nu=(|fs=&lt;'"></span>T<span id="LST6ED0F4E_4" data-languageSpecificText="cs=&gt;|vb=)|cpp=&gt;|nu=)|fs=&gt;"></span></a>.</dd></dl><h4>Return Value</h4><a href="https://learn.microsoft.com/dotnet/api/system.boolean" target="_blank" rel="noopener noreferrer">Boolean</a><br />true if <span class="parameter">item</span> is found in the <a href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1" target="_blank" rel="noopener noreferrer">ICollection<span id="LST6ED0F4E_5" data-lang