IReadOnlyDictionary<TKey,TValue>.TryGetValue(TKey, TValue) Method
Definition
Important
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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 BooleanParameters
- 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.
Returns
true if the object that implements the IReadOnlyDictionary<TKey,TValue> interface contains an element that has the specified key; otherwise, false.
Exceptions
key is null.
Remarks
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.
