Dictionary<TKey, TValue>::ICollection<KeyValuePair<TKey, TValue>>::Contains Method (KeyValuePair<TKey, TValue>)

 

Determines whether the ICollection<T> contains a specific key and value.

Namespace:   System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

private:
virtual bool Contains(
	KeyValuePair<TKey, TValue> keyValuePair
) sealed = ICollection<KeyValuePair<TKey, TValue>>::Contains

Parameters

keyValuePair
Type: System.Collections.Generic::KeyValuePair<TKey, TValue>

The KeyValuePair<TKey, TValue> structure to locate in the ICollection<T>.

Return Value

Type: System::Boolean

true if keyValuePair is found in the ICollection<T>; otherwise, false.

This method determines equality using the default equality comparer Default for the KeyValuePair<TKey, TValue> structure.

This method approaches an O(1) operation.

The following example shows how to use the ICollection<KeyValuePair<TKey, TValue>>::Add, ICollection<KeyValuePair<TKey, TValue>>::Contains, ICollection<KeyValuePair<TKey, TValue>>::CopyTo, and ICollection<KeyValuePair<TKey, TValue>>::Remove methods of the ICollection<T> generic interface to manipulate a Dictionary<TKey, TValue> object.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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