Mega Code Archive
Your own Generic List Dictionary
Imports System
Imports System.Collections
Imports System.Collections.Generic
Imports System.Collections.Specialized
Public Class MainClass
Shared Sub Main(ByVal args As String())
Dim dict As New StudentListDictionary
dict.Add("111-11-1111", New Student("A", "A"))
dict.Add("333-22-3333", New Student("B", "B"))
dict.Add("444-44-4444", New Student("C", "C"))
dict.Add("555-55-5555", New Student("D", "D"))
Dim student As Student = dict.Item("111-11-1111")
Console.WriteLine(student.ToString)
End Sub
End Class
Public Class Student
Private m_FirstName As String
Private m_LastName As String
Public Sub New(ByVal first_name As String, ByVal last_name As String)
m_FirstName = first_name
m_LastName = last_name
End Sub
Public Overrides Function ToString() As String
Return m_FirstName & " " & m_LastName
End Function
End Class
Public Class StudentListDictionary
Inherits ListDictionary
' Add a Dictionary entry.
Public Shadows Sub Add(ByVal new_key As String, ByVal new_student As Student)
MyBase.Add(new_key, new_student)
End Sub
' Return an object with the given key.
Default Public Shadows Property Item(ByVal key As String) As Student
Get
Return DirectCast(MyBase.Item(key), Student)
End Get
Set(ByVal Value As Student)
MyBase.Item(key) = Value
End Set
End Property
' Return True if the Dictionary contains this Student.
Public Shadows Function Contains(ByVal key As String) As Boolean
Return MyBase.Contains(key)
End Function
' Remove this entry.
Public Shadows Sub Remove(ByVal key As String)
MyBase.Remove(key)
End Sub
End Class