分享ASP.NET用ThoughtWorks.QRCode和QrCode.Net生成二维码两种方式

        Image img = Image.FromStream(ms);
        string filename = DateTime.Now.ToString("yyyymmddhhmmss");
        string path = Server.MapPath("~/image/") + filename + ".png";
        img.Save(path);

        Response.End();
    } 

}

/// <summary>
/// 获取二维码
/// </summary>
/// <param name="strContent">待编码的字符</param>
/// <param name="ms">输出流</param>
///<returns>True if the encoding succeeded, false if the content is empty or too large to fit in a QR code</returns>
public static bool GetQRCode(string strContent, MemoryStream ms)
{
    ErrorCorrectionLevel Ecl = ErrorCorrectionLevel.M; //误差校正水平
    string Content = strContent;//待编码内容
    QuietZoneModules QuietZones = QuietZoneModules.Two;  //空白区域
    int ModuleSize = 12;//大小
    var encoder = new QrEncoder(Ecl);
    QrCode qr;
    if (encoder.TryEncode(Content, out qr))//对内容进行编码，并保存生成的矩阵
    {
        var render = new GraphicsRenderer(new FixedModuleSize(ModuleSize, QuietZones));
        render.WriteToStream(qr.Matrix, ImageFormat.Png, ms);
    }
    else
    {
        return false;
    }
    return true;
}