C# CodeHelper

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using BarcodeLib;

using Gma.QrCodeNet.Encoding;

using Gma.QrCodeNet.Encoding.Windows.Render;

using System.Drawing.Imaging;

using System.IO;

namespace Utils

{

    /// <summary>

    /// 条形码/二维码帮助类

    /// </summary>

    public class CodeHelper

    {

        /// <summary>

        /// 生成条形码

        /// </summary>

        /// <param name="Code"></param>

        public static void CreateBarCode(string Code, string fileName)

        {

            BarcodeLib.Barcode barcode = new BarcodeLib.Barcode()

            {

                IncludeLabel = true,

                Alignment = AlignmentPositions.CENTER,

                Width = ,

                Height = ,

                RotateFlipType = RotateFlipType.RotateNoneFlipNone,

                BackColor = Color.White,

                ForeColor = Color.Black,

            };

            System.Drawing.Image img = barcode.Encode(TYPE.CODE128B, Code);

            img.Save(fileName, System.Drawing.Imaging.ImageFormat.Jpeg);

            //using (System.IO.MemoryStream ms = new System.IO.MemoryStream())

            //{

                //img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

                //HttpContext.Current.Response.ClearContent();

                //HttpContext.Current.Response.ContentType = "image/png";

                //HttpContext.Current.Response.BinaryWrite(ms.ToArray());

            //}

        }

        /// <summary>

        /// 生成二维码

        /// </summary>

        /// <param name="data">二维码内容</param>

        /// <param name="filename">生成的图片路径名称（如：D:\123.png）</param>

        /// <param name="moduleSize">图片大小</param>

        /// <returns></returns>

        public static void CreateQRCode(string data, string filename, int moduleSize = )

        {

            QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);

            QrCode qrCode = new QrCode();

            MemoryStream ms = new MemoryStream();

            qrEncoder.TryEncode(data, out qrCode);

            //GraphicsRenderer renderer = new GraphicsRenderer(new FixedModuleSize(moduleSize, QuietZoneModules.Two));

            //renderer.WriteToStream(qrCode.Matrix, ImageFormat.Png, ms);

            //System.Drawing.Image img = System.Drawing.Image.FromStream(ms);

            //img.Save(filename, System.Drawing.Imaging.ImageFormat.Png);

            GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(moduleSize, QuietZoneModules.Two), Brushes.Black, Brushes.White);

            using (FileStream stream = new FileStream(filename, FileMode.Create))

            {

                render.WriteToStream(qrCode.Matrix, ImageFormat.Png, stream);

            }

        }

        /// <summary>

        /// 生成带Logo的二维码

        /// </summary>

        /// <param name="data"></param>

        /// <param name="filename"></param>

        /// <param name="logPath"></param>

        /// <param name="moduleSize"></param>

        public static void CreateQRCodeHasLog(string data, string filename, string logPath, int moduleSize = )

        {

            QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);

            QrCode qrCode = qrEncoder.Encode(data);

            //保存成png文件

            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

            System.Drawing.Image img = System.Drawing.Image.FromFile(logPath);

            Point imgPoint = new Point((map.Width - img.Width) / , (map.Height - img.Height) / );

            g.DrawImage(img, imgPoint.X, imgPoint.Y, img.Width, img.Height);

            map.Save(filename, ImageFormat.Png);

        }

    }

}