/// <summary>
/// 生成带Logo二维码
/// </summary>
/// <param name="content">内容</param>
/// <param name="iconPath">logo路径</param>
/// <param name="moduleSize">二维码的大小</param>
/// <returns>输出流</returns>
public static MemoryStream GetQRCode(string content, string iconPath, int moduleSize = 15)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
QrCode qrCode = qrEncoder.Encode(content);
GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(moduleSize, QuietZoneModules.Two), Brushes.Black, Brushes.White);
DrawingSize dSize = render.SizeCalculator.GetSize(qrCode.Matrix.Width);
Bitmap map = new Bitmap(dSize.CodeWidth, dSize.CodeWidth);
Graphics g = Graphics.FromImage(map);
render.Draw(g, qrCode.Matrix);
//追加Logo图片 ,注意控制Logo图片大小和二维码大小的比例
//PS:追加的图片过大超过二维码的容错率会导致信息丢失,无法被识别
Image img = Image.FromFile(SysHelper.GetPath(iconPath));
Point imgPoint = new Point((map.Width - img.Width) / 2, (map.Height - img.Height) / 2);
g.DrawImage(img, imgPoint.X, imgPoint.Y, img.Width, img.Height);
MemoryStream memoryStream = new MemoryStream();
map.Save(memoryStream, ImageFormat.Jpeg);
return(memoryStream);
//生成图片的代码： map.Save(fileName, ImageFormat.Jpeg);//fileName为存放的图片路径
}
/// <summary>
/// 创建根节点对象
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
private static XmlElement CreateRootElement(string xmlFilePath)
{
//定义变量，表示XML文件的绝对路径
string filePath = "";
//获取XML文件的绝对路径
filePath = SysHelper.GetPath(xmlFilePath);
//创建XmlDocument对象
XmlDocument xmlDocument = new XmlDocument();
//加载XML文件
xmlDocument.Load(filePath);
//返回根节点
return(xmlDocument.DocumentElement);
}
/// <summary>
/// 实例化XmlHelper对象
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
public XmlHelper(string xmlFilePath)
{
//获取XML文件的绝对路径
_filePath = SysHelper.GetPath(xmlFilePath);
}