二维码生成 - QrCodeNet
1 /// <summary> 2 /// 生成QR码 3 /// </summary> 4 /// <param name="output_path">输出路径</param> 5 /// <param name="text">写入文本</param> 6 /// <param name="scale">缩放比例</param> 7 public static void GetQRCode(String output_path, String text, Int32 scale) 8 { 9 QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L); 10 QrCode qrCode = new QrCode(); 11 qrEncoder.TryEncode(text, out qrCode); 12 13 Bitmap img = new Bitmap(qrCode.Matrix.Width * scale, qrCode.Matrix.Height * scale); 14 img.SetResolution(180f, 180f); 15 Graphics gdiobj = Graphics.FromImage(img); 16 gdiobj.CompositingQuality = CompositingQuality.HighQuality; 17 gdiobj.SmoothingMode = SmoothingMode.HighQuality; 18 gdiobj.InterpolationMode = InterpolationMode.HighQualityBicubic; 19 gdiobj.PixelOffsetMode = PixelOffsetMode.HighQuality; 20 21 for (Int32 i = 0; i < qrCode.Matrix.Height; i++) 22 { 23 for (Int32 j = 0; j < qrCode.Matrix.Width; j++) 24 { 25 if (qrCode.Matrix.InternalArray[i, j]) 26 { 27 gdiobj.FillRectangle(new SolidBrush(Color.Black), i * scale, j * scale, scale, scale); 28 } 29 } 30 } 31 32 System.Drawing.Imaging.EncoderParameters ep = new System.Drawing.Imaging.EncoderParameters(1); 33 ep.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 800L); 34 35 System.Drawing.Imaging.ImageCodecInfo ici = GetEncoder(ImageFormat.Png); 36 37 if (ici != null) 38 { 39 img.Save(output_path, ici, ep); 40 } 41 else 42 { 43 img.Save(output_path, ImageFormat.Png); 44 } 45 img.Dispose(); 46 gdiobj.Dispose(); 47 }
比例的缩放没写好
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