Default.aspx.cs

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using System;
using System.Configuration;
using System.Data;
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;
using System.Collections;
using System.ComponentModel;
 
using System.Runtime.InteropServices;
using System.Drawing.Imaging;
using System.Text;

using System.Drawing.Drawing2D;

using com.google.zxing;
using com.google.zxing.qrcode;
using com.google.zxing.datamatrix;
using com.google.zxing.pdf417;
using com.google.zxing.multi.qrcode;
using com.google.zxing.common;
using com.google.zxing.qrcode.detector;
using System.IO;

//下载于51aspx.com


public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        
            //构造二维码写码器
            MultiFormatWriter mutiWriter = new com.google.zxing.MultiFormatWriter();
            Hashtable hint = new Hashtable();
            hint.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
            hint.Add(EncodeHintType.ERROR_CORRECTION, com.google.zxing.qrcode.decoder.ErrorCorrectionLevel.H);
            //生成二维码
            ByteMatrix bm = mutiWriter.encode(textBox1.Text, com.google.zxing.BarcodeFormat.QR_CODE, 300, 300, hint);
            Bitmap img = bm.ToBitmap();

          //  pictureBox1.Image = img;

            //自动保存图片到当前目录
            string filename = Server.MapPath(Request.ApplicationPath);
             string filename2="QR" + DateTime.Now.Ticks.ToString() + ".jpg";
            img.Save(filename+"\\"+filename2, System.Drawing.Imaging.ImageFormat.Jpeg);

            Image2.ImageUrl = filename2;