ReadOnlyDictionary<TKey,TValue>.KeyCollection.ICollection<TKey>.Contains Method

Reference

Definition

Namespace:: System.Collections.ObjectModel

Assemblies:: mscorlib.dll, System.ObjectModel.dll

Assemblies:: netstandard.dll, System.ObjectModel.dll

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.ObjectModel.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: ReadOnlyDictionary.cs

Important

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Determines whether the collection contains a specific value.

 virtual bool System.Collections.Generic.ICollection<TKey>.Contains(TKey item) = System::Collections::Generic::ICollection<TKey>::Contains;

bool ICollection<TKey>.Contains(TKey item);

abstract member System.Collections.Generic.ICollection<TKey>.Contains : 'Key -> bool
override this.System.Collections.Generic.ICollection<TKey>.Contains : 'Key -> bool

Function Contains (item As TKey) As Boolean Implements ICollection(Of TKey).Contains

Parameters

item: TKey

The object to locate in the collection.

Returns

Boolean

true if item is found in the collection; otherwise, false.

Implements

Contains(T)

Remarks

This member is an explicit interface member implementation. It can be used only when the ReadOnlyDictionary<TKey,TValue>.KeyCollection instance is cast to an ICollection<T> interface.

Applies to

Продукт	Версии
.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
.NET Framework	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, 1.6, 2.0, 2.1
UWP	10.0

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