ID名称年龄
1阿米拉31
2贾亚28
3萨汉24
4 Ishara 21
这是我的sample1.text文件，具有3列。我想读取文件，只写年龄大于25岁的人。
请帮忙，以最好的方式做到这一点。 谢谢
答案 0 :(得分：0)
使用string.Split方法将元素添加到数组或列表中。
对于选项卡，它看起来像<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Welcome!</title>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">
<link rel="stylesheet" href="/css/bootstrap.min.css">
<link rel="stylesheet" href="/css/app.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fullcalendar/core@4.1.0/main.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fullcalendar/daygrid@4.1.0/main.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fullcalendar/timegrid@4.1.0/main.min.css">
<script src="/js/jquery.min.js"></script>
</head>
<body>
<nav class="navbar navbar-expand-lg bg-">
<a class="navbar-brand" href="/">Share</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarColor01">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="/account/dashboard"><i class="fas fa-chart-line fa-2x"></i> Tableau de bord</a>
</li>
<li class="nav-item ">
<a class="nav-link" href="/dashboard/showMines"><i class="fas fa-hands-helping fa-2x"></i> offres d'atelier <span class="badge-pill badge-danger dash">3</span> </a>
</li>
<li class="nav-item ">
<a class="nav-link" href="/dashbord/books"><i class="fas fa-graduation-cap fa-2x "></i> cours pris<span class="badge-pill badge-danger dash">2</span></a>
</li>
<li class="nav-item ">
<a class="nav-link" href="/dashboard/courses"><i class="fas fa-chalkboard-teacher fa-2x"></i> cours donnés</a>
</li>
<li class="nav-item ">
<a class="nav-link" href="/dashboard/calendar"><i class="fas fa-calendar-alt fa-2x"></i> mon agenda</a>
</li>
</ul>
<ul class="navbar-nav ml-auto align-items-center">
<li class="nev-item">
<a href="/" class="nav-link" ><i class="fas fa-home fa-2x"></i></i> Retour à l'accueil</a>
</li>
<li class="nav-item dropdown">
<a href="#" class="nav-link dropdown-toggle" id="accountDropdownlink" data-toggle="dropdown">
<img src="https://randomuser.me/api/portraits/women/56.jpg" alt="Avatar de Cécile" class="avatar avatar-small" class="mr-2"><span class="ml-2 mt-5">Cécile</span>
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="accountDropdownlink">
<a class="dropdown-item" href="/activity/new">Créer une activité</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/account">Mon compte</a>
<a class="dropdown-item" href="/account/edit">Modifier mon profil</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/logout">Déconnexion</a>
</div>
</li>
</ul>
</div>
</nav></div>
<div class="container mt-5">
<div id="calendar-holder"></div>
</div>
<footer class="bg-warning text-center py-3 mt-3">
</footer>
<script src="/js/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<script>
document.addEventListener('DOMContentLoaded', () => {
var calendarEl = document.getElementById('calendar-holder');
var calendar = new FullCalendar.Calendar(calendarEl, {
//locale: 'fr',
defaultView: 'dayGridMonth',
editable: true,
eventSources: [
{
url: "/fc-load-events",
method: "POST",
extraParams: {
// filters: JSON.stringify({})
},
failure: () => {
alert("There was an error while fetching FullCalendar!");
},
},
],
header: {
locale:'fr',
left: 'prev,next today',
center: 'title',
right: 'dayGridMonth,timeGridWeek,timeGridDay',
},
plugins: [ 'interaction', 'dayGrid', 'timeGrid' ], // https://fullcalendar.io/docs/plugin-index
timeZone: 'Europe/Paris',
});
calendar.setOption('locale', 'fr');
calendar.render();
});
</script>
<script src="https://cdn.jsdelivr.net/npm/@fullcalendar/core@4.1.0/main.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@fullcalendar/interaction@4.1.0/main.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@fullcalendar/daygrid@4.1.0/main.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@fullcalendar/timegrid@4.1.0/main.min.js"></script>
，对于逗号，yourString.Split("\t")
有关此处的拆分的更多信息：https://docs.microsoft.com/en-us/dotnet/api/system.string.split?view=netframework-4.8
答案 1 :(得分：0)
我该如何解决
File.ReadAllLines(@"FilePath")从示例文件中读取行并将其存储在列表中。line.split('\t')分割行，检查该行的年龄，并使用output.writeline("Stuff to write")将该行写成符合条件的行查看进度后
将using(var writer=new StreamWriter(WritePath))移到string s ="";上方，因为您只写原始文件的最后一行。
基本上，您正在读取的每一行都覆盖了文件，而不是附加文件。
在while循环中，您可以检查年龄，然后以所需的格式编写所需的行。