private void GenerateQRByQrCodeNet()
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
QrCode qrCode = new QrCode();
qrEncoder.TryEncode("Hello World. This is Eric Sun Testing...", out qrCode);
GraphicsRenderer renderer = new GraphicsRenderer(new FixedModuleSize(5, QuietZoneModules.Two), Brushes.Black, Brushes.White);
using (MemoryStream ms = new MemoryStream())
{
renderer.WriteToStream(qrCode.Matrix, ImageFormat.Png, ms);
Image img = Image.FromStream(ms);
img.Save("E:/csharp-qrcode-net.png");
}
}

private void GenerateQRByThoughtWorks()
{
QRCodeEncoder encoder = new QRCodeEncoder();
encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;//编码方式(注意：BYTE能支持中文，ALPHA_NUMERIC扫描出来的都是数字)
encoder.QRCodeScale = 4;//大小(值越大生成的二维码图片像素越高)
encoder.QRCodeVersion = 0;//版本(注意：设置为0主要是防止编码的字符串太长时发生错误)
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;//错误效验、错误更正(有4个等级)
encoder.QRCodeBackgroundColor = Color.Yellow;
encoder.QRCodeForegroundColor = Color.Green;
string qrdata = "Hello 世界! This is Eric Sun Testing....";
Bitmap bcodeBitmap = encoder.Encode(qrdata.ToString());
bcodeBitmap.Save(@"E:\HelloWorld.png", ImageFormat.Png);
bcodeBitmap.Dispose();
}

private void GenerateQRBySpire()
{
BarcodeSettings bs = new BarcodeSettings()
{
Data = "This is qr code: H2AMK-Z3V69-RTJZD-C7JAU-WILL4",
Type = BarCodeType.QRCode,
TopTextColor = Color.Red,
ShowCheckSumChar = false,
ShowText = false
};
//Generate the barcode based on the this.barCodeControl1
BarCodeGenerator generator = new BarCodeGenerator(bs);
Image barcode = generator.GenerateImage();
//save the barcode as an image
barcode.Save(@"E:\barcode-2d.png");
}

private void GenerateBarCodeBySpire()
{
BarcodeSettings bs = new BarcodeSettings()
{
Data = "This is barcode: H2AMK-Z3V69-RTJZD-C7JAU-WILL4",
ShowCheckSumChar = false,
TopTextColor = Color.Red,
ShowTopText = false,
ShowTextOnBottom = true
};
//Generate the barcode based on the this.barCodeControl1
BarCodeGenerator generator = new BarCodeGenerator(bs);
Image barcode = generator.GenerateImage();
//save the barcode as an image
barcode.Save(@"E:\barcode.png");
}

private void GenerateBarCodeByZen()
{
Code128BarcodeDraw barcode128 = BarcodeDrawFactory.Code128WithChecksum;
Image img = barcode128.Draw("Hello World", 40);
img.Save("E:/zenbarcode.gif");
}

private void GenerateQRByZen()
{
CodeQrBarcodeDraw qrcode = BarcodeDrawFactory.CodeQr;
Image img = qrcode.Draw("Hello World!", qrcode.GetDefaultMetrics(40));
img.Save("E:/zenqrcode.gif");
}

private void GenerateQRByBarcodeLib()
{
QRCode qrbarcode = new QRCode();
qrbarcode.Encoding = QRCodeEncoding.Auto;
qrbarcode.Data = "336699885522 This is Eric Sun Testing.";
qrbarcode.ModuleSize = 10;
qrbarcode.LeftMargin = 8;
qrbarcode.RightMargin = 8;
qrbarcode.TopMargin = 8;
qrbarcode.BottomMargin = 8;
qrbarcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Gif;
// Save QR Code barcode image into your system
qrbarcode.drawBarcode("E:/csharp-qrcode-lib.gif");
}

private void GenerateLinearByBarcodeLib()
{
Linear barcode = new Linear();
barcode.Type = BarcodeType.CODE128;
barcode.Data = "CODE128";
// other barcode settings.
// save barcode image into your system
barcode.drawBarcode("E:/barcode.png");
}