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

.NET Framework (current version)
 

Determines whether the dictionary contains an element that has the specified key.

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

private:
virtual bool Contains(
	Object^ key
) sealed = IDictionary::Contains

Parameters

key
Type: System::Object^

The key to locate in the dictionary.

Return Value

Type: System::Boolean

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

Exception Condition
ArgumentNullException

key is null.

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
Return to top
Show: