asp.net生成二維碼
下面使用ThoughtWorks.QRCode.dll這個類庫，實現生成二維碼
使用時需要增加:下面三個命名空間
using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
using ThoughtWorks.QRCode.Codec.Util;
下面代碼主要是在asp.net中，生成一張二維碼圖片，在網頁中顯示，而且，將二維碼圖片保存在了，D：/zlf/zz。png；
C# 代碼 復制
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 二維碼！"; 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頁面代碼
HTML 代碼 復制<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
