# C1.DataCollection.ISupportAsyncLoading-1

## Content

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  <h1 id="C1_DataCollection_ISupportAsyncLoading_1" data-uid="C1.DataCollection.ISupportAsyncLoading`1" class="text-break">ISupportAsyncLoading&lt;T&gt; Interface
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  <div class="markdown level0 summary"><p>Specifies a calling contract for collection that support asynchronous loading.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.DataCollection.html">C1.DataCollection</a></h6>
  <h6><strong>Assembly</strong>: C1.DataCollection.dll</h6>
  <h5 id="C1_DataCollection_ISupportAsyncLoading_1_syntax">Syntax</h5>
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    <pre><code class="lang-csharp hljs">public interface ISupportAsyncLoading&lt;out T&gt;</code></pre>
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  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Interface ISupportAsyncLoading(Of Out T)</code></pre>
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  <h5 class="typeParameters">Type Parameters</h5>
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    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
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      <tr>
        <td><span class="parametername">T</span></td>
        <td></td>
      </tr>
    </tbody>
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  <h3 id="methods">Methods
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    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_DataCollection_ISupportAsyncLoading_1_GetLoadedItems_System_Nullable_System_Int32__System_Nullable_System_Int32__" data-uid="C1.DataCollection.ISupportAsyncLoading`1.GetLoadedItems(System.Nullable{System.Int32},System.Nullable{System.Int32})">
          <a class="xref" href="C1.DataCollection.ISupportAsyncLoading-1.GetLoadedItems.html#C1_DataCollection_ISupportAsyncLoading_1_GetLoadedItems_System_Nullable_System_Int32__System_Nullable_System_Int32__">GetLoadedItems(int?, int?)</a>
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        <td class="markdown level1 summary"><p>Returns all the items that has been loaded so far.</p>
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      </tr>
      <tr>
        <td id="C1_DataCollection_ISupportAsyncLoading_1_LoadAsync_System_Nullable_System_Int32__System_Nullable_System_Int32__System_Threading_CancellationToken_" data-uid="C1.DataCollection.ISupportAsyncLoading`1.LoadAsync(System.Nullable{System.Int32},System.Nullable{System.Int32},System.Threading.CancellationToken)">
          <a class="xref" href="C1.DataCollection.ISupportAsyncLoading-1.LoadAsync.html#C1_DataCollection_ISupportAsyncLoading_1_LoadAsync_System_Nullable_System_Int32__System_Nullable_System_Int32__System_Threading_CancellationToken_">LoadAsync(int?, int?, CancellationToken)</a>
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        <td class="markdown level1 summary"><p>Load the items between the specified indexes.</p>
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