Parameters
- key
- The key of the item.
Return Value
{b}True{/b} - the data storage contains an item with the specified key; {b}false{/b} - the data storage does NOT contain an item with the specified key.
| Исключение | Описание |
|---|---|
| System.ArgumentNullException | Thrown if {i}key{/i} is {b}null{/b} or empty. |
Целевые платформы: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5