# GrapeCity.Documents.Common.ObservableCollectionEx-1

## Content

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  <h1 id="GrapeCity_Documents_Common_ObservableCollectionEx_1" data-uid="GrapeCity.Documents.Common.ObservableCollectionEx`1" class="text-break">ObservableCollectionEx&lt;TItem&gt; Class
</h1>
  <div class="markdown level0 summary"><p>Extended version of <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.objectmodel.observablecollection-1">ObservableCollection&lt;T&gt;</a>.</p>
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  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
    <div class="level1"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.objectmodel.collection-1">Collection</a>&lt;TItem&gt;</div>
    <div class="level2"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.objectmodel.observablecollection-1">ObservableCollection</a>&lt;TItem&gt;</div>
    <div class="level3"><span class="xref">ObservableCollectionEx&lt;TItem&gt;</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ilist-1">IList</a>&lt;TItem&gt;</div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1">ICollection</a>&lt;TItem&gt;</div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ireadonlylist-1">IReadOnlyList</a>&lt;TItem&gt;</div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ireadonlycollection-1">IReadOnlyCollection</a>&lt;TItem&gt;</div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1">IEnumerable</a>&lt;TItem&gt;</div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.specialized.inotifycollectionchanged">INotifyCollectionChanged</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.inotifypropertychanged">INotifyPropertyChanged</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ilist">IList</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.icollection">ICollection</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ienumerable">IEnumerable</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="GrapeCity.Documents.Common.html">GrapeCity.Documents.Common</a></h6>
  <h6><strong>Assembly</strong>: DS.Documents.Imaging.dll</h6>
  <h5 id="GrapeCity_Documents_Common_ObservableCollectionEx_1_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class ObservableCollectionEx&lt;TItem&gt; : ObservableCollection&lt;TItem&gt;, IList&lt;TItem&gt;, ICollection&lt;TItem&gt;, IReadOnlyList&lt;TItem&gt;, IReadOnlyCollection&lt;TItem&gt;, IEnumerable&lt;TItem&gt;, INotifyCollectionChanged, INotifyPropertyChanged, IList, ICollection, IEnumerable</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Class ObservableCollectionEx(Of TItem)
    Inherits ObservableCollection(Of TItem)
    Implements IList(Of TItem), ICollection(Of TItem), IReadOnlyList(Of TItem), IReadOnlyCollection(Of TItem), IEnumerable(Of TItem), INotifyCollectionChanged, INotifyPropertyChanged, IList, ICollection, IEnumerable</code></pre>
  </div>
  <h5 class="typeParameters">Type Parameters</h5>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="parametername">TItem</span></td>
        <td><p>The type of collection item.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="constructors">Constructors
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="GrapeCity_Documents_Common_ObservableCollectionEx_1__ctor" data-uid="GrapeCity.Documents.Common.ObservableCollectionEx`1.#ctor">
          <a class="xref" href="GrapeCity.Documents.Common.ObservableCollectionEx-1.-ctor.html#GrapeCity_Documents_Common_ObservableCollectionEx_1__ctor">ObservableCollectionEx()</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>
  <h3 id="properties">Properties
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="GrapeCity_Documents_Common_ObservableCollectionEx_1_Changed" data-uid="GrapeCity.Documents.Common.ObservableCollectionEx`1.Changed">
          <a class="xref" href="GrapeCity.Documents.Common.ObservableCollectionEx-1.Changed.html#GrapeCity_Documents_Common_ObservableCollectionEx_1_Changed">Changed</a>
        </td>
        <td class="markdown level1 summary"><p>Gets a value indicating whether the collection was changed.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="methods">Methods
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="GrapeCity_Documents_Common_ObservableCollectionEx_1_OnCollectionChanged_System_Collections_Specialized_NotifyCollectionChangedEventArgs_" data-uid="GrapeCity.Documents.Common.ObservableCollectionEx`1.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs)">
          <a class="xref" href="GrapeCity.Documents.Common.ObservableCollectionEx-1.OnCollectionChanged.html#GrapeCity_Documents_Common_ObservableCollectionEx_1_OnCollectionChanged_System_Collections_Specialized_NotifyCollectionChangedEventArgs_">OnCollectionChanged(NotifyCollectionChangedEventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Common_ObservableCollectionEx_1_OnPropertyChanged_System_ComponentModel_PropertyChangedEventArgs_" data-uid="GrapeCity.Documents.Common.ObservableCollectionEx`1.OnPropertyChanged(System.ComponentModel.PropertyChangedEventArgs)">
          <a class="xref" href="GrapeCity.Documents.Common.ObservableCollectionEx-1.OnPropertyChanged.html#GrapeCity_Documents_Common_ObservableCollectionEx_1_OnPropertyChanged_System_ComponentModel_PropertyChangedEventArgs_">OnPropertyChanged(PropertyChangedEventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>

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