Dictionary<TKey,TValue>.TryAdd(TKey, TValue) Method
Definition
Important
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Attempts to add the specified key and value to the dictionary.
public:
bool TryAdd(TKey key, TValue value);public bool TryAdd (TKey key, TValue value);member this.TryAdd : 'Key * 'Value -> boolPublic Function TryAdd (key As TKey, value As TValue) As BooleanParameters
- key
- TKey
The key of the element to add.
- value
- TValue
The value of the element to add. It can be null.
Returns
true if the key/value pair was added to the dictionary successfully; otherwise, false.
Exceptions
key is null.
Remarks
Unlike the Add method, this method doesn't throw an exception if the element with the given key exists in the dictionary. Unlike the Dictionary indexer, TryAdd doesn't override the element if the element with the given key exists in the dictionary. If the key already exists, TryAdd does nothing and returns false.
