csharp二维码支持库zXing4.0版本BarcodeWriterwriter=newBarcodeWriter();writer.Format=BarcodeFormat.QR_CODE;writer.Options.Hints.Add(EncodeHintType.CHARACTER_SET,"UTF-8");//编码问题writer.Options.Hints.Add(EncodeHintType.ERROR_CORRECTION,ZXing.QrCode.Internal.ErrorCorrectionL