# C1.DataCollection.C1DataCollectionList-1.IsReadOnly

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<h1 id="C1_DataCollection_C1DataCollectionList_1_IsReadOnly_" data-uid="C1.DataCollection.C1DataCollectionList`1.IsReadOnly*">IsReadOnly Property
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<h4 id="C1_DataCollection_C1DataCollectionList_1_IsReadOnly" data-uid="C1.DataCollection.C1DataCollectionList`1.IsReadOnly">IsReadOnly</h4>
<div class="markdown level1 summary"><p>Gets or sets a value indicating whether the <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1">ICollection&lt;T&gt;</a> is read-only.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public bool IsReadOnly { get; protected set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property IsReadOnly As Boolean</code></pre>
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<h5 class="implements">Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1.isreadonly">ICollection&lt;T&gt;.IsReadOnly</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ilist.isreadonly">IList.IsReadOnly</a></div>
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