private void GenerateSvg(TagHelperOutput output, string content, BarcodeFormat barcodeformat, int width, int height, int margin, string alt)
        {
            var qrWriter = new ZXing.BarcodeWriterSvg
            {
                Format  = barcodeformat,
                Options = new QrCodeEncodingOptions {
                    Height = height, Width = width, Margin = margin
                }
            };


            var svgImage = qrWriter.Write(content);

            output.TagName = "img";
            output.Attributes.Clear();
            output.Attributes.Add("width", svgImage.Width);
            output.Attributes.Add("height", svgImage.Height);
            output.Attributes.Add("alt", alt);
            output.Attributes.Add("src", new Microsoft.AspNetCore.Html.HtmlString(
                                      String.Format("data:image/svg+xml;{0}", svgImage.Content)));
        }
Beispiel #2
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        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            if (String.IsNullOrEmpty(this.Content))
            {
                return;
            }
            var encodingOpts = this.CreateOptions();
            var qrWriter     = new ZXing.BarcodeWriterSvg
            {
                Format  = this.ConvertBarcodeFormat(this.BarcodeFormat),
                Options = encodingOpts,
            };
            var svgImage = qrWriter.Write(this.Content);
            var base64   = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(svgImage.Content));
            var src      = $"data:image/svg+xml;base64,{base64}";

            output.TagName = "img";
            output.Attributes.Clear();
            output.Attributes.Add("width", this.Width);
            output.Attributes.Add("height", this.Height);
            output.Attributes.Add("alt", this.Alt);
            output.Attributes.Add("src", src);
        }
Beispiel #3
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        public static void Main(string[] args)
        {
            var myIp = GetLocalIPv4(NetworkInterfaceType.Ethernet);

            if (string.IsNullOrWhiteSpace(myIp))
            {
                myIp = GetLocalIPv4(NetworkInterfaceType.Wireless80211);
            }
            else if (string.IsNullOrWhiteSpace(myIp))
            {
                myIp = "127.0.0.1";
            }
            Console.WriteLine(myIp);

            var w = new ZXing.BarcodeWriterSvg();

            w.Format = BarcodeFormat.QR_CODE;
            var image = w.Write($"http://{myIp}:54856");

            System.IO.Directory.CreateDirectory(System.IO.Path.Combine(".", "wwwroot", "images"));
            System.IO.File.WriteAllText(System.IO.Path.Combine(".", "wwwroot", "images", "barcode.svg"), image.Content);
            BuildWebHost(args).Run();
        }