Using Keys Property Of Dictionary Class In VB.NET

In this article I explained about Key Property of Dictionary Class.
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Keys

The Keys property gets a collection containing the keys in the Dictionary. It returns an object of KeyCollection type. The following code snippet reads all keys in a Dictionary.

Imports System.Collections.Generic

Module Module1

    Sub Main()

        ' Create a dictionary with string key and Int16 value pair

        Dim StudentDetailList As New Dictionary(Of String, Int16)()

        StudentDetailList.Add("Mahesh", 35)

        StudentDetailList.Add("Raj", 25)

        StudentDetailList.Add("Suresh", 29)

        StudentDetailList.Add("Nitin", 21)

        StudentDetailList.Add("Aman", 84)

        ' Read all data

        Console.WriteLine("Student Details List:")

        Console.WriteLine()

        For Each student As KeyValuePair(Of String, Int16) In StudentDetailList

            Console.WriteLine("Key: {0}, Value: {1}", student.Key, student.Value)

        Next

        Console.WriteLine()

        ' Get and display keys

        Dim keys As Dictionary(Of String, Int16).KeyCollection = StudentDetailList.Keys

        For Each key As String In keys

            Console.WriteLine("Key: {0}", key)

        Next

        Console.WriteLine()

        Console.ReadLine()

    End Sub

End Module

Output:

KeyProperty-of-dictionaryClass.jpg

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