ConcurrentDictionary<TKey,TValue>.IDictionary.Contains(Object) Method

Reference

Definition

Namespace:: System.Collections.Concurrent

Assemblies:: mscorlib.dll, System.Collections.Concurrent.dll

Assemblies:: netstandard.dll, System.Collections.Concurrent.dll

Assembly:: System.Collections.Concurrent.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: ConcurrentDictionary.cs

Source:: ConcurrentDictionary.cs

Source:: ConcurrentDictionary.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets a value that indicates the IDictionary<TKey,TValue> contains an element with the specified key.

 virtual bool System.Collections.IDictionary.Contains(System::Object ^ key) = System::Collections::IDictionary::Contains;

bool IDictionary.Contains(object key);

abstract member System.Collections.IDictionary.Contains : obj -> bool
override this.System.Collections.IDictionary.Contains : obj -> bool

Function Contains (key As Object) As Boolean Implements IDictionary.Contains

Parameters

key: Object

The key to locate in the IDictionary<TKey,TValue>.

Returns

Boolean

true if the IDictionary<TKey,TValue> contains an element with the specified key; otherwise, false.

Implements

Contains(Object)

Exceptions

ArgumentNullException

key is null.

Applies to

Производ	Верзије
.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, 10
.NET Framework	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	1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP	10.0

Делите путем