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生成二维码图片

添加NuGet包引用：到浏览 搜索，添加引用 ZXing.Net 包 安装。

代码：

废话不都说，直接上代码，添加一个方法名为：QRCode，text参数是二维码内容。

public void QRCode(string text)
{
    //获取中间图片logo
    Bitmap logo = new Bitmap(Request.PhysicalApplicationPath + "templets/yixin/images/wmdfw1.jpg");

    BarcodeWriter writer = new BarcodeWriter();
    writer.Format = BarcodeFormat.QR_CODE;
    //生成二维码
    QrCodeEncodingOptions options = new QrCodeEncodingOptions();
    options.DisableECI = true;
    options.CharacterSet = "UTF-8";
    options.Width = 258;
    options.Height = 258;
    options.Margin = 1;
    writer.Options = options;

    Bitmap bmpimg = writer.Write(text);

    //将二维码插入图片
    using (Graphics myGraphic = Graphics.FromImage(bmpimg))
    {
        int Width = 60;
        int Height = 60;
        int middleL = (bmpimg.Width - Width) / 2;
        int middleT = (bmpimg.Height - Height) / 2;
        myGraphic.DrawImage(logo, middleL, middleT, Width, Height);
    }

    //保存成图片
    string filename = Request.PhysicalApplicationPath + "/templets/yixin/images/wxkf.png";
    bmpimg.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
    bmpimg.Dispose();
}
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