c#二维码建立与识别

QrCodeEncodingOptions options = new QrCodeEncodingOptions();

options.CharacterSet = "UTF-8";

options.DisableECI = true; // Extended Channel Interpretation (ECI) 主要用于特殊的字符集。并不是所有的扫描器都支持这种编码。

options.ErrorCorrection = ZXing.QrCode.Internal.ErrorCorrectionLevel.H; // 纠错级别

options.Width = 300;

options.Height = 300;

options.Margin = 1;

// options.Hints，更多属性，也可以在这里添加。

BarcodeWriter writer = new BarcodeWriter();

writer.Format = BarcodeFormat.QR_CODE;

writer.Options = options;

Response.Clear();

using (Bitmap bmp = writer.Write("http://www.cftea.com")) // Write 具备生成、写入两个功能

{

 MemoryStream ms = new MemoryStream();

 {

  bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

  Response.ContentType = "image/png";

  Response.BinaryWrite(ms.ToArray());

 }

}

Response.End();

QrCodeEncodingOptions options = new QrCodeEncodingOptions();

options.CharacterSet = "UTF-8";

options.Width = 300;

options.Height = 50;

options.Margin = 1;

options.PureBarcode = false; // 是否是纯码，如果为 false，则会在图片下方显示数字

BarcodeWriter writer = new BarcodeWriter();

writer.Format = BarcodeFormat.CODE_128;

writer.Options = options;

Response.Clear();

using (Bitmap bmp = writer.Write("12345678"))

{

 MemoryStream ms = new MemoryStream();

 {

  bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

  Response.ContentType = "image/png";

  Response.BinaryWrite(ms.ToArray());

 }

}

Response.End();

BarcodeReader reader = new BarcodeReader();

reader.Options.CharacterSet = "UTF-8";

using (Bitmap bmp = new Bitmap("D:\\qr.png"))

{

 Result result = reader.Decode(bmp);

 Response.Write(result.Text);

}