# C1.WPF.GanttView.CancelTaskEventHandler

## Content

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  <h1 id="C1_WPF_GanttView_CancelTaskEventHandler" data-uid="C1.WPF.GanttView.CancelTaskEventHandler" class="text-break">CancelTaskEventHandler Delegate
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  <div class="markdown level0 summary"><p>Represents the method that will handle C1GanttView's BeforeAddTask, BeforeEditTask and AfterEditTask events.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.WPF.GanttView.html">C1.WPF.GanttView</a></h6>
  <h6><strong>Assembly</strong>: C1.WPF.GanttView.4.6.2.dll</h6>
  <h5 id="C1_WPF_GanttView_CancelTaskEventHandler_syntax">Syntax</h5>
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    <pre><code class="lang-csharp hljs">public delegate void CancelTaskEventHandler(object sender, CancelTaskEventArgs e)</code></pre>
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  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Delegate Sub CancelTaskEventHandler(sender As Object, e As CancelTaskEventArgs)</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>
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    </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>Object that fired the event.</p>
</td>
      </tr>
      <tr>
        <td><a class="xref" href="C1.WPF.GanttView.CancelTaskEventArgs.html">CancelTaskEventArgs</a></td>
        <td><span class="parametername">e</span></td>
        <td><p>Object that contains the event data.</p>
</td>
      </tr>
    </tbody>
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  <h3 id="constructors">Constructors
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    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_WPF_GanttView_CancelTaskEventHandler__ctor_System_Object_System_IntPtr_" data-uid="C1.WPF.GanttView.CancelTaskEventHandler.#ctor(System.Object,System.IntPtr)">
          <a class="xref" href="C1.WPF.GanttView.CancelTaskEventHandler.-ctor.html#C1_WPF_GanttView_CancelTaskEventHandler__ctor_System_Object_System_IntPtr_">CancelTaskEventHandler(object, IntPtr)</a>
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        <td class="markdown level1 summary"></td>
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  <h3 id="methods">Methods
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    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
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    </thead>
    <tbody>
      <tr>
        <td id="C1_WPF_GanttView_CancelTaskEventHandler_BeginInvoke_System_Object_C1_WPF_GanttView_CancelTaskEventArgs_System_AsyncCallback_System_Object_" data-uid="C1.WPF.GanttView.CancelTaskEventHandler.BeginInvoke(System.Object,C1.WPF.GanttView.CancelTaskEventArgs,System.AsyncCallback,System.Object)">
          <a class="xref" href="C1.WPF.GanttView.CancelTaskEventHandler.BeginInvoke.html#C1_WPF_GanttView_CancelTaskEventHandler_BeginInvoke_System_Object_C1_WPF_GanttView_CancelTaskEventArgs_System_AsyncCallback_System_Object_">BeginInvoke(object, CancelTaskEventArgs, AsyncCallback, object)</a>
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        <td class="markdown level1 summary"></td>
      </tr>
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        <td id="C1_WPF_GanttView_CancelTaskEventHandler_EndInvoke_System_IAsyncResult_" data-uid="C1.WPF.GanttView.CancelTaskEventHandler.EndInvoke(System.IAsyncResult)">
          <a class="xref" href="C1.WPF.GanttView.CancelTaskEventHandler.EndInvoke.html#C1_WPF_GanttView_CancelTaskEventHandler_EndInvoke_System_IAsyncResult_">EndInvoke(IAsyncResult)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
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        <td id="C1_WPF_GanttView_CancelTaskEventHandler_Invoke_System_Object_C1_WPF_GanttView_CancelTaskEventArgs_" data-uid="C1.WPF.GanttView.CancelTaskEventHandler.Invoke(System.Object,C1.WPF.GanttView.CancelTaskEventArgs)">
          <a class="xref" href="C1.WPF.GanttView.CancelTaskEventHandler.Invoke.html#C1_WPF_GanttView_CancelTaskEventHandler_Invoke_System_Object_C1_WPF_GanttView_CancelTaskEventArgs_">Invoke(object, CancelTaskEventArgs)</a>
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        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>

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