资源下载链接：点击打开链接 很抱歉通知：这个下载二维码资源这个需要安装dev插件。因为我用了dev控件，没有安装dev直接下载运行会报错缺少dll。所以很是抱歉。
先看下界面：
代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Linq;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using ThoughtWorks.QRCode.Codec;
using Com.MEP.UI;
using ThoughtWorks.QRCode.Codec.Data;
namespace 二维码
{
public partial class XtraForm1 : DevExpress.XtraEditors.XtraForm
{
public XtraForm1()
{
InitializeComponent();
//二维码生成初始选中值，（正常二维码值别的暂时不懂）
cboEncoding.SelectedIndex = 2;
cboVersion.SelectedIndex = 6;
cboCorrectionLevel.SelectedIndex = 1;
}
#region 生成二维码
private void btnEncode_Click(object sender, EventArgs e)
{
//MsgBox 这个是公共类，可以直接使用，vs自带的提示框太丑，所以手动写了
if (txtEncodeData.Text.Trim() == String.Empty)
{
MsgBox.Warning("输入要生成的内容");
return;
}
//实例化二维码组件
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
String encoding = cboEncoding.Text;
if (encoding == "Byte")
{
//Byte 字节(汉字)
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
}
else if (encoding == "AlphaNumeric")
{
// AlphaNumeric 字母数字
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;
}
else if (encoding == "Numeric")
{
//Numeric 数字
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.NUMERIC;
}
try
{
int scale = Convert.ToInt16(txtSize.Text);
qrCodeEncoder.QRCodeScale = scale;
}
catch (Exception ex)
{
MsgBox.Warning("请选择");
return;
}
try
{
int version = Convert.ToInt16(cboVersion.Text);
qrCodeEncoder.QRCodeVersion = version;
}
catch (Exception ex)
{
MsgBox.Warning("选择版本号!");
}
string errorCorrect = cboCorrectionLevel.Text;
if (errorCorrect == "L")
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
else if (errorCorrect == "M")
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
else if (errorCorrect == "Q")
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.Q;
else if (errorCorrect == "H")
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H;
//生成二维码图片
Image image;
String data = txtEncodeData.Text;
try
{
image = qrCodeEncoder.Encode(data);
picEncode.Image = image;
}
catch (Exception ex)
{
MsgBox.Warning("输入内容过长，请选择大于当前版本号的版本");
}
}
#endregion
#region 保存二维码
private void btnSave_Click(object sender, EventArgs e)
{
if(picEncode.Image==null)
{
MsgBox.Warning("请先生成二维码！");
return;
}
//以图片的形式保存二维码图片
SaveFileDialog saveFileDialog1 = new SaveFileDialog(); //保存对话框
saveFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PNG Image|*.png";
saveFileDialog1.Title = "Save";
saveFileDialog1.FileName = string.Empty;
saveFileDialog1.ShowDialog();
if (saveFileDialog1.FileName != "")
{
System.IO.FileStream fs =
(System.IO.FileStream)saveFileDialog1.OpenFile();
switch (saveFileDialog1.FilterIndex)
{
case 1:
this.picEncode.Image.Save(fs,
System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case 2:
this.picEncode.Image.Save(fs,
System.Drawing.Imaging.ImageFormat.Bmp);
break;
case 3:
this.picEncode.Image.Save(fs,
System.Drawing.Imaging.ImageFormat.Gif);
break;
case 4:
this.picEncode.Image.Save(fs,
System.Drawing.Imaging.ImageFormat.Png);
break;
}
fs.Close();
MsgBox.Sucess("保存成功！");
}
}
#endregion
#region 解码操作
#region 打开图片
private void btnOpen_Click(object sender, EventArgs e)
{
//打开二维码文件
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PNG Image|*.png|All files (*.*)|*.*";
openFileDialog1.FilterIndex = 1;
openFileDialog1.RestoreDirectory = true;
openFileDialog1.FileName = string.Empty;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
String fileName = openFileDialog1.FileName;
picDecode.Image = new Bitmap(fileName);
}
}
#endregion
#region 解码
private void btnDecode_Click(object sender, EventArgs e)
{
try
{
if (picDecode.Image == null)
{ MsgBox.Warning("没有二维码图片，请选择"); }
else
{
QRCodeDecoder decoder = new QRCodeDecoder();
String decodedString = decoder.decode(new QRCodeBitmapImage(new Bitmap(picDecode.Image)));
txtDecodedData.Text = decodedString;
}
}
catch (Exception ex)
{
MsgBox.Warning("该图片不是二维码图片，请重新选择");
}
}
#endregion
#endregion
}
}
运行效果：
然后保存图片，去解析二维码：
