kunshan-bzfm-mes-backend/Infrastructure/Helper/PrintHelper.cs

using Microsoft.AspNetCore.Hosting.Server;
using System;
using System.IO;
using ZXing;
using ZXing.Common;
using ZXing.QrCode;
//using ZXing.ZKWeb.System.Drawing;


namespace DOAN.Infrastructure.Helper;

public class PrintHelper
{
    /// <summary>
    /// 打印条形码
    /// </summary>
    /// <param name="message"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    //public static byte[] CreateBarCode(string message, int width, int height)
    //{
    //    if (string.IsNullOrWhiteSpace(message))
    //    {
    //        return null;
    //    }
    //    var w = new ZXing.OneD.Code128Writer();
    //    BitMatrix b = w.encode(message, BarcodeFormat.CODE_128, width, height);
    //    var zzb = new ZXing.ZKWeb.BarcodeWriter();
    //    zzb.Options = new EncodingOptions()
    //    {
    //        Margin = 0,
    //        PureBarcode = false
    //    };
        
    //    Bitmap b2 = zzb.Write(b);
      
        
    //    using (var ms = new System.IO.MemoryStream())
    //    {
    //        b2.Save(ms, ImageFormat.Png);
    //        var bytes = ms.ToArray();

    //        return bytes;
    //    }
    
       
    //}

    /// <summary>
    /// 打印二维码
    /// https://ironsoftware.com/csharp/barcode/blog/compare-to-other-components/zxing-net-generate-qr-code-barcode-alternatives/
    /// </summary>
    /// <param name="message"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static byte[] CreateQcCode(string message, int width, int height)
    {
        if (string.IsNullOrWhiteSpace(message))
        {
            return null;
        }
        Byte[] byteArray;
        var margin = 0;
        var qrCodeWriter = new ZXing.BarcodeWriterPixelData
        {
            Format = ZXing.BarcodeFormat.QR_CODE,
            Options = new QrCodeEncodingOptions
            {
                Height = height,
                Width = width,
                Margin = margin
            }
        };
        var pixelData = qrCodeWriter.Write(message);
        // creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
        using (var bitmap = new System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb))
        {
            using (var ms = new MemoryStream())
            {
                var bitmapData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
                try
                {
                    // we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
                    System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length);
                }
                finally
                {
                    bitmap.UnlockBits(bitmapData);
                }
             
                bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                byteArray = ms.ToArray();
            }
        }
        return byteArray;


    }


}