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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Base Class Library</span></h1>
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<p>La <b>Base Class Library</b> (BCL) de <a href="Microsoft" title="Microsoft">Microsoft</a> est une <a href="Biblioth%C3%A8que_standard" title="Bibliothèque standard">bibliothèque standard</a> utilisée par tous les langages basés sur <a href="Framework_.NET" class="mw-redirect" title="Framework .NET">framework .NET</a>.
</p><p>Pour faciliter le travail du <a href="D%C3%A9veloppeur" title="Développeur">développeur</a>, .NET utilise la BCL pour encapsuler un grand nombre de fonctions communes, telles que la lecture et l'écriture, le rendu graphique, l'interaction avec une <a href="Base_de_donn%C3%A9es" title="Base de données">base de données</a>, la manipulation de documents <a href="Extensible_Markup_Language" title="Extensible Markup Language">Extensible Markup Language</a>. Son but est beaucoup plus large que celui d'autres langages comme <a href="C%2B%2B" title="C++">C++</a>, et il serait plus comparable avec la bibliothèque standard de <a href="Java_(langage)" title="Java (langage)">Java</a> (<a href="Java_Class_Library" title="Java Class Library">Java Class Library</a>).
</p><p>Il ne faut pas faire de confusion entre la BCL et la FCL (Framework Class Library), qui est un sur-ensemble incluant l'<a href="Espace_de_noms_(programmation)#Espaces_de_noms_explicites" title="Espace de noms (programmation)">espace de noms</a> de Microsoft.
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<div class="mw-heading mw-heading2"><h2 id="Espace_de_noms">Espace de noms</h2></div>

<ul><li>System.CodeDom<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li>
<li>System.Collections</li>
<li>System.ComponentModel<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li>
<li>System.Configuration</li>
<li>System.Data</li>
<li>System.Deployment</li>
<li>System.Diagnostics</li>
<li>System.DirectoryServices</li></ul>
<dl><dd>Pour l'accès à <a href="Active_Directory" title="Active Directory">Active Directory</a></dd></dl>
<ul><li>System.Drawing</li>
<li>System.EnterpriseServices<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li>
<li>System.Globalization<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li>
<li>System.IO</li>
<li>System.Management<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li>
<li>System.Media</li></ul>
<dl><dd>Pour <a href="Waveform_Audio_File_Format" title="Waveform Audio File Format">Waveform Audio File Format</a></dd></dl>
<ul><li>System.Messaging<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li></ul>
<dl><dd><a href=".NET_Remoting" title=".NET Remoting">.NET Remoting</a> est un autre nom pour les fonctionnalités fournies. Voir <a href="Windows_Communication_Foundation" title="Windows Communication Foundation">Windows Communication Foundation</a>.</dd></dl>
<ul><li>System.Net</li>
<li>System.Linq.Expressions</li></ul>
<dl><dd>Voir <a href="Language_Integrated_Query" title="Language Integrated Query">Language Integrated Query</a></dd></dl>
<ul><li>System.Reflection<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li>
<li>System.Resources</li>
<li>System.Runtime</li>
<li>System.Security<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li></ul>
<dl><dd>Cet espace de noms fournit entre autres la <a href="Cryptographie" title="Cryptographie">cryptographie</a></dd></dl>
<ul><li>System.ServiceProcess</li>
<li>System.Text</li></ul>
<dl><dd>Supporte des encodages variés, des <a href="Expression_r%C3%A9guli%C3%A8re" title="Expression régulière">expressions régulières</a> et des mécanismes pour manipuler des <a href="Cha%C3%AEnes_de_caract%C3%A8res" class="mw-redirect" title="Chaînes de caractères">chaînes de caractères</a> (voir StringBuffer and StringBuilder&nbsp;<a href="https://en.wikipedia.org/wiki/StringBuffer_and_StringBuilder" class="extiw external" title="en:StringBuffer and StringBuilder"><span class="indicateur-langue" title="Article en anglais&nbsp;: «&nbsp;StringBuffer and StringBuilder&nbsp;»">(en)</span></a>)</dd></dl>
<ul><li>System.<a href="Processus_l%C3%A9ger" class="mw-redirect" title="Processus léger">Threading</a><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>.</li>
<li>System.Timers<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li>
<li>System.<a href="Transaction_informatique" title="Transaction informatique">Transactions</a></li>
<li>System.Web&nbsp;:</li></ul>
<dl><dd>Tout ou partie de cette architecture correspond à <a href="ASP.NET" title="ASP.NET">ASP.NET</a></dd></dl>
<ul><li>System.Windows.Forms</li></ul>
<dl><dd>Cet espace de nom contient l'architecture Windows Forms, voir <a href="Windows_Forms" title="Windows Forms">Windows Forms</a></dd></dl>
<ul><li>System.<a href="XML" class="mw-redirect" title="XML">Xml</a><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Voir_aussi">Voir aussi</h2></div>
<ul><li><a href="ADO.NET" class="mw-redirect" title="ADO.NET">ADO.NET</a></li>
<li><a href="Windows_Presentation_Foundation" title="Windows Presentation Foundation">Windows Presentation Foundation</a></li>
<li><a href="Windows_Communication_Foundation" title="Windows Communication Foundation">Windows Communication Foundation</a></li>
<li><a href="Windows_Workflow_Foundation" title="Windows Workflow Foundation">Windows Workflow Foundation</a></li>
<li><a href="Windows_CardSpace" title="Windows CardSpace">Windows CardSpace</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Références"><span id="R.C3.A9f.C3.A9rences"></span>Références</h2></div>
<div class="references-small decimal" style=""><div class="mw-references-wrap mw-references-columns"><ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.codedom.aspx">MSDN Documentation - System.CodeDom Namespace</a></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.componentmodel.aspx">MSDN Documentation - System.ComponentModel Namespace</a></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.enterpriseservices.aspx">MSDN Documentation - System.EnterpriseServices Namespace</a></span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.globalization.aspx">MSDN Documentation - System.Globalization Namespace</a></span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.management.aspx">MSDN Documentation - System.Management Namespace</a></span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.messaging.aspx">MSDN Documentation - System.Messaging Namespace</a></span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.reflection.aspx">MSDN Documentation - System.Reflection Namespace</a></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.security.aspx">MSDN Documentation - System.Security Namespace</a></span>
</li>
<li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.threading.aspx">MSDN Documentation - System.Threading Namespace</a></span>
</li>
<li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.timers.aspx">MSDN Documentation - System.Timers Namespace</a></span>
</li>
<li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a> </span><span class="reference-text"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/system.xml.aspx">MSDN Documentation - System.Xml Namespace</a></span>
</li>
</ol></div>
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<div class="mw-heading mw-heading2"><h2 id="Références_externes"><span id="R.C3.A9f.C3.A9rences_externes"></span>Références externes</h2></div>
<ul><li><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://msdn.microsoft.com/netframework/">.NET Framework Developer Center</a>. Microsoft Developer Network (MSDN).</li>
<li><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/netframework/aa569603.aspx">Base Class Libraries Community</a>. More information and FAQs about the BCL.</li>
<li><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://download.microsoft.com/download/4/a/3/4a3c7c55-84ab-4588-84a4-f96424a7d82d/NET35_Namespaces_Poster_LORES.pdf">.NET Framework 3.5 namespaces</a></li>
<li><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/aa388745.aspx">MSDN BCL Documentation</a>.</li>
<li><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://blogs.msdn.com/bclteam/">BCLTeam's WebLog</a>.</li></ul>
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