IReadOnlyDictionary(Of TKey, TValue).Item Property (TKey)

.NET Framework (current version)
 

Gets the element that has the specified key in the read-only dictionary.

Namespace:   System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

ReadOnly Property Item (
	key As TKey
) As TValue

Parameters

key
Type: TKey

The key to locate.

Property Value

Type: TValue

The element that has the specified key in the read-only dictionary.

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(Of TKey, TValue) might use the Comparer(Of T).Default property, or it might implement the IComparer(Of T) method.

Implementations can vary in whether they allow key to be null.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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