# C1.WPF.RichTextBox.MessageBoxShowingEventArgs.-ctor

## Content

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<h1 id="C1_WPF_RichTextBox_MessageBoxShowingEventArgs__ctor_" data-uid="C1.WPF.RichTextBox.MessageBoxShowingEventArgs.#ctor*">MessageBoxShowingEventArgs Constructor
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_RichTextBox_MessageBoxShowingEventArgs__ctor_" data-uid="C1.WPF.RichTextBox.MessageBoxShowingEventArgs.#ctor*"></a>
<h4 id="C1_WPF_RichTextBox_MessageBoxShowingEventArgs__ctor_System_String_System_Windows_MessageBoxImage_System_Windows_UIElement_" data-uid="C1.WPF.RichTextBox.MessageBoxShowingEventArgs.#ctor(System.String,System.Windows.MessageBoxImage,System.Windows.UIElement)">MessageBoxShowingEventArgs(string, MessageBoxImage, UIElement)</h4>
<div class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="C1.WPF.RichTextBox.MessageBoxShowingEventArgs.html">MessageBoxShowingEventArgs</a>.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public MessageBoxShowingEventArgs(string message, MessageBoxImage icon, UIElement sender)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Sub New(message As String, icon As MessageBoxImage, sender As UIElement)</code></pre>
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<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.string">string</a></td>
      <td><span class="parametername">message</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.messageboximage">MessageBoxImage</a></td>
      <td><span class="parametername">icon</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.uielement">UIElement</a></td>
      <td><span class="parametername">sender</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
</div>