下面使用ThoughtWorks.QRCode.dll这个类库，实现生成二维码
使用时需要增加:下面三个命名空间
using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
using ThoughtWorks.QRCode.Codec.Util;
下面代码主要是在asp.net中，生成一张二维码图片，在网页中显示，而且，将二维码图片保存在了，D：zlfzz。png；
C# 代码 复制
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Drawing.Imaging;
using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
using ThoughtWorks.QRCode.Codec.Util;
using System.IO;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
qrCodeEncoder.QRCodeScale = 4;
qrCodeEncoder.QRCodeVersion = 8;
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
//String data = "Hello 二维码！";
String data = TextBox1.Text.ToString();
Response.Write(data);
System.Drawing.Bitmap image = qrCodeEncoder.Encode(data);
System.IO.MemoryStream MStream = new System.IO.MemoryStream();
image.Save(MStream, System.Drawing.Imaging.ImageFormat.Png);
Response.ClearContent();
Response.ContentType = "image/Png";
Response.BinaryWrite(MStream.ToArray());
//FileInfo f = new FileInfo(@"d:\zl.png");
Directory.CreateDirectory("d:\\zlf");
FileStream fs = new FileStream("d:\\zlf\\zz。png", FileMode.CreateNew, FileAccess.ReadWrite);
BinaryWriter bw = new BinaryWriter(fs, UTF8Encoding.UTF8);
byte[] by = MStream.ToArray();
for (int i = 0; i < MStream.ToArray().Length; i++)
bw.Write(by[i]);
fs.Close();
}
}
aspx页面代码
HTML 代码 复制
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<html>
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
请输入内容：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br/>
<asp:Button ID="Button1" runat="server" Text="生成二维码" onclick="Button1_Click" />
</div>
</form>
</body>
</html>