)
{
_Graphics.Dispose();
return;
}
int _StarHeight = p_CodeImage.Height - (int)_FontSize.Height;
_Graphics.FillRectangle(Brushes.White, , _StarHeight, p_CodeImage.Width, (int)_FontSize.Height));
;
_Graphics.DrawString(p_Text, m_ViewFont, Brushes.Black, _StarWidth, _StarHeight);
_Graphics.Dispose();
}
}
}
2.在项目中添加一般处理程序，编写代码如下
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Web;
using _0729Test;
using _0705Test;
namespace _0729Test
{
/// <summary>
/// TiaoMa 的摘要说明
/// </summary>
public class TiaoMa : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string OrderNo = context.Request.Params["OrderNo"];
_0705Test.Code39 _Code39 = new Code39();
_Code39.Height = ;
_Code39.Magnify = ;
_Code39.ViewFont = );
System.Drawing.Image _CodeImage = _Code39.GetCodeImage(OrderNo, Code39.Code39Model.Code39Normal, true);
System.IO.MemoryStream _Stream = new System.IO.MemoryStream();
_CodeImage.Save(_Stream, System.Drawing.Imaging.ImageFormat.Jpeg);
context.Response.ContentType = "image/tiff";
context.Response.Clear();
context.Response.BufferOutput = true;
context.Response.BinaryWrite(_Stream.GetBuffer());
context.Response.Flush();
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
4.在button2的click事件写上:
protected void Button2_Click(object sender, EventArgs e)
{
this.Image1.ImageUrl = "/TiaoMa.ashx?OrderNo=" + this.TextBox1.Text.Trim().ToString();
}
5.我也忘了当时为什么不写在一个页面里，加个一般处理程序了，好像是点第二个按钮没反应。。 我写到一个页面中试一下