# C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.BeginDbTransaction

## Content

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



<h1 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection_BeginDbTransaction_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.BeginDbTransaction*">BeginDbTransaction Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection_BeginDbTransaction_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.BeginDbTransaction*"></a>
<h4 id="C1_AdoNet_QuickBooksOnline_C1QuickBooksOnlineConnection_BeginDbTransaction_System_Data_IsolationLevel_" data-uid="C1.AdoNet.QuickBooksOnline.C1QuickBooksOnlineConnection.BeginDbTransaction(System.Data.IsolationLevel)">BeginDbTransaction(IsolationLevel)</h4>
<div class="markdown level1 summary"><p>Begins a transaction on the connection.</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">protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Protected Overrides Function BeginDbTransaction(isolationLevel As IsolationLevel) As DbTransaction</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="https://learn.microsoft.com/dotnet/api/system.data.isolationlevel">IsolationLevel</a></td>
      <td><span class="parametername">isolationLevel</span></td>
      <td><p>The isolation level of the transaction.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.data.common.dbtransaction">DbTransaction</a></td>
      <td><p>The transaction.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.data.common.dbconnection.begindbtransaction">DbConnection.BeginDbTransaction(IsolationLevel)</a></div>
</div>