//生成一维码
private void button1_Click(object sender, EventArgs e)
{//设置条形码规格
EncodingOptions encoding = new EncodingOptions();
encoding.Height = 120;//设置宽高
encoding.Width = 200;
//生成条形码的图片并保存
BarcodeWriter wr = new BarcodeWriter();
wr.Options = encoding;//进行指定规格
wr.Format = BarcodeFormat.EAN_13;//条形码的规格 EAN13规格
Bitmap img = wr.Write(textBox1.Text);//生成图片
string filepath = AppDomain.CurrentDomain.BaseDirectory + "\\ENA_13" + this.textBox1.Text + ".jpg";
img.Save(filepath,System.Drawing.Imaging.ImageFormat.Jpeg);

//读取保存的图片
textBox2.Text = filepath;//设置路径
pictureBox1.Image = img;//存入图片
//弹出一维码图片的路径
MessageBox.Show("保存成功:" + filepath);
}

private void button3_Click(object sender, EventArgs e)
{
//1设置读取条形码的规格
DecodingOptions decoding = new DecodingOptions();
decoding.PossibleFormats = new List()
{
BarcodeFormat.EAN_13
};//指定读取的格式

//2.进行读取操作
BarcodeReader br = new BarcodeReader();
br.Options = decoding;//指定规格
Result result = br.Decode(pictureBox1.Image as Bitmap);//进行读取条形码数字
if (result==null)
{
textBox1.Text = "读取失败";
MessageBox.Show("读取失败");
}
else
{
this.textBox1.Text = result.Text;
MessageBox.Show("读取成功，内容：" + result.Text);
}
}

//[生成二维码]
private void button2_Click(object sender, EventArgs e)
{
//1先设置二维码的规格
QrCodeEncodingOptions qr = new QrCodeEncodingOptions();
qr.CharacterSet = "UTF-8";//设置编码格式,否则会乱码
qr.Height = 200;
qr.Width = 200;
qr.Margin = 1;//设置二维码图片周围空白边距

//2生成条形码图片保存
BarcodeWriter wr = new BarcodeWriter();
wr.Format = BarcodeFormat.QR_CODE;//二维码
wr.Options = qr;//指定格式
Bitmap bitmap = wr.Write(textBox1.Text);//存放二维码
//设置图片的路径
string file = AppDomain.CurrentDomain.BaseDirectory + "\\QR-" + textBox1.Text + ".jpg";
//进行保存
bitmap.Save(file,ImageFormat.Jpeg);

//3读取保存的图片
textBox2.Text = file;
pictureBox1.Image = bitmap;
MessageBox.Show("保存成功,"+file);

}

//[识别二维码]
private void button4_Click(object sender, EventArgs e)
{
//1设置读取条形码规格
DecodingOptions dr = new DecodingOptions();
dr.PossibleFormats = new List()
{
BarcodeFormat.QR_CODE
};

//2进行读取操作
BarcodeReader br = new BarcodeReader();
br.Options = dr;//指定规格
Result rs = br.Decode(pictureBox1.Image as Bitmap);
if (rs == null)
{
textBox1.Text = "读取失败";
MessageBox.Show("读取失败");
}
else
{

textBox1.Text = "读取成功";
MessageBox.Show("读取成功.内容为:"+rs.Text);
}
}

//[带图片的二维码]
private void button6_Click(object sender, EventArgs e)
{
//1设置QR二维码的规格
QrCodeEncodingOptions qr = new QrCodeEncodingOptions();
qr.CharacterSet = "UTF-8"; // 设置编码格式，否则读中文会乱码
qr.Height = 200;
qr.Width = 200;
qr.Margin = 1; // 设置二维码周围空白边距(可选)

//2生成条形码图片
ZXing.BarcodeWriter wr = new BarcodeWriter();
wr.Format = BarcodeFormat.QR_CODE; // 二维码
wr.Options = qr;
Bitmap img = wr.Write(this.textBox1.Text);

// 3.在二维码的Bitmap对象上绘制logo图片
Bitmap logoImg = Bitmap.FromFile(System.AppDomain.CurrentDomain.BaseDirectory + "\\logo.jpg") as Bitmap;
Graphics g = Graphics.FromImage(img);
Rectangle logoRec = new Rectangle(); // 设置logo图片的大小和绘制位置
logoRec.Width = img.Width / 6;
logoRec.Height = img.Height / 6;
logoRec.X = img.Width / 2 - logoRec.Width / 2; // 中心点
logoRec.Y = img.Height / 2 - logoRec.Height / 2;
g.DrawImage(logoImg, logoRec);

// 4.保存绘制后的图片
string filePath = System.AppDomain.CurrentDomain.BaseDirectory + "\\QR-" + this.textBox1.Text + ".jpg";
img.Save(filePath, System.Drawing.Imaging.ImageFormat.Jpeg);

// 5.读取保存的图片
this.textBox2.Text = filePath;
this.pictureBox1.Image = img;
MessageBox.Show("保存成功：" + filePath);
}