# GrapeCity.Viewer.Common.NullDelegateCommand.CanExecute

## Content

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<h1 id="GrapeCity_Viewer_Common_NullDelegateCommand_CanExecute_" data-uid="GrapeCity.Viewer.Common.NullDelegateCommand.CanExecute*">CanExecute Method
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<a id="GrapeCity_Viewer_Common_NullDelegateCommand_CanExecute_" data-uid="GrapeCity.Viewer.Common.NullDelegateCommand.CanExecute*"></a>
<h4 id="GrapeCity_Viewer_Common_NullDelegateCommand_CanExecute_System_Object_" data-uid="GrapeCity.Viewer.Common.NullDelegateCommand.CanExecute(System.Object)">CanExecute(object)</h4>
<div class="markdown level1 summary"><p>Defines the method that determines whether the command can execute in its current state.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public bool CanExecute(object parameter)</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">parameter</span></td>
      <td><p>Data used by the command. If the command does not require data to be passed, this object can be set to null.</p>
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  </tbody>
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<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.boolean">bool</a></td>
      <td><p><code>true</code> if this instance can execute the specified parameter; otherwise, <code>false</code>.</p>
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<h5 class="implements">Implements</h5>
    <div><a class="xref" href="GrapeCity.Viewer.Common.ICommand.CanExecute.html#GrapeCity_Viewer_Common_ICommand_CanExecute_System_Object_">ICommand.CanExecute(object)</a></div>
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