IDictionary.Keys Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets an ICollection object containing the keys of the IDictionary object.
Assembly: mscorlib (in mscorlib.dll)
Property Value
Type: System.Collections.ICollectionAn ICollection object containing the keys of the IDictionary object.
The order of the keys in the returned ICollection object is unspecified, but is guaranteed to be the same order as the corresponding values in the ICollection returned by the Values property.
The following code example demonstrates how to implement the Keys property. This code example is part of a larger example provided for the IDictionary class.
Public ReadOnly Property Keys() As ICollection Implements IDictionary.Keys Get ' Return an array where each item is a key. ' Note: Declaring keyArray() to have a size of ItemsInUse - 1 ' ensures that the array is properly sized, in VB.NET ' declaring an array of size N creates an array with ' 0 through N elements, including N, as opposed to N - 1 ' which is the default behavior in C# and C++. Dim keyArray() As Object = New Object(ItemsInUse - 1) {} Dim n As Integer For n = 0 To ItemsInUse - 1 keyArray(n) = items(n).Key Next n Return keyArray End Get End Property