.NET Core(C#)使用ZXing.Net生成条码(Barcode)和二维码(QR code)图片及示例代码

1、通过Nuget安装引用ZXing.Net

1）使用Nuget界面管理器

搜索“ZXing.Net.Bindings.ZKWeb.System.Drawing”,在列表中分别找到它，点击"安装"

相关文档：VS(Visual Studio)中Nuget的使用

2）使用Package Manager命令安装

PM> Install-Package ZXing.Net.Bindings.ZKWeb.System.Drawing

3）使用.NET CLI命令安装

> dotnet add package ZXing.Net.Bindings.ZKWeb.System.Drawing

2、命名空间

using System;
using System.IO;
using System.DrawingCore;
using ZXing.Common;
using ZXing;
using ZXing.QrCode;
using ZXing.ZKWeb;

3、使用ZXing.Net生成条码图片

/// 
///  生成条形码/// 
/// 条码信息/// 生成条码图片文件名/// 宽度/// 高度public static void CreateBarCode(string message, string gifFileName, int width, int height){    if (string.IsNullOrWhiteSpace(message))    {        return;    }    var w = new ZXing.OneD.CodaBarWriter();    BitMatrix b = w.encode(message, BarcodeFormat.CODE_128, width, height);    var zzb = new ZXing.ZKWeb.BarcodeWriter();    zzb.Options = new EncodingOptions()    {        Margin = 3,        PureBarcode = false    };    string dir = Path.GetDirectoryName(gifFileName);    if (!Directory.Exists(dir))    {        Directory.CreateDirectory(dir);    }    Bitmap b2 = zzb.Write(b);    b2.Save(gifFileName, ImageFormat.Gif);    b2.Dispose();}

4、使用ZXing.Net生成二维码图片

/// 
/// 生成二维码返回byte数组/// 
/// /// /// /// public static byte[] CreateCodeBytes(string message, int width = 600, int height = 600){    int heig = width;    if (width > height)    {        heig = height;        width = height;    }    if (string.IsNullOrWhiteSpace(message))    {        return null;    }    var w = new QRCodeWriter();    BitMatrix b = w.encode(message, BarcodeFormat.QR_CODE, width, heig);    var zzb = new BarcodeWriter();    zzb.Options = new EncodingOptions()    {        Margin = 0,    };    Bitmap b2 = zzb.Write(b);    byte[] bytes = BitmapToArray(b2);    return bytes;}//将Bitmap  写为byte[]的方法public static byte[] BitmapToArray(Bitmap bmp){    byte[] byteArray = null;    using (MemoryStream stream = new MemoryStream())    {        bmp.Save(stream, ImageFormat.Png);        byteArray = stream.GetBuffer();    }    return byteArray;}