# C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.CompanyId

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnectionStringBuilder_CompanyId_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.CompanyId*">CompanyId Property
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnectionStringBuilder_CompanyId_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.CompanyId*"></a>
<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnectionStringBuilder_CompanyId" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.CompanyId">CompanyId</h4>
<div class="markdown level1 summary"><p>The unique identifier of a given company in QuickBooks Online.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">[IsRequired(true)]
public string CompanyId { get; set; }</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">&lt;IsRequired(True)&gt;
Public Property CompanyId As String</code></pre>
</div>
</div>