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gui-cs.Terminal.Gui
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            <article class="content wrap" id="_content" data-uid="Terminal.Gui.CollectionNavigator">
  
  
  <h1 id="Terminal_Gui_CollectionNavigator" data-uid="Terminal.Gui.CollectionNavigator" class="text-break">Class CollectionNavigator
  </h1>
  <div class="markdown level0 summary">
Navigates a collection of items using keystrokes. The keystrokes are used to build a search string. 
The <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_SearchString">SearchString</a> is used to find the next item in the collection that matches the search string
when <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_GetNextMatchingItem_System_Int32_System_Char_">GetNextMatchingItem(Int32, Char)</a> is called.
<p>
If the user types keystrokes that can&apos;t be found in the collection, 
the search string is cleared and the next item is found that starts with the last keystroke.
</p>
<p>
If the user pauses keystrokes for a short time (see <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_TypingDelay">TypingDelay</a>), the search string is cleared.
</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><span class="xref">System.Object</span></div>
    <div class="level1"><span class="xref">CollectionNavigator</span></div>
  </div>
  <div class="inheritedMembers">
    <h5>Inherited Members</h5>
    <div>
      <span class="xref">System.Object.Equals(System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Object.Equals(System.Object, System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Object.GetHashCode()</span>
    </div>
    <div>
      <span class="xref">System.Object.GetType()</span>
    </div>
    <div>
      <span class="xref">System.Object.MemberwiseClone()</span>
    </div>
    <div>
      <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Object.ToString()</span>
    </div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="Terminal.Gui.html">Terminal.Gui</a></h6>
  <h6><strong>Assembly</strong>: Terminal.Gui.dll</h6>
  <h5 id="Terminal_Gui_CollectionNavigator_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class CollectionNavigator</code></pre>
  </div>
  <h3 id="constructors">Constructors
  </h3>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator__ctor.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.%23ctor%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L22">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator__ctor_" data-uid="Terminal.Gui.CollectionNavigator.#ctor*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator__ctor" data-uid="Terminal.Gui.CollectionNavigator.#ctor">CollectionNavigator()</h4>
  <div class="markdown level1 summary">
Constructs a new CollectionNavigator.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public CollectionNavigator()</code></pre>
  </div>
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    <span class="divider">|</span>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L28">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator__ctor_" data-uid="Terminal.Gui.CollectionNavigator.#ctor*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator__ctor_System_Collections_Generic_IEnumerable_System_Object__" data-uid="Terminal.Gui.CollectionNavigator.#ctor(System.Collections.Generic.IEnumerable{System.Object})">CollectionNavigator(IEnumerable&lt;Object&gt;)</h4>
  <div class="markdown level1 summary">
Constructs a new CollectionNavigator for the given collection.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public CollectionNavigator(IEnumerable&lt;object&gt; collection)</code></pre>
  </div>
  <h5 class="parameters">Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Collections.Generic.IEnumerable</span>&lt;<span class="xref">System.Object</span>&gt;</td>
        <td><span class="parametername">collection</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h3 id="properties">Properties
  </h3>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_Collection.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.Collection%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L45">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator_Collection_" data-uid="Terminal.Gui.CollectionNavigator.Collection*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_Collection" data-uid="Terminal.Gui.CollectionNavigator.Collection">Collection</h4>
  <div class="markdown level1 summary">
The collection of objects to search. <span class="xref">System.Object.ToString()</span> is used to search the collection.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public IEnumerable&lt;object&gt; Collection { get; set; }</code></pre>
  </div>
  <h5 class="propertyValue">Property Value</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Collections.Generic.IEnumerable</span>&lt;<span class="xref">System.Object</span>&gt;</td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_Comparer.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.Comparer%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
  </span>
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  </span>
  <a id="Terminal_Gui_CollectionNavigator_Comparer_" data-uid="Terminal.Gui.CollectionNavigator.Comparer*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_Comparer" data-uid="Terminal.Gui.CollectionNavigator.Comparer">Comparer</h4>
  <div class="markdown level1 summary">
The compararer function to use when searching the collection.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public StringComparer Comparer { get; set; }</code></pre>
  </div>
  <h5 class="propertyValue">Property Value</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.StringComparer</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_SearchString.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.SearchString%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
  </span>
  <span class="small pull-right mobile-hide">
    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L76">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator_SearchString_" data-uid="Terminal.Gui.CollectionNavigator.SearchString*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_SearchString" data-uid="Terminal.Gui.CollectionNavigator.SearchString">SearchString</h4>
  <div class="markdown level1 summary">
Gets the current search string. This includes the set of keystrokes that have been pressed
since the last unsuccessful match or after <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_TypingDelay">TypingDelay</a>) milliseconds. Useful for debugging.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public string SearchString { get; }</code></pre>
  </div>
  <h5 class="propertyValue">Property Value</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.String</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_TypingDelay.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.TypingDelay%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L35">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator_TypingDelay_" data-uid="Terminal.Gui.CollectionNavigator.TypingDelay*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_TypingDelay" data-uid="Terminal.Gui.CollectionNavigator.TypingDelay">TypingDelay</h4>
  <div class="markdown level1 summary">
Gets or sets the number of milliseconds to delay before clearing the search string. The delay is
reset on each call to <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_GetNextMatchingItem_System_Int32_System_Char_">GetNextMatchingItem(Int32, Char)</a>. The default is 500ms.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public int TypingDelay { get; set; }</code></pre>
  </div>
  <h5 class="propertyValue">Property Value</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Int32</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h3 id="methods">Methods
  </h3>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_GetNextMatchingItem_System_Int32_System_Char_.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.GetNextMatchingItem(System.Int32%2CSystem.Char)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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  </span>
  <a id="Terminal_Gui_CollectionNavigator_GetNextMatchingItem_" data-uid="Terminal.Gui.CollectionNavigator.GetNextMatchingItem*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_GetNextMatchingItem_System_Int32_System_Char_" data-uid="Terminal.Gui.CollectionNavigator.GetNextMatchingItem(System.Int32,System.Char)">GetNextMatchingItem(Int32, Char)</h4>
  <div class="markdown level1 summary">
Gets the index of the next item in the collection that matches the current <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_SearchString">SearchString</a> plus the provided character (typically
from a key press).
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public int GetNextMatchingItem(int currentIndex, char keyStruck)</code></pre>
  </div>
  <h5 class="parameters">Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Int32</span></td>
        <td><span class="parametername">currentIndex</span></td>
        <td>The index in the collection to start the search from.</td>
      </tr>
      <tr>
        <td><span class="xref">System.Char</span></td>
        <td><span class="parametername">keyStruck</span></td>
        <td>The character of the key the user pressed.</td>
      </tr>
    </tbody>
  </table>
  <h5 class="returns">Returns</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Int32</span></td>
        <td>The index of the item that matches what the user has typed. 
Returns <span class="xref">langword_csharp_-1</span> if no item in the collection matched.</td>
      </tr>
    </tbody>
  </table>
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    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_IsCompatibleKey_Terminal_Gui_KeyEvent_.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.IsCompatibleKey(Terminal.Gui.KeyEvent)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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  </span>
  <a id="Terminal_Gui_CollectionNavigator_IsCompatibleKey_" data-uid="Terminal.Gui.CollectionNavigator.IsCompatibleKey*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_IsCompatibleKey_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.CollectionNavigator.IsCompatibleKey(Terminal.Gui.KeyEvent)">IsCompatibleKey(KeyEvent)</h4>
  <div class="markdown level1 summary">
Returns true if <code data-dev-comment-type="paramref" class="paramref">kb</code> is a searchable key
(e.g. letters, numbers etc) that is valid to pass to to this
class for search filtering.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static bool IsCompatibleKey(KeyEvent kb)</code></pre>
  </div>
  <h5 class="parameters">Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
        <td><span class="parametername">kb</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h5 class="returns">Returns</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Boolean</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
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    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_OnSearchStringChanged_Terminal_Gui_CollectionNavigator_KeystrokeNavigatorEventArgs_.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.OnSearchStringChanged(Terminal.Gui.CollectionNavigator.KeystrokeNavigatorEventArgs)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L88">View Source</a>
  </span>
  <a id="Terminal_Gui_CollectionNavigator_OnSearchStringChanged_" data-uid="Terminal.Gui.CollectionNavigator.OnSearchStringChanged*"></a>
  <h4 id="Terminal_Gui_CollectionNavigator_OnSearchStringChanged_Terminal_Gui_CollectionNavigator_KeystrokeNavigatorEventArgs_" data-uid="Terminal.Gui.CollectionNavigator.OnSearchStringChanged(Terminal.Gui.CollectionNavigator.KeystrokeNavigatorEventArgs)">OnSearchStringChanged(CollectionNavigator.KeystrokeNavigatorEventArgs)</h4>
  <div class="markdown level1 summary">
Invoked when the <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_SearchString">SearchString</a> changes. Useful for debugging. Invokes the <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_SearchStringChanged">SearchStringChanged</a> event.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public virtual void OnSearchStringChanged(CollectionNavigator.KeystrokeNavigatorEventArgs e)</code></pre>
  </div>
  <h5 class="parameters">Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><a class="xref" href="Terminal.Gui.CollectionNavigator.KeystrokeNavigatorEventArgs.html">CollectionNavigator.KeystrokeNavigatorEventArgs</a></td>
        <td><span class="parametername">e</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h3 id="events">Events
  </h3>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/docfx/overrides/new?filename=Terminal_Gui_CollectionNavigator_SearchStringChanged.md&amp;value=---%0Auid%3A%20Terminal.Gui.CollectionNavigator.SearchStringChanged%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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    <a href="https://github.com/gui-cs/Terminal.Gui/blob/develop/Terminal.Gui/Core/CollectionNavigator.cs/#L69">View Source</a>
  </span>
  <h4 id="Terminal_Gui_CollectionNavigator_SearchStringChanged" data-uid="Terminal.Gui.CollectionNavigator.SearchStringChanged">SearchStringChanged</h4>
  <div class="markdown level1 summary">
This event is invoked when <a class="xref" href="Terminal.Gui.CollectionNavigator.html#Terminal_Gui_CollectionNavigator_SearchString">SearchString</a>  changes. Useful for debugging.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public event Action&lt;CollectionNavigator.KeystrokeNavigatorEventArgs&gt; SearchStringChanged</code></pre>
  </div>
  <h5 class="eventType">Event Type</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Action</span>&lt;<a class="xref" href="Terminal.Gui.CollectionNavigator.KeystrokeNavigatorEventArgs.html">CollectionNavigator.KeystrokeNavigatorEventArgs</a>&gt;</td>
        <td></td>
      </tr>
    </tbody>
  </table>
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