VB.Net Tutorial/Generics/Generic List — различия между версиями

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м (1 версия)
 
м (1 версия)
 
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Текущая версия на 12:56, 26 мая 2010

Generic list of user objects

Imports System.Collections.Generic
public class Test
  
   public Shared Sub Main

        Dim emp_list As New EmployeeList
        emp_list.Add(New Employee("G", "M"))
        emp_list.Add("Z", "M")
   End Sub
   
End class
Public Class Employee
    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 EmployeeList
    Inherits List(Of Employee)
    Public Overloads Sub Add(ByVal first_name As String, ByVal last_name As String)
        Dim emp As New Employee(first_name, last_name)
        MyBase.Add(emp)
    End Sub
End Class

Use generic List

Imports System.Collections.Generic
public class Test
  
   public Shared Sub Main
        Dim places As New List(Of String)
        places.Add("A")
        places.Add("B")
        places.Add("C")
        places.Add("D")
   End Sub
   
End class