ReadOnlyCollection<T>.IList.Contains(Object) Method
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Determines whether the IList contains a specific value.
virtual bool System.Collections.IList.Contains(System::Object ^ value) = System::Collections::IList::Contains;
bool IList.Contains(object value);
abstract member System.Collections.IList.Contains : obj -> bool
override this.System.Collections.IList.Contains : obj -> bool
Function Contains (value As Object) As Boolean Implements IList.Contains
true
if the Object is found in the IList; otherwise, false
.
value
is not of the type specified for the generic type parameter T
.
This method determines equality using the default comparer EqualityComparer<T>.Default.
This method performs a linear search; therefore, this method is an O(n
) operation, where n
is Count.
This member is an explicit interface member implementation. It can be used only when the ReadOnlyCollection<T> instance is cast to an IList interface.
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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