# C1.Win.Map.IMapVirtualSource

## Content

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  <h1 id="C1_Win_Map_IMapVirtualSource" data-uid="C1.Win.Map.IMapVirtualSource" class="text-break">IMapVirtualSource Interface
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  <div class="markdown level0 summary"><p>Represents the items source for a <a class="xref" href="C1.Win.Map.VirtualLayer.html">VirtualLayer</a>.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.Map.html">C1.Win.Map</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.Map.10.dll</h6>
  <h5 id="C1_Win_Map_IMapVirtualSource_syntax">Syntax</h5>
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    <pre><code class="lang-csharp hljs">public interface IMapVirtualSource</code></pre>
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  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Interface IMapVirtualSource</code></pre>
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  <h3 id="methods">Methods
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  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
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        <td id="C1_Win_Map_IMapVirtualSource_Request_System_Double_System_Double_C1_Win_Interop_Point_C1_Win_Interop_Point_" data-uid="C1.Win.Map.IMapVirtualSource.Request(System.Double,System.Double,C1.Win.Interop.Point,C1.Win.Interop.Point)">
          <a class="xref" href="C1.Win.Map.IMapVirtualSource.Request.html#C1_Win_Map_IMapVirtualSource_Request_System_Double_System_Double_C1_Win_Interop_Point_C1_Win_Interop_Point_">Request(double, double, Point, Point)</a>
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        <td class="markdown level1 summary"><p>Called from <a class="xref" href="C1.Win.Map.VirtualLayer.html">VirtualLayer</a> when new items are needed for a map region.</p>
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      </tr>
    </tbody>
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