Question

I have a class like this

Public Class Settings

        Private _app_folder As String = ""
        Public Property AppFolder() As String
            Get
                Return _app_folder
            End Get
            Set(ByVal value As String)
                _app_folder = value
            End Set
        End Property [...]

Then in another class, I declare it

_settings = New Settings

and I set the value for each property

_settings.AppFolder = "test"

But how can I edit “_settings.AppFolder” property to “readonly” ?

Answer 1

In addition to RB’s answer you could implement an interface and use that (rather than the class) when you require read-only behavior of the property.

Public Interface IReadonlySettings
    ReadOnly Property AppFolder() As String
End Interface

Public Class Settings
    Implements IReadonlySettings

    Private m_AppFolder As String

    Public Property AppFolder() As String
        Get
            Return m_AppFolder
        End Get
        Set
            m_AppFolder = Value
        End Set
    End Property

    private readonly Property ReadonlyAppFolder() As String implements IReadonlySettings.AppFolder
        Get
            Return m_AppFolder
        End Get
    End Property

End Class