# C1.Win.C1DynamicHelp.HelpTopicEventHandler

## Content

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  <h1 id="C1_Win_C1DynamicHelp_HelpTopicEventHandler" data-uid="C1.Win.C1DynamicHelp.HelpTopicEventHandler" class="text-break">HelpTopicEventHandler Delegate
</h1>
  <div class="markdown level0 summary"><p>Represents a method that will handle the <a class="xref" href="C1.Win.C1DynamicHelp.C1DynamicHelp.CurrentTopicChanging.html">CurrentTopicChanging</a>
event of a <a class="xref" href="C1.Win.C1DynamicHelp.C1DynamicHelp.html">C1DynamicHelp</a>.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.C1DynamicHelp.html">C1.Win.C1DynamicHelp</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.C1DynamicHelp.4.8.dll</h6>
  <h5 id="C1_Win_C1DynamicHelp_HelpTopicEventHandler_syntax">Syntax</h5>
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    <pre><code class="lang-csharp hljs">public delegate void HelpTopicEventHandler(object sender, TopicEventArgs e)</code></pre>
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  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Delegate Sub HelpTopicEventHandler(sender As Object, e As TopicEventArgs)</code></pre>
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  <h5 class="parameters">Parameters</h5>
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    <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.object">object</a></td>
        <td><span class="parametername">sender</span></td>
        <td><p>The source of the event.</p>
</td>
      </tr>
      <tr>
        <td><a class="xref" href="C1.Win.C1DynamicHelp.TopicEventArgs.html">TopicEventArgs</a></td>
        <td><span class="parametername">e</span></td>
        <td><p>A <a class="xref" href="C1.Win.C1DynamicHelp.TopicEventArgs.html">TopicEventArgs</a> that contains the event data.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="constructors">Constructors
</h3>
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    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1DynamicHelp_HelpTopicEventHandler__ctor_System_Object_System_IntPtr_" data-uid="C1.Win.C1DynamicHelp.HelpTopicEventHandler.#ctor(System.Object,System.IntPtr)">
          <a class="xref" href="C1.Win.C1DynamicHelp.HelpTopicEventHandler.-ctor.html#C1_Win_C1DynamicHelp_HelpTopicEventHandler__ctor_System_Object_System_IntPtr_">HelpTopicEventHandler(object, IntPtr)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
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  <h3 id="methods">Methods
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  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1DynamicHelp_HelpTopicEventHandler_BeginInvoke_System_Object_C1_Win_C1DynamicHelp_TopicEventArgs_System_AsyncCallback_System_Object_" data-uid="C1.Win.C1DynamicHelp.HelpTopicEventHandler.BeginInvoke(System.Object,C1.Win.C1DynamicHelp.TopicEventArgs,System.AsyncCallback,System.Object)">
          <a class="xref" href="C1.Win.C1DynamicHelp.HelpTopicEventHandler.BeginInvoke.html#C1_Win_C1DynamicHelp_HelpTopicEventHandler_BeginInvoke_System_Object_C1_Win_C1DynamicHelp_TopicEventArgs_System_AsyncCallback_System_Object_">BeginInvoke(object, TopicEventArgs, AsyncCallback, object)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_HelpTopicEventHandler_EndInvoke_System_IAsyncResult_" data-uid="C1.Win.C1DynamicHelp.HelpTopicEventHandler.EndInvoke(System.IAsyncResult)">
          <a class="xref" href="C1.Win.C1DynamicHelp.HelpTopicEventHandler.EndInvoke.html#C1_Win_C1DynamicHelp_HelpTopicEventHandler_EndInvoke_System_IAsyncResult_">EndInvoke(IAsyncResult)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_HelpTopicEventHandler_Invoke_System_Object_C1_Win_C1DynamicHelp_TopicEventArgs_" data-uid="C1.Win.C1DynamicHelp.HelpTopicEventHandler.Invoke(System.Object,C1.Win.C1DynamicHelp.TopicEventArgs)">
          <a class="xref" href="C1.Win.C1DynamicHelp.HelpTopicEventHandler.Invoke.html#C1_Win_C1DynamicHelp_HelpTopicEventHandler_Invoke_System_Object_C1_Win_C1DynamicHelp_TopicEventArgs_">Invoke(object, TopicEventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>

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