' 导入命名空间
Imports System.Windows.Forms


public class CheckedListBoxAddObjects
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Inherits System.Windows.Forms.Form
    Private Sub Form1_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles MyBase.Load
     
        Me.clbEmployees = New System.Windows.Forms.CheckedListBox
        Me.btnListSelections = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'clbEmployees
        '
        Me.clbEmployees.FormattingEnabled = True
        Me.clbEmployees.Location = New System.Drawing.Point(8, 8)
        Me.clbEmployees.Name = "clbEmployees"
        Me.clbEmployees.Size = New System.Drawing.Size(160, 123)
        Me.clbEmployees.TabIndex = 0
        '
        'btnListSelections
        '
        Me.btnListSelections.Location = New System.Drawing.Point(8, 152)
        Me.btnListSelections.Name = "btnListSelections"
        Me.btnListSelections.Size = New System.Drawing.Size(160, 23)
        Me.btnListSelections.TabIndex = 1
        Me.btnListSelections.Text = "List Selections"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(180, 187)
        Me.Controls.Add(Me.btnListSelections)
        Me.Controls.Add(Me.clbEmployees)
        Me.Name = "Form1"
        Me.Text = "UseCheckedListBox"
        Me.ResumeLayout(False)

     
        clbEmployees.Items.Add(New Employee("A", "A"), True)
        clbEmployees.Items.Add(New Employee("B", "B"), False)
        clbEmployees.Items.Add(New Employee("C", "C"), CheckState.Indeterminate)
    End Sub

    Private Sub btnListSelections_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnListSelections.Click
        Dim checked_items As CheckedListBox.CheckedItemCollection = clbEmployees.CheckedItems
        Console.WriteLine("Selected Employees:")
        For Each item As Object In checked_items
            Console.WriteLine(item.ToString)
        Next item
    End Sub

    Friend WithEvents clbEmployees As System.Windows.Forms.CheckedListBox
    Friend WithEvents btnListSelections As System.Windows.Forms.Button

End Class

Public Class Employee
    Public FirstName As String
    Public LastName As String

    Public Sub New(ByVal first_name As String, ByVal last_name As String)
        FirstName = first_name
        LastName = last_name
    End Sub

    Public Overrides Function ToString() As String
        Return FirstName & " " & LastName
    End Function
End Class