# C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.Open

## Content

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<h1 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection_Open_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.Open*">Open Method
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<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection_Open" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.Open">Open()</h4>
<div class="markdown level1 summary"><p>Opens a database connection with the settings specified by the connection string.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public override void Open()</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Overrides Sub Open()</code></pre>
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<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.data.common.dbconnection.open">DbConnection.Open()</a></div>
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