Вот что попробовать, используйте BindingSource для настройки ListBox. В классе переопределите ToString на то, что должно отображаться в ListBox, а не на то, что вы делаете сейчас без DataSource.
Моя версия вашего класса содержит изменения имени и имени свойства.
Public Class Address
Public Property Name() As String
Public Property Email() As String
Public Property Phone() As String
Public Property Comment() As String
Public Overrides Function ToString() As String
Return $"{Name} {Email} {Phone} {Comment}"
End Function
End Class
Проверенные данные используются для заполнения ListBox
Public Class Form1
Private ReadOnly _bsAddresses As New BindingSource
Private Sub UpdateListBox()
Dim AddressList = New List(Of Address) From
{
New Address() With {
.Name = "John",
.Email = "john@gmail.com",
.Phone = "555-444-3456",
.Comment = "AAA"},
New Address() With {
.Name = "Mary",
.Email = "mary@gmail.com",
.Phone = "888-333-2222",
.Comment = "BBB"},
New Address() With {
.Name = "Bob",
.Email = "bob@gmail.com",
.Phone = "111-555-9999",
.Comment = "CCC"}
}
_bsAddresses.DataSource = AddressList
lstAddress.DataSource = _bsAddresses
lstAddress.SelectedIndex = 0
End Sub
Private Sub Form1_Shown(sender As Object, e As EventArgs) _
Handles Me.Shown
UpdateListBox()
End Sub
Private Sub RemoveButton_Click(sender As Object, e As EventArgs) _
Handles RemoveButton.Click
If lstAddress.Items.Count > 0 AndAlso lstAddress.SelectedItem IsNot Nothing Then
Dim address = CType(_bsAddresses.Current, Address)
If My.Dialogs.Question($"Remove {address.Name}") Then
_bsAddresses.RemoveCurrent()
RemoveButton.Enabled = _bsAddresses.Count > 0
End If
End If
End Sub
End Class
Модуль кода для задания вопроса
Namespace My
<ComponentModel.EditorBrowsable(ComponentModel.EditorBrowsableState.Never)>
Partial Friend Class _Dialogs
Public Function Question(text As String) As Boolean
Return (MessageBox.Show(
text,
My.Application.Info.Title,
MessageBoxButtons.YesNo,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button2) = MsgBoxResult.Yes)
End Function
End Class
<HideModuleName()>
Friend Module WinFormsDialogs
Private instance As New ThreadSafeObjectProvider(Of _Dialogs)
ReadOnly Property Dialogs() As _Dialogs
Get
Return instance.GetInstance()
End Get
End Property
End Module
End Namespace