Mvc 使用zxing.net生成二维码



using System;

using System.Drawing.Imaging;

using System.IO;

using System.Web;

using System.Web.Mvc;

using System.Web.WebPages.Html;

using ZXing;

using ZXing.Common;

publicstaticclassHtmlHelperExtensions

{

publicstaticIHtmlString GenerateRelayQrCode(this System.Web.Mvc.HtmlHelper helper, string qrValue, int height = 250, int width = 250, int margin = 0)

{

var barcodeWriter = newBarcodeWriter

{

Format =BarcodeFormat.QR_CODE,

Options =newEncodingOptions

{

Height = height,

Width = width,

Margin = margin

}

};

using (var bitmap = barcodeWriter.Write(qrValue))

using (var stream = newMemoryStream())

{

bitmap.Save(stream,ImageFormat.Gif);

var img = newTagBuilder("img");

img.MergeAttribute("alt","your alt tag");

img.Attributes.Add("src",String.Format("data:image/gif;base64,{0}",

Convert.ToBase64String(stream.ToArray())));

returnnewHtmlString(img.ToString(TagRenderMode.SelfClosing));

}

}

}

在页面上可以这样调用    @Html.GenerateRelayQrCode(http://write.blog.csdn.net/postedit)