ReadOnlyDictionary<TKey,TValue>.IDictionary<TKey,TValue>.Item[TKey] 属性

定义

获取具有指定键的元素。Gets the element that has the specified key.

property TValue System::Collections::Generic::IDictionary<TKey,TValue>::Item[TKey] { TValue get(TKey key); void set(TKey key, TValue value); };
TValue System.Collections.Generic.IDictionary<TKey,TValue>.Item[TKey key] { get; set; }
member this.System.Collections.Generic.IDictionary<TKey,TValue>.Item('Key) : 'Value with get, set
 Property Item(key As TKey) As TValue Implements IDictionary(Of TKey, TValue).Item

参数

key
TKey

要获取或设置的元素的键。The key of the element to get or set.

属性值

TValue

具有指定键的元素。The element that has the specified key.

实现

例外

keynullkey is null.

检索了属性但没有找到 keyThe property is retrieved and key is not found.

设置该属性。The property is set.

适用于