IReadOnlyDictionary<TKey, TValue>.Item Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets the element that has the specified key in the read-only dictionary.
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| ArgumentNullException | key is null. |
| KeyNotFoundException | The property is retrieved and key is not found. |
This property lets you access a specific element in the collection by using the following syntax: myCollection[key] (myCollection(key) in Visual Basic).
Implementations can vary in how they determine the equality of objects: for example, the class that implements IReadOnlyDictionary<TKey, TValue> might use the Comparer<T>.Default property, or it might implement the IComparer<T> method.
Implementations can vary in whether they allow key to be null.