# C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.-ctor

## Content

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



<h1 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor*">C1QuickBooksOnlineConnection Constructor
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor*"></a>
<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor">C1QuickBooksOnlineConnection()</h4>
<div class="markdown level1 summary"><p>Creates a new <a class="xref" href="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.html">C1QuickBooksOnlineConnection</a> instance.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public C1QuickBooksOnlineConnection()</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New()</code></pre>
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<a id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor*"></a>
<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_System_String_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor(System.String)">C1QuickBooksOnlineConnection(string)</h4>
<div class="markdown level1 summary"><p>Initialize a new <a class="xref" href="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.html">C1QuickBooksOnlineConnection</a> instance using the specified connection string.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public C1QuickBooksOnlineConnection(string connectionString)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New(connectionString As String)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">connectionString</span></td>
      <td></td>
    </tr>
  </tbody>
</table>


<a id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor*"></a>
<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection__ctor_C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnectionStringBuilder_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.#ctor(C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder)">C1QuickBooksOnlineConnection(C1QuickBooksOnlineConnectionStringBuilder)</h4>
<div class="markdown level1 summary"><p>Initialize a new <a class="xref" href="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.html">C1QuickBooksOnlineConnection</a> instance using the specified connection string
expressed in a <a class="xref" href="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.html">C1QuickBooksOnlineConnectionStringBuilder</a>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public C1QuickBooksOnlineConnection(C1QuickBooksOnlineConnectionStringBuilder connectionStringBuilder)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New(connectionStringBuilder As C1QuickBooksOnlineConnectionStringBuilder)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnectionStringBuilder.html">C1QuickBooksOnlineConnectionStringBuilder</a></td>
      <td><span class="parametername">connectionStringBuilder</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
</div>