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

Definition

Determines whether the dictionary contains an element that has 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 dictionary.

Returns

true if the dictionary contains an element that has the specified key; otherwise, false.

Implements

Exceptions

key is null.

Remarks

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

Applies to