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    <title>Interface ITreeBuilder&lt;T&gt;
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            <article class="content wrap" id="_content" data-uid="Terminal.Gui.Trees.ITreeBuilder`1">
  
  
  <h1 id="Terminal_Gui_Trees_ITreeBuilder_1" data-uid="Terminal.Gui.Trees.ITreeBuilder`1" class="text-break">Interface ITreeBuilder&lt;T&gt;
  </h1>
  <div class="markdown level0 summary">
Interface for supplying data to a <a class="xref" href="Terminal.Gui.TreeView-1.html">TreeView&lt;T&gt;</a> on demand as root level nodes
are expanded by the user
</div>
  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="Terminal.Gui.Trees.html">Terminal.Gui.Trees</a></h6>
  <h6><strong>Assembly</strong>: Terminal.Gui.dll</h6>
  <h5 id="Terminal_Gui_Trees_ITreeBuilder_1_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public interface ITreeBuilder&lt;T&gt;</code></pre>
  </div>
  <h5 class="typeParameters">Type Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="parametername">T</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/apidoc/new?filename=Terminal_Gui_Trees_ITreeBuilder_1_SupportsCanExpand.md&amp;value=---%0Auid%3A%20Terminal.Gui.Trees.ITreeBuilder%601.SupportsCanExpand%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="tig:tig/gui.cs/blob/main/Terminal.Gui/Core/Trees/ITreeBuilder.cs/#L13">View Source</a>
  </span>
  <a id="Terminal_Gui_Trees_ITreeBuilder_1_SupportsCanExpand_" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.SupportsCanExpand*"></a>
  <h4 id="Terminal_Gui_Trees_ITreeBuilder_1_SupportsCanExpand" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.SupportsCanExpand">SupportsCanExpand</h4>
  <div class="markdown level1 summary">
Returns true if <a class="xref" href="Terminal.Gui.Trees.ITreeBuilder-1.html#Terminal_Gui_Trees_ITreeBuilder_1_CanExpand__0_">CanExpand(T)</a> is implemented by this class
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">bool SupportsCanExpand { 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.Boolean</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/apidoc/new?filename=Terminal_Gui_Trees_ITreeBuilder_1_CanExpand__0_.md&amp;value=---%0Auid%3A%20Terminal.Gui.Trees.ITreeBuilder%601.CanExpand(%600)%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="tig:tig/gui.cs/blob/main/Terminal.Gui/Core/Trees/ITreeBuilder.cs/#L26">View Source</a>
  </span>
  <a id="Terminal_Gui_Trees_ITreeBuilder_1_CanExpand_" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.CanExpand*"></a>
  <h4 id="Terminal_Gui_Trees_ITreeBuilder_1_CanExpand__0_" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.CanExpand(`0)">CanExpand(T)</h4>
  <div class="markdown level1 summary">
Returns true/false for whether a model has children.  This method should be implemented
when <a class="xref" href="Terminal.Gui.Trees.ITreeBuilder-1.html#Terminal_Gui_Trees_ITreeBuilder_1_GetChildren__0_">GetChildren(T)</a> is an expensive operation otherwise 
<a class="xref" href="Terminal.Gui.Trees.ITreeBuilder-1.html#Terminal_Gui_Trees_ITreeBuilder_1_SupportsCanExpand">SupportsCanExpand</a> should return false (in which case this method will not
be called)
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">bool CanExpand(T toExpand)</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">T</span></td>
        <td><span class="parametername">toExpand</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>
  <span class="small pull-right mobile-hide">
    <span class="divider">|</span>
    <a href="https://github.com/gui-cs/Terminal.Gui/new/develop/apidoc/new?filename=Terminal_Gui_Trees_ITreeBuilder_1_GetChildren__0_.md&amp;value=---%0Auid%3A%20Terminal.Gui.Trees.ITreeBuilder%601.GetChildren(%600)%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="tig:tig/gui.cs/blob/main/Terminal.Gui/Core/Trees/ITreeBuilder.cs/#L34">View Source</a>
  </span>
  <a id="Terminal_Gui_Trees_ITreeBuilder_1_GetChildren_" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.GetChildren*"></a>
  <h4 id="Terminal_Gui_Trees_ITreeBuilder_1_GetChildren__0_" data-uid="Terminal.Gui.Trees.ITreeBuilder`1.GetChildren(`0)">GetChildren(T)</h4>
  <div class="markdown level1 summary">
Returns all children of a given <code data-dev-comment-type="paramref" class="paramref">forObject</code> which should be added to the 
tree as new branches underneath it
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">IEnumerable&lt;T&gt; GetChildren(T forObject)</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">T</span></td>
        <td><span class="parametername">forObject</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.Collections.Generic.IEnumerable</span>&lt;T&gt;</td>
        <td></td>
      </tr>
    </tbody>
  </table>
</article>
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