Dictionary<TKey,TValue>.ContainsValue(TValue) Method
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Determines whether the Dictionary<TKey,TValue> contains a specific value.
public:
bool ContainsValue(TValue value);
public bool ContainsValue(TValue value);
member this.ContainsValue : 'Value -> bool
Public Function ContainsValue (value As TValue) As Boolean
- value
- TValue
The value to locate in the Dictionary<TKey,TValue>. The value can be null
for reference types.
true
if the Dictionary<TKey,TValue> contains an element with the specified value; otherwise, false
.
This method determines equality using the default equality comparer EqualityComparer<T>.Default for TValue
, the type of values in the dictionary.
This method performs a linear search; therefore, the average execution time is proportional to Count. That is, this method is an O(n
) operation, where n
is Count.
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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