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OrderedDictionary<TKey,TValue>.TryAdd(TKey, TValue) Method

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Definition

Namespace:
System.Collections.Generic
Assembly:
System.Collections.dll

Adds the specified key and value to the dictionary if the key doesn't already exist.

public:
 bool TryAdd(TKey key, TValue value);
public bool TryAdd (TKey key, TValue value);
member this.TryAdd : 'Key * 'Value -> bool
Public Function TryAdd (key As TKey, value As TValue) As Boolean

Parameters

key
TKey

The key of the element to add.

value
TValue

The value of the element to add. The value can be null for reference types.

Returns

Boolean

true if the key didn't exist and the key and value were added to the dictionary; otherwise, false.

Exceptions

ArgumentNullException

key is null.

Applies to