IReadOnlyDictionary<TKey,TValue>.TryGetValue(TKey, TValue) Method
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Gets the value that is associated with the specified key.
public:
bool TryGetValue(TKey key, [Runtime::InteropServices::Out] TValue % value);public bool TryGetValue(TKey key, out TValue value);abstract member TryGetValue : 'Key * 'Value -> boolPublic Function TryGetValue (key As TKey, ByRef value As TValue) As Boolean- key
- TKey
The key to locate.
- value
- TValue
When this method returns, the value associated with the specified key, if the key is found; otherwise, the default value for the type of the value parameter. This parameter is passed uninitialized.
true if the object that implements the IReadOnlyDictionary<TKey,TValue> interface contains an element that has the specified key; otherwise, false.
key is null.
This method combines the functionality of the ContainsKey method and the Item[] property.
If the key is not found, the value parameter gets the appropriate default value for the type TValue: for example, 0 (zero) for integer types, false for Boolean types, and null for reference types.
| 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 | 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, 1.5, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
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