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  • 使用Zxing.net实现asp.net mvc二维码功能

    新建一个html辅助类

     public static class HtmlHelperExtensions
        {
            public static IHtmlString GenerateRelayQrCode(this HtmlHelper html,string qrValue,int height = 250, int width = 250, int margin = 0)
            {
                var barcodeWriter = new BarcodeWriter
                {
                    Format = BarcodeFormat.QR_CODE,
                    Options = new EncodingOptions
                    {
                        Height = height,  
                        Width = width,
                        Margin = margin
                    }
                };
    
                using (var bitmap = barcodeWriter.Write(qrValue))
                using (var stream = new MemoryStream())
                {
                    bitmap.Save(stream, ImageFormat.Gif);
    
                    var img = new TagBuilder("img");
                    img.MergeAttribute("alt", "your alt tag");
                    img.Attributes.Add("src", String.Format("data:image/gif;base64,{0}",
                        Convert.ToBase64String(stream.ToArray())));
    
                    return MvcHtmlString.Create(img.ToString(TagRenderMode.SelfClosing));
                }
            }
    
        }

    asp.net mvc view中调用

    @Html.GenerateRelayQrCode("a")

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  • 原文地址:https://www.cnblogs.com/david1989/p/3674415.html
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