ImmutableDictionary.Contains(IImmutableDictionary<TKey,TValue>, TKey, TValue) ImmutableDictionary.Contains(IImmutableDictionary<TKey,TValue>, TKey, TValue) ImmutableDictionary.Contains(IImmutableDictionary<TKey,TValue>, TKey, TValue) ImmutableDictionary.Contains(IImmutableDictionary<TKey,TValue>, TKey, TValue) Method

定义

确定指定的不可变字典是否包含指定的键/值对。Determines whether the specified immutable dictionary contains the specified key/value pair.

public:
generic <typename TKey, typename TValue>
[System::Runtime::CompilerServices::Extension]
 static bool Contains(System::Collections::Immutable::IImmutableDictionary<TKey, TValue> ^ map, TKey key, TValue value);
public static bool Contains<TKey,TValue> (this System.Collections.Immutable.IImmutableDictionary<TKey,TValue> map, TKey key, TValue value);
static member Contains : System.Collections.Immutable.IImmutableDictionary<'Key, 'Value> * 'Key * 'Value -> bool
<Extension()>
Public Function Contains(Of TKey, TValue) (map As IImmutableDictionary(Of TKey, TValue), key As TKey, value As TValue) As Boolean

类型参数

TKey

不可变字典中键的类型。The type of the keys in the immutable dictionary.

TValue

不可变字典中值的类型。The type of the values in the immutable dictionary.

参数

key
TKey TKey TKey TKey

要在不可变字典中查找的键。The key to locate in the immutable dictionary.

value
TValue TValue TValue TValue

找到指定的键时,要在该键中查找的值。The value to locate on the specified key, if the key is found.

返回

如果此映射包含指定的键/值对,则为 true;否则为 falsetrue if this map contains the specified key/value pair; otherwise, false.

适用于