using ThoughtWorks.QRCode.Codec;

 1　　　　　　　　QRCodeEncoder codeEncoder = new QRCodeEncoder();
 2 
 3             Bitmap image = codeEncoder.Encode("二維碼連結", Encoding.UTF8);
 4 
 5             string path11 = $"/img/{Guid.NewGuid().ToString("N")}" + ".jpg";
 6             string physicPath = GetAbsolutePath($"
 
~{path11}");
 7             string dir = Path.GetDirectoryName(physicPath);
 8             if (!Directory.Exists(dir))
 9                 Directory.CreateDirectory(dir);
10             string newpath = $"{_configuration["WebRootUrl"]}{path11}";
11             string ppth = _hostingEnvironment.WebRootPath + path11;
 
12 
13             image.Save(ppth, System.Drawing.Imaging.ImageFormat.Jpeg);

_configuration["WebRootUrl"] ：介面根地址

_hostingEnvironment.WebRootPath:絕對路徑

/***********************************************************************************************/

返回byte[] 型別

 1 　　　　　　　 /// <param name="Content">
 
內容文字</param>
 2             /// <param name="QRCodeEncodeMode">二維碼編碼方式</param>
 3             /// <param name="QRCodeErrorCorrect">糾錯碼等級</param>
 4             /// <param name="QRCodeVersion">二維碼版本號 0-40</param>
 5             /// <param name="QRCodeScale">每個小方格的預設寬度（畫素），正整數</param>
 6             /// <param name="size">圖片尺寸（畫素），0表示不設定</param>
 7             /// <param name="border">圖片白邊（畫素），當size大於0時有效</param>
 8             QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
 9             qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
10             qrCodeEncoder.QRCodeScale = 12;
11 
12             qrCodeEncoder.QRCodeVersion = 0;//二維碼版本號 0-40
13             qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
14             String data = "連結";
15             System.Drawing.Bitmap image = qrCodeEncoder.Encode(data);
16             System.IO.MemoryStream MStream = new System.IO.MemoryStream();
17             image.Save(MStream, System.Drawing.Imaging.ImageFormat.Jpeg);
18 
19             return MStream.ToArray();