VB.Net Tutorial/Generics/Generic Dictionary

Create generic Dictionary

<source lang="vbnet">Imports System.Collections.Generic public class Test

  public Shared Sub Main
       
     Dim m_PairDictionary As New PairDictionary(Of Integer, String, String)
     m_PairDictionary.Add(1,"A", "B")

     Dim value1 As String = Nothing
     Dim value2 As String = Nothing
     m_PairDictionary.GetItem(1,value1, value2)
     Console.WriteLine(value1)
     Console.WriteLine(value2)
     m_PairDictionary.Remove(1)
  End Sub

End class

Public Class PairDictionary(Of KeyType, DataType1, DataType2)

   Private Structure DataPair
       Public Data1 As DataType1
       Public Data2 As DataType2
       Public Sub New(ByVal data_value1 As DataType1, ByVal data_value2 As DataType2)
           Data1 = data_value1
           Data2 = data_value2
       End Sub
   End Structure
   Private m_Dictionary As New Dictionary(Of KeyType, DataPair)
   Public ReadOnly Property Count() As Integer
       Get
           Return m_Dictionary.Count
       End Get
   End Property
   Public Sub Add(ByVal key As KeyType, ByVal data_value1 As DataType1, ByVal data_value2 As DataType2)
       m_Dictionary.Add(key, New DataPair(data_value1, data_value2))
   End Sub
   Public Sub Clear()
       m_Dictionary.Clear()
   End Sub
   Public Function ContainsKey(ByVal key As KeyType) As Boolean
       Return m_Dictionary.ContainsKey(key)
   End Function
   Public Sub GetItem(ByVal key As KeyType, ByRef data_value1 As DataType1, ByRef data_value2 As DataType2)
       Dim data_pair As DataPair = m_Dictionary.Item(key)
       data_value1 = data_pair.Data1
       data_value2 = data_pair.Data2
   End Sub
   Public Sub SetItem(ByVal key As KeyType, ByVal data_value1 As DataType1, ByVal data_value2 As DataType2)
       m_Dictionary.Item(key) = New DataPair(data_value1, data_value2)
   End Sub
   Public ReadOnly Property Keys() As System.Collections.ICollection
       Get
           Return m_Dictionary.Keys()
       End Get
   End Property
   Public Sub Remove(ByVal key As KeyType)
       m_Dictionary.Remove(key)
   End Sub

End Class</source>

A
B