ImmutableDictionary<TKey,TValue>.Builder.Contains Method  
Definition
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.
Determines whether the immutable dictionary contains a specific value.
public:
 virtual bool Contains(System::Collections::Generic::KeyValuePair<TKey, TValue> item);public bool Contains(System.Collections.Generic.KeyValuePair<TKey,TValue> item);abstract member Contains : System.Collections.Generic.KeyValuePair<'Key, 'Value> -> bool
override this.Contains : System.Collections.Generic.KeyValuePair<'Key, 'Value> -> boolPublic Function Contains (item As KeyValuePair(Of TKey, TValue)) As BooleanParameters
The object to locate in the dictionary.
Returns
true if item is found in the dictionary; otherwise, false.