Masuit.Tools.Excel 1.2.3-beta5

This is a prerelease version of Masuit.Tools.Excel.
There is a newer version of this package available.
See the version list below for details.
dotnet add package Masuit.Tools.Excel --version 1.2.3-beta5                
NuGet\Install-Package Masuit.Tools.Excel -Version 1.2.3-beta5                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Masuit.Tools.Excel" Version="1.2.3-beta5" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Masuit.Tools.Excel --version 1.2.3-beta5                
#r "nuget: Masuit.Tools.Excel, 1.2.3-beta5"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Masuit.Tools.Excel as a Cake Addin
#addin nuget:?package=Masuit.Tools.Excel&version=1.2.3-beta5&prerelease

// Install Masuit.Tools.Excel as a Cake Tool
#tool nuget:?package=Masuit.Tools.Excel&version=1.2.3-beta5&prerelease                

Masuit.Tools

LICENSE nuget nuget codeSize language <a href="https://gitee.com/masuit/Masuit.Tools"><img src="https://gitee.com/static/images/logo-black.svg" height="24"></a> <a href="https://github.com/ldqk/Masuit.Tools"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Font_Awesome_5_brands_github.svg/54px-Font_Awesome_5_brands_github.svg.png" height="24"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/GitHub_logo_2013.svg/128px-GitHub_logo_2013.svg.png" height="24"></a>
包含一些常用的操作类,大都是静态类,加密解密,反射操作,权重随机筛选算法,分布式短id,表达式树,linq扩展,文件压缩,多线程下载和FTP客户端,硬件信息,字符串扩展方法,日期时间扩展操作,中国农历,大文件拷贝,图像裁剪,验证码,断点续传,集合扩展、Excel导出等常用封装。诸多功能集一身,代码量不到2MB!
官网教程
Masuit Tools

项目开发模式:日常代码积累+网络搜集
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本项目已得到JetBrains的支持!

<img src="https://www.jetbrains.com/shop/static/images/jetbrains-logo-inv.svg" height="100">

Star趋势

<img src="https://starchart.cc/ldqk/Masuit.Tools.svg">

请注意:

一旦使用本开源项目以及引用了本项目或包含本项目代码的公司因为违反劳动法(包括但不限定非法裁员、超时用工、雇佣童工等)在任何法律诉讼中败诉的,一经发现,本项目作者有权利追讨本项目的使用费(公司工商注册信息认缴金额的2-5倍作为本项目的授权费),或者直接不允许使用任何包含本项目的源代码!任何性质的外包公司996公司需要使用本类库,请联系作者进行商业授权!其他企业或个人可随意使用不受限。996那叫用人,也是废人。8小时工作制才可以让你有时间自我提升,将来有竞争力。反对996,人人有责!

建议开发环境

操作系统:Windows 10 1903及以上版本
开发工具:VisualStudio2019 v16.5及以上版本
SDK:.Net Core 2.1.0及以上所有版本

安装程序包

基础功能包

.NET Framework ≥ 4.6.1
PM> Install-Package Masuit.Tools.Net
.NET Standard ≥ 2.1 或只想使用一些基本功能

通用项目推荐首选包

PM> Install-Package Masuit.Tools.Abstraction
.NET Core ≥ 2.1

.NET Core项目推荐首选包

PM> Install-Package Masuit.Tools.Core
.NET Framework 4.5特供版

请注意:这是.NET Framework 4.5的专用版本,相比4.6.1及.NET Core的版本,阉割了Redis、HTML、文件压缩、ASP.NET扩展、硬件监测、Session扩展等一些功能。如果你的项目版本高于4.5,请务必使用上述版本的包,以享受完整的功能体验!

PM> Install-Package Masuit.Tools.Net45

增值包

Masuit.Tools.AspNetCore

AspNetCore项目推荐首选包
ASP.NET Core Web专用包,包含Masuit.Tools.Core的全部功能,并且增加了一些对ASP.NET Core Web功能的额外支持。

Masuit.Tools.Excel

Excel导入导出的专用独立包

Masuit.Tools.NoSQL.MongoDBClient

mongodb的封装操作类独立包

为工具库注册配置

工具库需要用到外部配置节,.NET Framework项目配置在web.config/app.config的AppSettings配置节中,.NET Core项目配置在appsettings.json中:

  1. EmailDomainWhiteList,邮箱校验需要用到的白名单域名,英文逗号分隔,每个元素支持正则表达式,若未配置,则不启用邮箱校验白名单,示例: "^\\w{1,5}@qq.com,^\\w{1,5}@163.com,^\\w{1,5}@gmail.com,^\\w{1,5}@outlook.com"
  2. EmailDomainBlockList,邮箱校验需要用到的黑名单域名,英文逗号分隔,每个元素支持正则表达式,且黑名单优先级高于白名单,若未配置,则不启用邮箱校验黑白名单
public Startup(IConfiguration configuration)
{
    configuration.AddToMasuitTools(); // 若未调用,则默认自动尝试加载appsettings.json
}

特色功能示例代码

在线体验

https://replit.com/@ldqk/MasuitToolsDemo?v=1#main.cs

1.检验字符串是否是Email、手机号、URL、IP地址、身份证号等

bool isEmail="337845818@qq.com".MatchEmail(); // 可在appsetting.json中添加EmailDomainWhiteList和EmailDomainBlockList配置邮箱域名黑白名单,逗号分隔,如"EmailDomainBlockList": "^\\w{1,5}@qq.com,^\\w{1,5}@163.com,^\\w{1,5}@gmail.com,^\\w{1,5}@outlook.com",
bool isInetAddress = "114.114.114.114".MatchInetAddress();
bool isUrl = "http://ldqk.org/20/history".MatchUrl();
bool isPhoneNumber = "15205201520".MatchPhoneNumber();
bool isIdentifyCard = "312000199502230660".MatchIdentifyCard();// 校验中国大陆身份证号
bool isCNPatentNumber = "200410018477.9".MatchCNPatentNumber(); // 校验中国专利申请号或专利号,是否带校验位,校验位前是否带“.”,都可以校验,待校验的号码前不要带CN、ZL字样的前缀

2.硬件监测(仅支持Windows)

float load = SystemInfo.CpuLoad;// 获取CPU占用率
long physicalMemory = SystemInfo.PhysicalMemory;// 获取物理内存总数
long memoryAvailable = SystemInfo.MemoryAvailable;// 获取物理内存可用率
double freePhysicalMemory = SystemInfo.GetFreePhysicalMemory();// 获取可用物理内存
double temperature = SystemInfo.GetCPUTemperature();// 获取CPU温度
int cpuCount = SystemInfo.GetCpuCount();// 获取CPU核心数
IList<string> ipAddress = SystemInfo.GetIPAddress();// 获取本机所有IP地址
string localUsedIp = SystemInfo.GetLocalUsedIP();// 获取本机当前正在使用的IP地址
IList<string> macAddress = SystemInfo.GetMacAddress();// 获取本机所有网卡mac地址
string osVersion = SystemInfo.GetOsVersion();// 获取操作系统版本
RamInfo ramInfo = SystemInfo.GetRamInfo();// 获取内存信息
var cpuSN=SystemInfo.GetCpuInfo()[0].SerialNumber; // CPU序列号
var driveSN=SystemInfo.GetDiskInfo()[0].SerialNumber; // 硬盘序列号

// 快速方法
var cpuInfos = CpuInfo.Locals; // 快速获取CPU的信息
var ramInfo = RamInfo.Local; // 快速获取内存的信息
var diskInfos = DiskInfo.Locals; // 快速获取硬盘的信息
var biosInfo = BiosInfo.Local; // 快速获取主板的信息

3.大文件操作

FileStream fs = new FileStream(@"D:\boot.vmdk", FileMode.OpenOrCreate, FileAccess.ReadWrite);
{
        //fs.CopyToFile(@"D:\1.bak");//同步复制大文件
        fs.CopyToFileAsync(@"D:\1.bak");//异步复制大文件
        string md5 = fs.GetFileMD5Async().Result;//异步获取文件的MD5
        string sha1 = fs.GetFileSha1();//异步获取文件的SHA1
}
memoryStream.SaveFile("filename"); // 将内存流转储成文件

4.html的防XSS处理:

string html = @"<link href='/Content/font-awesome/css' rel='stylesheet'/>
        
        <script src='/Scripts/modernizr'></script>
        <div id='searchBox' role='search'>
        <form action='/packages' method='get'>
        <span class='user-actions'><a href='/users/account/LogOff'>退出</a></span>
        <input name='q' id='searchBoxInput'/>
        <input id='searchBoxSubmit' type='submit' value='Submit' />
        </form>
        </div>";
string s = html.HtmlSantinizerStandard();//清理后:<div><span><a href="/users/account/LogOff">退出</a></span></div>

5.整理Windows系统的内存:

类似于各大系统优化软件的加速球功能

Windows.ClearMemorySilent();

6.任意进制转换

可用于生成短id,短hash,随机字符串等操作,纯数学运算。

NumberFormater nf = new NumberFormater(36);//内置2-62进制的转换
//NumberFormater nf = new NumberFormater("0123456789abcdefghijklmnopqrstuvwxyz");// 自定义进制字符,可用于生成验证码
string s36 = nf.ToString(12345678);
long num = nf.FromString("7clzi");
Console.WriteLine("12345678的36进制是:" + s36); // 7clzi
Console.WriteLine("36进制的7clzi是:" + num); // 12345678
var s = new NumberFormater(62).ToString(new Random().Next(100000, int.MaxValue)); //配合随机数生成随机字符串
//扩展方法形式调用
var bin=12345678.ToBinary(36);//7clzi
var num="7clzi".FromBinary(36);//12345678
//超大数字的进制转换
var num = "E6186159D38CD50E0463A55E596336BD".FromBinaryBig(16);
Console.WriteLine(num); // 十进制:305849028665645097422198928560410015421
Console.WriteLine(num.ToBinary(64)); // 64进制:3C665pQUPl3whzFlVpoPqZ,22位长度
Console.WriteLine(num.ToBinary(36)); // 36进制:dmed4dkd5bhcg4qdktklun0zh,25位长度

7.纳秒级性能计时器

HiPerfTimer timer = HiPerfTimer.StartNew();
for (int i = 0; i < 100000; i++)
{
    //todo
}
timer.Stop();
Console.WriteLine("执行for循环100000次耗时"+timer.Duration+"s");
double time = HiPerfTimer.Execute(() =>
{
    for (int i = 0; i < 100000; i++)
    {
        //todo
    }
});
Console.WriteLine("执行for循环100000次耗时"+time+"s");

8.产生分布式唯一有序短id(雪花id)

var sf = SnowFlake.GetInstance();
string token = sf.GetUniqueId();// rcofqodori0w
string shortId = sf.GetUniqueShortId(8);// qodw9728
var set = new HashSet<string>();
double time = HiPerfTimer.Execute(() =>
{
    for (int i = 0; i < 1000000; i++)
    {
        set.Add(SnowFlake.GetInstance().GetUniqueId());
    }
});
Console.WriteLine(set.Count == 1000000); //True
Console.WriteLine("产生100w个id耗时" + time + "s"); //2.6891495s

9.农历转换

ChineseCalendar.CustomHolidays.Add(DateTime.Parse("2018-12-31"),"元旦节");//自定义节假日
ChineseCalendar today = new ChineseCalendar(DateTime.Parse("2018-12-31"));
Console.WriteLine(today.ChineseDateString);// 二零一八年十一月廿五
Console.WriteLine(today.AnimalString);// 生肖:狗
Console.WriteLine(today.GanZhiDateString);// 干支:戊戌年甲子月丁酉日
Console.WriteLine(today.DateHoliday);// 获取按公历计算的节假日
...

10.Linq表达式树扩展

Expression<Func<string, bool>> where1 = s => s.StartsWith("a");
Expression<Func<string, bool>> where2 = s => s.Length > 10;
Func<string, bool> func = where1.And(where2)
    .AndIf(!string.IsNullOrEmpty(name),s=>s==name)
    .Compile(); // And和AndIf可供选择,满足条件再执行And
bool b=func("abcd12345678");//true
Expression<Func<string, bool>> where1 = s => s.StartsWith("a");
Expression<Func<string, bool>> where2 = s => s.Length > 10;
Func<string, bool> func = where1
    .Or(where2)
    .OrIf(!string.IsNullOrEmpty(name),s=>s==name)
    .Compile(); // Or和OrIf可供选择,满足条件再执行Or
bool b=func("abc");// true
queryable.WhereIf(!string.IsNullOrEmpty(name),e=>e.Name==name)
    .WhereIf(()=> age.HasValue,e=>e.Age>=age); // IQueryable的WhereIf扩展函数,满足条件再执行Where

11.模版引擎

var tmp = new Template("{{name}},你好!");
tmp.Set("name", "万金油");
string s = tmp.Render();//万金油,你好!
var tmp = new Template("{{one}},{{two}},{{three}}");
string s = tmp.Set("one", "1").Set("two", "2").Set("three", "3").Render();// 1,2,3
var tmp = new Template("{{name}},{{greet}}!");
tmp.Set("name", "万金油");
string s = tmp.Render();// throw 模版变量{{greet}}未被使用

12.List转Datatable

var list = new List<MyClass>()
{
    new MyClass()
    {
        Name = "张三",
        Age = 22
    },
    new MyClass()
    {
        Name = "李四",
        Age = 21
    },
    new MyClass()
    {
        Name = "王五",
        Age = 28
    }
};
var table = list.Select(c => new{姓名=c.Name,年龄=c.Age}).ToDataTable();// 将自动填充列姓名和年龄

13.文件压缩解压

.NET Framework

MemoryStream ms = SevenZipCompressor.ZipStream(new List<string>()
{
    @"D:\1.txt",
    "http://ww3.sinaimg.cn/large/87c01ec7gy1fsq6rywto2j20je0d3td0.jpg",
});//压缩成内存流
SevenZipCompressor.Zip(new List<string>()
{
    @"D:\1.txt",
    "http://ww3.sinaimg.cn/large/87c01ec7gy1fsq6rywto2j20je0d3td0.jpg",
}, zip);//压缩成zip
SevenZipCompressor.UnRar(@"D:\Download\test.rar", @"D:\Download\");//解压rar
SevenZipCompressor.Decompress(@"D:\Download\test.tar", @"D:\Download\");//自动识别解压压缩包
SevenZipCompressor.Decompress(@"D:\Download\test.7z", @"D:\Download\");

ASP.NET Core

Startup.cs

services.AddSevenZipCompressor();

构造函数注入ISevenZipCompressor

private readonly ISevenZipCompressor _sevenZipCompressor;
public Test(ISevenZipCompressor sevenZipCompressor)
{
    _sevenZipCompressor = sevenZipCompressor;
}

使用方式同.NET Framework版本

14.日志组件

LogManager.LogDirectory=AppDomain.CurrentDomain.BaseDirectory+"/logs";
LogManager.Event+=info =>
{
    //todo:注册一些事件操作
};
LogManager.Info("记录一次消息");
LogManager.Error(new Exception("异常消息"));

15.FTP客户端

FtpClient ftpClient = FtpClient.GetAnonymousClient("192.168.2.2");//创建一个匿名访问的客户端
//FtpClient ftpClient = FtpClient.GetClient("192.168.2.3","admin","123456");// 创建一个带用户名密码的客户端
ftpClient.Delete("/1.txt");// 删除文件
ftpClient.Download("/test/2.txt","D:\\test\\2.txt");// 下载文件
ftpClient.UploadFile("/test/22.txt","D:\\test\\22.txt",(sum, progress) =>
{
    Console.WriteLine("已上传:"+progress*1.0/sum);
});//上传文件并检测进度
List<string> files = ftpClient.GetFiles("/");//列出ftp服务端文件列表
...

16.多线程后台下载

var mtd = new MultiThreadDownloader("https://attachments-cdn.shimo.im/yXwC4kphjVQu06rH/KeyShot_Pro_7.3.37.7z",Environment.GetEnvironmentVariable("temp"),"E:\\Downloads\\KeyShot_Pro_7.3.37.7z",8);
mtd.Configure(req =>
 {
     req.Referer = "https://masuit.com";
     req.Headers.Add("Origin", "https://baidu.com");
});
mtd.TotalProgressChanged+=(sender, e) =>
{
    var downloader = sender as MultiThreadDownloader;
    Console.WriteLine("下载进度:"+downloader.TotalProgress+"%");
    Console.WriteLine("下载速度:"+downloader.TotalSpeedInBytes/1024/1024+"MBps");
};
mtd.FileMergeProgressChanged+=(sender, e) =>
{
    Console.WriteLine("下载完成");
};
mtd.FileMergedComplete+=(sender,e)=>{
    Console.WriteLine("文件合并完成");
};
mtd.Start();//开始下载
//mtd.Pause(); // 暂停下载
//mtd.Resume(); // 继续下载

17.Socket客户端操作类

var tcpClient = new TcpClient(AddressFamily.InterNetwork);
Socket socket = tcpClient.ConnectSocket(IPAddress.Any,5000);
socket.SendFile("D:\\test\\1.txt",false,i =>
{
    Console.WriteLine("已发送"+i+"%");
});

18.加密解密/hash

var enc="123456".MDString();// MD5
var enc="123456".MDString("abc");// MD5加盐
var enc="123456".MDString2();// MD5两次
var enc="123456".MDString2("abc");// MD5两次加盐
var enc="123456".MDString3();// MD5三次
var enc="123456".MDString3("abc");// MD5三次加盐

string aes = "123456".AESEncrypt();// AES加密为密文
string s = aes.AESDecrypt(); //AES解密为明文
string aes = "123456".AESEncrypt("abc");// AES密钥加密为密文
string s = aes.AESDecrypt("abc"); //AES密钥解密为明文

string enc = "123456".DesEncrypt();// DES加密为密文
string s = enc.DesDecrypt(); //DES解密为明文
string enc = "123456".DesEncrypt("abcdefgh");// DES密钥加密为密文
string s = enc.DesDecrypt("abcdefgh"); //DES密钥解密为明文

RsaKey rsaKey = RsaCrypt.GenerateRsaKeys();// 生成RSA密钥对
string encrypt = "123456".RSAEncrypt(rsaKey.PublicKey);// 公钥加密
string s = encrypt.RSADecrypt(rsaKey.PrivateKey);// 私钥解密

string s = "123".Crc32();// 生成crc32摘要
string s = "123".Crc64();// 生成crc64摘要
string s = "123".SHA256();// 生成SHA256摘要

19.实体校验

public class MyClass
{
    [IsEmail] //可在appsetting.json中添加EmailDomainWhiteList配置邮箱域名白名单,逗号分隔
    public string Email { get; set; }

    [IsPhone]
    public string PhoneNumber { get; set; }

    [IsIPAddress]
    public string IP { get; set; }

    [MinValue(0, ErrorMessage = "年龄最小为0岁"), MaxValue(100, ErrorMessage = "年龄最大100岁")]
    public int Age { get; set; }

    [ComplexPassword]//密码复杂度校验
    public string Password { get; set; }
    
    [EnumOf] // 检测是否是有效枚举值
    public MyEnum MyEnum { get; set; }
    
    [MinItemsCount(1)] // 检测集合元素最少1个
    public List<string> Strs { get; set; }
}

20.HTML操作

List<string> srcs = "html".MatchImgSrcs().ToList();// 获取html字符串里所有的img标签的src属性
var imgTags = "html".MatchImgTags();//获取html字符串里的所有的img标签
var str="html".RemoveHtmlTag(); // 去除html标签
...

21.DateTime扩展

double milliseconds = DateTime.Now.GetTotalMilliseconds();// 获取毫秒级时间戳
double microseconds = DateTime.Now.GetTotalMicroseconds();// 获取微秒级时间戳
double nanoseconds = DateTime.Now.GetTotalNanoseconds();// 获取纳秒级时间戳
double seconds = DateTime.Now.GetTotalSeconds();// 获取秒级时间戳
double minutes = DateTime.Now.GetTotalMinutes();// 获取分钟级时间戳
...

22.IP地址和URL

bool inRange = "192.168.2.2".IpAddressInRange("192.168.1.1","192.168.3.255");// 判断IP地址是否在这个地址段里
bool isPrivateIp = "172.16.23.25".IsPrivateIP();// 判断是否是私有地址
bool isExternalAddress = "http://baidu.com".IsExternalAddress();// 判断是否是外网的URL

//以下需要配置baiduAK
string isp = "114.114.114.114".GetISP(); // 获取ISP运营商信息
PhysicsAddress physicsAddress = "114.114.114.114".GetPhysicsAddressInfo().Result;// 获取详细地理信息对象
Tuple<string, List<string>> ipAddressInfo = "114.114.114.114".GetIPAddressInfo().Result;// 获取详细地理信息集合

23.元素去重

var list = new List<MyClass>()
{
    new MyClass()
    {
        Email = "1@1.cn"
    },
    new MyClass()
    {
        Email = "1@1.cn"
    },
    new MyClass()
    {
        Email = "1@1.cn"
    }
};
List<MyClass> classes = list.DistinctBy(c => c.Email).ToList();
Console.WriteLine(classes.Count==1);//True

24.枚举扩展

public enum MyEnum
{
    [Display(Name = "读")]
    [Description("读")]
    Read,
    
    [Display(Name = "写")]
    [Description("写")]
    Write
}
Dictionary<int, string> dic1 = typeof(MyEnum).GetDictionary();// 获取枚举值和字符串表示的字典映射
var dic2 = typeof(MyEnum).GetDescriptionAndValue();// 获取字符串表示和枚举值的字典映射
string desc = MyEnum.Read.GetDescription();// 获取Description标签
string display = MyEnum.Read.GetDisplay();// 获取Display标签的Name属性
var value = typeof(MyEnum).GetValue("Read");//获取字符串表示值对应的枚举值
string enumString = 0.ToEnumString(typeof(MyEnum));// 获取枚举值对应的字符串表示

25.定长队列和ConcurrentHashSet实现

如果是.NET5及以上,推荐使用框架自带的Channel实现该功能

LimitedQueue<string> queue = new LimitedQueue<string>(32);// 声明一个容量为32个元素的定长队列
ConcurrentLimitedQueue<string> queue = new ConcurrentLimitedQueue<string>(32);// 声明一个容量为32个元素的线程安全的定长队列
var set = new ConcurrentHashSet<string>(); // 用法和hashset保持一致

26.反射操作

MyClass myClass = new MyClass();
PropertyInfo[] properties = myClass.GetProperties();// 获取属性列表
myClass.SetProperty("Email","1@1.cn");//给对象设置值
myClass.DeepClone(); // 对象深拷贝,带嵌套层级的

27.获取线程内唯一对象

CallContext<T>.SetData("db",dbContext);//设置线程内唯一对象
CallContext<T>.GetData("db");//获取线程内唯一对象

28.asp.net core 获取静态的HttpContext对象

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    // ...
    services.AddStaticHttpContext();
    // ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    // ...
    app.UseStaticHttpContext();
    // ...
}
public async Task<IActionResult> Index()
{
    HttpContext context = HttpContext2.Current;
}

29.邮件发送

new Email()
{
    SmtpServer = "smtp.masuit.com",// SMTP服务器
    SmtpPort = 25, // SMTP服务器端口
    EnableSsl = true,//使用SSL
    Username = "admin@masuit.com",// 邮箱用户名
    Password = "123456",// 邮箱密码
    Tos = "10000@qq.com,10001@qq.com", //收件人
    Subject = "测试邮件",//邮件标题
    Body = "你好啊",//邮件内容
}.SendAsync(s =>
{
    Console.WriteLine(s);// 发送成功后的回调
});// 异步发送邮件

30.图像的简单处理

ImageUtilities.CompressImage(@"F:\src\1.jpg", @"F:\dest\2.jpg");//无损压缩图片

"base64".SaveDataUriAsImageFile();// 将Base64编码转换成图片

Image image = Image.FromFile(@"D:\1.jpg");
image.MakeThumbnail(@"D:\2.jpg", 120, 80, ThumbnailCutMode.LockWidth);//生成缩略图

Bitmap bmp = new Bitmap(@"D:\1.jpg");
Bitmap newBmp = bmp.BWPic(bmp.Width, bmp.Height);//转换成黑白
Bitmap newBmp = bmp.CutAndResize(new Rectangle(0, 0, 1600, 900), 160, 90);//裁剪并缩放
bmp.RevPicLR(bmp.Width, bmp.Height);//左右镜像
bmp.RevPicUD(bmp.Width, bmp.Height);//上下镜像

var marker=ImageWatermarker(stream);
stream=maker.AddWatermark("水印文字","字体文件",字体大小,color,水印位置,边距); // 给图片添加水印
stream=maker.AddWatermark(水印图片,水印位置,边距,字体大小,字体); // 给图片添加水印

// 图像相似度对比
var hasher = new ImageHasher();
var hash1 = hasher.DifferenceHash256("图片1"); // 使用差分哈希算法计算图像的256位哈希
var hash2 = hasher.DifferenceHash256("图片2"); // 使用差分哈希算法计算图像的256位哈希
//var hash1 = hasher.AverageHash64("图片1"); // 使用平均值算法计算图像的64位哈希
//var hash2 = hasher.AverageHash64("图片2"); // 使用平均值算法计算图像的64位哈希
//var hash1 = hasher.DctHash("图片1"); // 使用DCT算法计算图像的64位哈希
//var hash2 = hasher.DctHash("图片2"); // 使用DCT算法计算图像的64位哈希
//var hash1 = hasher.MedianHash64("图片1"); // 使用中值算法计算给定图像的64位哈希
//var hash2 = hasher.MedianHash64("图片2"); // 使用中值算法计算给定图像的64位哈希
var sim=ImageHasher.Compare(hash1,hash2); // 图片的相似度,范围:[0,1]

var imageFormat=stream.GetImageType(); // 获取图片的真实格式

31.随机数

Random rnd = new Random();
int num = rnd.StrictNext();//产生真随机数
double gauss = rnd.NextGauss(20,5);//产生正态高斯分布的随机数
var s = new NumberFormater(62).ToString(new Random().Next(100000, int.MaxValue));//生成随机字符串

32.权重筛选功能

var data=new List<WeightedItem<string>>()
{
     new WeightedItem<string>("A", 1),
     new WeightedItem<string>("B", 3),
     new WeightedItem<string>("C", 4),
     new WeightedItem<string>("D", 4),
};
var item=data.WeightedItem();//按权重选出1个元素
var list=data.WeightedItems(2);//按权重选出2个元素
var selector = new WeightedSelector<string>(new List<WeightedItem<string>>()
{
    new WeightedItem<string>("A", 1),
    new WeightedItem<string>("B", 3),
    new WeightedItem<string>("C", 4),
    new WeightedItem<string>("D", 4),
});
var item = selector.Select();//按权重选出1个元素
var list = selector.SelectMultiple(3);//按权重选出3个元素

33.EF Core支持AddOrUpdate方法

/// <summary>
/// 按Id添加或更新文章实体
/// </summary>
public override Post SavePost(Post t)
{
    DataContext.Set<Post>().AddOrUpdate(t => t.Id, t);
    return t;
}

34.敏感信息掩码

"13123456789".Mask(); // 131****5678
"admin@masuit.com".MaskEmail(); // a****n@masuit.com

35.集合扩展

var list = new List<string>()
{
    "1","3","3","3"
};
list.AddRangeIf(s => s.Length > 1, "1", "11"); // 将被添加元素中的长度大于1的元素添加到list
list.AddRangeIfNotContains("1", "11"); // 将被添加元素中不包含的元素添加到list
list.RemoveWhere(s => s.Length<1); // 将集合中长度小于1的元素移除
list.InsertAfter(0, "2"); // 在第一个元素之后插入
list.InsertAfter(s => s == "1", "2"); // 在元素"1"后插入
var dic = list.ToDictionarySafety(s => s); // 安全的转换成字典类型,当键重复时只添加一个键
var dic = list.ToConcurrentDictionary(s => s); // 转换成并发字典类型,当键重复时只添加一个键
var dic = list.ToDictionarySafety(s => s, s => s.GetHashCode()); // 安全的转换成字典类型,当键重复时只添加一个键
dic.AddOrUpdate("4", 4); // 添加或更新键值对
dic.AddOrUpdate(new Dictionary<string, int>()
{
    ["5"] = 5,["55"]=555
}); // 批量添加或更新键值对
dic.AddOrUpdate("5", 6, (s, i) => 66); // 如果是添加,则值为6,若更新则值为66
dic.AddOrUpdate("5", 6, 666); // 如果是添加,则值为6,若更新则值为666
dic.GetOrAdd("7",77); // 字典获取或添加元素
dic.GetOrAdd("7",()=>77); // 字典获取或添加元素
dic.AsConcurrentDictionary(); // 普通字典转换成并发字典集合
var table=list.ToDataTable(); // 转换成DataTable类型
table.AddIdentityColumn(); //给DataTable增加一个自增列
table.HasRows(); // 检查DataTable 是否有数据行
table.ToList<T>(); // datatable转List
var set = list.ToHashSet(s=>s.Name);// 转HashSet
var cts = new CancellationTokenSource(100); //取消口令
await list.ForeachAsync(async i=>{
    await Task.Delay(100);
    Console.WriteLine(i);
},cts.Token); // 异步foreach

await list.ForAsync(async (item,index)=>{
    await Task.Delay(100);
    Console.WriteLine(item+"_"+index);
},cts.Token); // 异步for,带索引编号
await list.SelectAsync(async i=>{
    await Task.Delay(100);
    return i*10;
}); // 异步Select
await list.SelectAsync(async (item,index)=>{
    await Task.Delay(100);
    return item*10;
}); // 异步Select,带索引编号
string s=list.Join(",");//将字符串集合连接成逗号分隔的单字符串
var max=list.MaxOrDefault(); // 取最大值,当集合为空的时候不会报错
var max=list.MaxOrDefault(selector); // 取最大值,当集合为空的时候不会报错
var max=list.MaxOrDefault(selector,default); // 取最大值,当集合为空的时候不会报错
var max=list.MinOrDefault(); // 取最小值,当集合为空的时候不会报错
var max=list.MinOrDefault(selector); // 取最小值,当集合为空的时候不会报错
var max=list.MinOrDefault(selector,default); // 取最小值,当集合为空的时候不会报错
var stdDev=list.Select(s=>s.ConvertTo<int>()).StandardDeviation(); // 求标准差

var pages=queryable.ToPagedList(1,10); // 分页查询
var pages=await queryable.ToPagedListAsync(1,10); // 分页查询

var nums=Enumerable.Range(1, 10).ExceptBy(Enumerable.Range(5, 10), i => i); // 按字段取差集
var nums=Enumerable.Range(1, 10).IntersectBy(Enumerable.Range(5, 10), i => i); // 按字段取交集
var nums=Enumerable.Range(1, 10).SequenceEqual(Enumerable.Range(5, 10), i => i); // 判断序列相等
var nums=Enumerable.Range(1, 10).OrderByRandom(); // 随机排序

// 多个集合取交集
var list=new List<List<MyClass>>(){
    new List<MyClass>(){
        new MyClass(){Name="aa",Age=11},
        new MyClass(){Name="bb",Age=12},
        new MyClass(){Name="cc",Age=13},
    },
    new List<MyClass>(){
        new MyClass(){Name="bb",Age=12},
        new MyClass(){Name="cc",Age=13},
        new MyClass(){Name="dd",Age=14},
    },
    new List<MyClass>(){
        new MyClass(){Name="cc",Age=13},
        new MyClass(){Name="dd",Age=14},
        new MyClass(){Name="ee",Age=15},
    },
};
var sect=list.IntersectAll(m=>m.Name); // new MyClass(){Name="cc",Age=13}

var list=new List<List<int>>(){
    new(){1,2,3},
    new(){2,3,4},
    new(){3,4,5}
};
var sect=list.IntersectAll();// [3]

// 集合元素改变其索引位置
list.ChangeIndex(item,3); // 将元素item的索引位置变为第3个
list.ChangeIndex(t=>t.Id=="123",2); // 将id为123的元素的索引位置变为第2个

36.Mime类型

var mimeMapper = new MimeMapper();
var ext = mimeMapper.GetExtensionFromMime("image/jpeg"); // .jpg
var mime = mimeMapper.GetMimeFromExtension(".jpg"); // image/jpeg

37.日期时间扩展

DateTime.Now.GetTotalSeconds(); // 获取该时间相对于1970-01-01 00:00:00的秒数
DateTime.Now.GetTotalMilliseconds(); // 获取该时间相对于1970-01-01 00:00:00的毫秒数
DateTime.Now.GetTotalMicroseconds(); // 获取该时间相对于1970-01-01 00:00:00的微秒数
DateTime.Now.GetTotalNanoseconds(); // 获取该时间相对于1970-01-01 00:00:00的纳秒数
var indate=DateTime.Parse("2020-8-3").In(DateTime.Parse("2020-8-2"),DateTime.Parse("2020-8-4"));//true
DateTime time="2021-1-1 8:00:00".ToDateTime(); //字符串转DateTime

//时间段计算工具
var range = new DateTimeRange(DateTime.Parse("2020-8-3"), DateTime.Parse("2020-8-5"));
range.Union(DateTime.Parse("2020-8-4"), DateTime.Parse("2020-8-6")); //连接两个时间段,结果:2020-8-3~2020-8-6
range.In(DateTime.Parse("2020-8-3"), DateTime.Parse("2020-8-6"));//判断是否在某个时间段内,true
var (intersected,range2) = range.Intersect(DateTime.Parse("2020-8-4"), DateTime.Parse("2020-8-6"));//两个时间段是否相交,(true,2020-8-3~2020-8-4)
range.Contains(DateTime.Parse("2020-8-3"), DateTime.Parse("2020-8-4"));//判断是否包含某个时间段,true
...

38.流转换

stream.SaveAsMemoryStream(); // 任意流转换成内存流
stream.ToArray(); // 任意流转换成二进制数组

39.数值转换

1.2345678901.Digits8(); // 将小数截断为8位
1.23.ConvertTo<int>(); // 小数转int
1.23.ConvertTo<T>(); // 小数转T基本类型
bool b=1.23.TryConvertTo<T>(out result); // 小数转T基本类型
var num=1.2345.ToDecimal(2); //转decimal并保留两位小数

40.INI配置文件操作

INIFile ini=new INIFile("filename.ini");
ini.IniWriteValue(section,key,value); // 写值
ini.IniReadValue(section,key); // 读值
ini.ClearAllSection(); // 清空所有配置节
ini.ClearSection(section); // 清空配置节

41.雷达图计算引擎

应用场景:计算两个多边形的相似度,用户画像之类的

var points=RadarChartEngine.ComputeIntersection(chart1,chart2); //获取两个多边形的相交区域
points.ComputeArea(); //计算多边形面积

42.树形结构实现

基本接口类:
ITreeChildren:带Children属性的接口
ITreeParent:带Parent属性的接口
ITree:继承ITreeParent和ITreeChildren,同时多了Name属性

相关扩展方法:

trees.Filter(func); // 从树形集合中过滤
trees.Flatten(); // 将数据平铺开
tree.AllChildren(); // 获取所有的子级
tree.AllParent(); // 获取所有的父级
tree.IsRoot(); // 是否是根节点
tree.IsLeaf(); // 是否是叶子节点
tree.Level(); // 所处深度/层级
tree.Path(); // 全路径

var tree=list.ToTree(c => c.Id, c => c.Pid);//继承自ITreeParent<T>, ITreeChildren<T>的集合转换成树形结构
var tree=list.ToTreeGeneral(c => c.Id, c => c.Pid);//一般的集合转换成树形结构

43.简单的Excel导出

需要额外依赖包:Masuit.Tools.Excel

var stream=list.Select(item=>new{
    姓名=item.Name,
    年龄=item.Age,
    item.Gender,
    Avatar=Image.FromStream(filestream) //图片列
}).ToDataTable().ToExcel("Sheet1"); //自定义列名导出
var stream=list.ToDataTable("Sheet1").ToExcel("文件密码");
一些约定规则:
  1. 图片列支持Stream、Bitmap、IEnumerable<Stream>、IEnumerable<Bitmap>、IDictionary<string,Stream>、IDictionary<string,MemoryStream>、IDictionary<string,Bitmap>类型;
  2. 其中,如果是IDictionary类型的图片列,字典的键为图片超链接的完整url;
  3. 默认字段名作为列名导出;
  4. 若list是一个具体的强类型,默认会先查找每个字段的Description标记,若有Description标记,则取Description标记作为列名显示
  5. ToExcel方法支持DataTable、List<DataTable>、Dictionary<string, DataTable>类型的直接调用

44.EFCore实体对比功能

获取指定实体的变更

var changes=dbContext.GetChanges<Post>();//获取变更字段信息
var added=dbContext.GetAdded<Post>();//获取添加的实体字段信息
var removed=dbContext.GetRemoved<Post>();//获取被移除的实体字段信息  
var allchanges=dbContext.GetAllChanges<Post>();//获取增删改的实体字段信息  

获取所有实体的变更

var changes=dbContext.GetChanges();//获取变更字段信息
var added=dbContext.GetAdded();//获取添加的实体字段信息
var removed=dbContext.GetRemoved();//获取被移除的实体字段信息  
var allchanges=dbContext.GetAllChanges();//获取增删改的实体字段信息  

对比信息包含属性信息、旧值、新值、实体信息、键信息、变更状态等

45.任何类型支持链式调用

a.Next(func1).Next(func2).Next(func3);
"123".Next(s=>s.ToInt32()).Next(x=>x*2).Next(x=>Math.Log(x));

46.Newtonsoft.Json的只允许字段反序列化行为的契约解释器

DeserializeOnlyContractResolver

该解释器针对类属性被DeserializeOnlyJsonPropertyAttribute标记的,在反序列化的时候生效,在序列化的时候忽略

public class ClassDto
    {
        [DeserializeOnlyJsonProperty]
        public string MyProperty { get; set; }

        public int Num { get; set; }
    }
    
    JsonConvert.SerializeObject(new MyClass(),new JsonSerializerSettings()
	{
		ContractResolver = new DeserializeOnlyContractResolver() // 配置使用DeserializeOnlyContractResolver解释器
	});

如果是WebAPI全局使用:

		//在Startup.ConfigureServices中
		services.AddMvc().AddNewtonsoftJson(options =>
             {
                 var resolver = new DeserializeOnlyContractResolver();
                 resolver.NamingStrategy = new CamelCaseNamingStrategy();
                 options.SerializerSettings.ContractResolver = resolver;
             });
FallbackJsonPropertyResolver

该解释器针对某个属性设置多个别名,反序列化时支持多个别名key进行绑定,弥补官方JsonProperty别名属性只能设置单一别名的不足

    public class ClassDto
    {
        [FallbackJsonProperty("MyProperty","a","b")]
        public string MyProperty { get; set; }

        public int Num { get; set; }
    }
    
    JsonConvert.SerializeObject(new MyClass(),new JsonSerializerSettings()
	{
		ContractResolver = new FallbackJsonPropertyResolver() // 配置使用FallbackJsonPropertyResolver解释器
	});
CompositeContractResolver

该解释器是DeserializeOnlyContractResolver和FallbackJsonPropertyResolver的融合版

47. ASP.NET Core Action同时支持queryString、表单和json请求类型的模型绑点器BodyOrDefaultModelBinder

用法:
引入包:Masuit.Tools.AspNetCore

PM> Install-Package Masuit.Tools.AspNetCore

Startup配置:

	services.AddMvc(options =>
        {
             options.ModelBinderProviders.InsertBodyOrDefaultBinding();
        })

在action的参数模型前打上标记:[FromBodyOrDefault]即可,当然也可以省略,示例代码如下:

        [HttpGet("query"),HttpPost("query")]
        public IActionResult Query([FromBodyOrDefault]QueryModel query)
        {
            return Ok(...);
        }
	
        [HttpGet("query"),HttpPost("query")]
        public IActionResult Query([FromBodyOrDefault]int id,[FromBodyOrDefault]string name)
        {
            return Ok(...);
        }

48. 字符串SimHash相似度算法

var dis="12345678".HammingDistance("1234567");
var dis=new SimHash("12345678").HammingDistance(new SimHash("1234567"));

49. 真实文件类型探测

// 多种方式,任君调用
var detector=new FileInfo(filepath).DetectFiletype();
//var detector=File.OpenRead(filepath).DetectFiletype();
//var detector=FileSignatureDetector.DetectFiletype(filepath);
detector.Precondition;//基础文件类型
detector.Extension;//真实扩展名
detector.MimeType;//MimeType
detector.FormatCategories;//格式类别
默认支持的文件类型
扩展名 说明
3GP 3GPP, 3GPP 2
7Z 7-Zip
APK ZIP based Android Package
AVI Audio-Video Interleave
SH Shell Script
BPLIST Binary Property List
BMP, DIB Bitmap
BZ2 Bunzip2 Compressed
CAB Microsoft Cabinet
CLASS Java Bytecode
CONFIG .NET Configuration File
CRT, CERT Certificate
CUR Cursor
DB Windows Thumbs.db Thumbnail Database
DDS DirectDraw Surface
DLL Windows Dynamic Linkage Library
DMG Apple Disk Mount Image
DMP Windows Memory Dump File
DOC Microsoft Office Word 97-2003 Document
DOCX Microsoft Office Word OpenXML Document
EPUB e-Pub Document
EXE Windows Executive
FLAC Loseless Audio
FLV Flash Video
GIF Graphics Interchage Format
GZ GZ Compressed
HDP HD Photo(JPEG XR) Image
HWP Legacy HWP, HWPML, CFBF HWP
ICO Icon
INI Initialization File
ISO ISO-9660 Disc Image
LNK Windows Shortcut Link
JP2 JPEG 2000 Image
JPG, JPEG Joint Photographic Experts Group Image
LZH LZH Compressed
M4A MP4 Container Contained Audio Only
M4V MP4 Container Contained Video
MID Midi Sound
MKA Matroska Container Contained Audio Only
MKV Matroska Container Contained Video
MOV QuickTime Movie Video
MP4 MP4 Container Contained Contents
MSI Microsoft Installer
OGG OGG Video or Audio
ODF OpenDocument Formula
ODG OpenDocument Graphics
ODP OpenDocument Presentation
ODS OpenDocument Spreadsheet
ODT OpenDocument Text
PAK PAK Archive or Quake Archive
PDB Microsoft Program Database
PDF Portable Document Format
PFX Microsoft Personal Information Exchange Certificate
PNG Portable Network Graphics Image
PPT Microsoft Office PowerPoint 97-2003 Document
PPTX Microsoft Office PowerPoint OpenXML Document
PPSX Microsoft Office PowerPoint OpenXML Document for Slideshow only
PSD Photoshop Document
RAR WinRAR Compressed
REG Windows Registry
RPM RedHat Package Manager Package
RTF Rich Text Format Document
SLN Microsoft Visual Studio Solution
SRT SubRip Subtitle
SWF Shockwave Flash
SQLITE, DB SQLite Database
TAR pre-ISO Type and UStar Type TAR Package
TIFF Tagged Image File Format Image
TXT Plain Text
WAV Wave Audio
WASM Binary WebAssembly
WEBM WebM Video
WEBP WebP Image
XAR XAR Package
XLS Microsoft Office Excel 97-2003 Document
XLSX Microsoft Office Excep OpenXML Document
XML Extensible Markup Language Document
Z Z Compressed
ZIP ZIP Package

Asp.Net MVC和Asp.Net Core的支持断点续传和多线程下载的ResumeFileResult

在ASP.NET Core中通过MVC/WebAPI应用程序传输文件数据时使用断点续传以及多线程下载支持。

它提供了ETag标头以及Last-Modified标头。 它还支持以下前置条件标头:If-MatchIf-None-MatchIf-Modified-SinceIf-Unmodified-SinceIf-Range

支持 ASP.NET Core 2.0+

从.NET Core2.0开始,ASP.NET Core内部支持断点续传。 因此只是对FileResult做了一些扩展。 只留下了“Content-Disposition” Inline的一部分。 所有代码都依赖于基础.NET类。

如何使用

.NET Framework

在你的控制器中,你可以像在FileResult一样的方式使用它。

using Masuit.Tools.Mvc;
using Masuit.Tools.Mvc.ResumeFileResult;
private readonly MimeMapper mimeMapper=new MimeMapper(); // 推荐使用依赖注入

public ActionResult ResumeFileResult()
{
    var path = Server.MapPath("~/Content/test.mp4");
    return new ResumeFileResult(path, mimeMapper.GetMimeFromPath(path), Request);
}

public ActionResult ResumeFile()
{
    return this.ResumeFile("~/Content/test.mp4", mimeMapper.GetMimeFromPath(path), "test.mp4");
}

public ActionResult ResumePhysicalFile()
{
    return this.ResumePhysicalFile(@"D:/test.mp4", mimeMapper.GetMimeFromPath(@"D:/test.mp4"), "test.mp4");
}

Asp.Net Core

要使用ResumeFileResults,必须在Startup.csConfigureServices方法调用中配置服务:

using Masuit.Tools.AspNetCore.ResumeFileResults.Extensions;
public void ConfigureServices(IServiceCollection services)
{
    services.AddResumeFileResult();
}

然后在你的控制器中,你可以像在FileResult一样的方式使用它。 <details> <summary>点击查看代码</summary>

using Masuit.Tools.AspNetCore.ResumeFileResults.Extensions;
private const string EntityTag = "\"TestFile\"";

private readonly IHostingEnvironment _hostingEnvironment;

private readonly DateTimeOffset _lastModified = new DateTimeOffset(2016, 1, 1, 0, 0, 0, TimeSpan.Zero);

/// <summary>
/// 
/// </summary>
/// <param name="hostingEnvironment"></param>
public TestController(IHostingEnvironment hostingEnvironment)
{
    _hostingEnvironment = hostingEnvironment;
}

[HttpGet("content/{fileName}/{etag}")]
public IActionResult FileContent(bool fileName, bool etag)
{
    string webRoot = _hostingEnvironment.WebRootPath;
    var content = System.IO.File.ReadAllBytes(Path.Combine(webRoot, "TestFile.txt"));
    ResumeFileContentResult result = this.ResumeFile(content, "text/plain", fileName ? "TestFile.txt" : null, etag ? EntityTag : null);
    result.LastModified = _lastModified;
    return result;
}

[HttpGet("content/{fileName}")]
public IActionResult FileContent(bool fileName)
{
    string webRoot = _hostingEnvironment.WebRootPath;
    var content = System.IO.File.ReadAllBytes(Path.Combine(webRoot, "TestFile.txt"));
    var result = new ResumeFileContentResult(content, "text/plain")
    {
        FileInlineName = "TestFile.txt",
        LastModified = _lastModified
    };
    return result;
}

[HttpHead("file")]
public IActionResult FileHead()
{
    ResumeVirtualFileResult result = this.ResumeFile("TestFile.txt", "text/plain", "TestFile.txt", EntityTag);
    result.LastModified = _lastModified;
    return result;
}

[HttpPut("file")]
public IActionResult FilePut()
{
    ResumeVirtualFileResult result = this.ResumeFile("TestFile.txt", "text/plain", "TestFile.txt", EntityTag);
    result.LastModified = _lastModified;
    return result;
}

[HttpGet("stream/{fileName}/{etag}")]
public IActionResult FileStream(bool fileName, bool etag)
{
    string webRoot = _hostingEnvironment.WebRootPath;
    FileStream stream = System.IO.File.OpenRead(Path.Combine(webRoot, "TestFile.txt"));

    ResumeFileStreamResult result = this.ResumeFile(stream, "text/plain", fileName ? "TestFile.txt" : null, etag ? EntityTag : null);
    result.LastModified = _lastModified;
    return result;
}

[HttpGet("stream/{fileName}")]
public IActionResult FileStream(bool fileName)
{
    string webRoot = _hostingEnvironment.WebRootPath;
    FileStream stream = System.IO.File.OpenRead(Path.Combine(webRoot, "TestFile.txt"));

    var result = new ResumeFileStreamResult(stream, "text/plain")
    {
        FileInlineName = "TestFile.txt",
        LastModified = _lastModified
    };

    return result;
}

[HttpGet("physical/{fileName}/{etag}")]
public IActionResult PhysicalFile(bool fileName, bool etag)
{
    string webRoot = _hostingEnvironment.WebRootPath;

    ResumePhysicalFileResult result = this.ResumePhysicalFile(Path.Combine(webRoot, "TestFile.txt"), "text/plain", fileName ? "TestFile.txt" : null, etag ? EntityTag : null);
    result.LastModified = _lastModified;
    return result;
}

[HttpGet("physical/{fileName}")]
public IActionResult PhysicalFile(bool fileName)
{
    string webRoot = _hostingEnvironment.WebRootPath;

    var result = new ResumePhysicalFileResult(Path.Combine(webRoot, "TestFile.txt"), "text/plain")
    {
        FileInlineName = "TestFile.txt",
        LastModified = _lastModified
    };

    return result;
}

[HttpGet("virtual/{fileName}/{etag}")]
public IActionResult VirtualFile(bool fileName, bool etag)
{
    ResumeVirtualFileResult result = this.ResumeFile("TestFile.txt", "text/plain", fileName ? "TestFile.txt" : null, etag ? EntityTag : null);
    result.LastModified = _lastModified;
    return result;
}

以上示例将为您的数据提供“Content-Disposition:attachment”。 当没有提供fileName时,数据将作为“Content-Disposition:inline”提供。 另外,它可以提供ETagLastModified标头。

[HttpGet("virtual/{fileName}")]
public IActionResult VirtualFile(bool fileName)
{
    var result = new ResumeVirtualFileResult("TestFile.txt", "text/plain")
    {
        FileInlineName = "TestFile.txt",
        LastModified = _lastModified
    };
    return result;
}

</details>

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Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 is compatible.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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