چه زمانی از RemoveHandler استفاده کنیم؟!

[ROSTAM2]

سلام

من تو ی Collection سفارشی آیتم هایی اضافه می کنم که از AddHandler برای اجرای رویدادشون استفاده می کنم !

آیا زمانی که قرار است آیتمی از Collection حذف بشه نیازی به استفاده از RemoveHandler می باشد یا نه؟!

Public Class ItemButtonsCollection

    Inherits Dictionary(Of Guid, ItemButtons)

    Enum ButtonTypes

        None = 0

        Hidden = 1

        Edit = 2

        Delete = 3

    End Enum

    Public Event ButtonClicked(ID As Guid, Button As HtmlElement, ButtonType As ButtonTypes)

    Shadows Sub Add(ID As Guid, HiddenButton As HtmlElement, EditButton As HtmlElement, DeleteButton As HtmlElement)

        Dim Buttons As New ItemButtons(ID, HiddenButton, EditButton, DeleteButton)

        AddHandler Buttons.ButtonClicked, AddressOf onButtonClicked

        MyBase.Add(ID, Buttons)

    End Sub

    Shadows Sub Remove(ID As Guid)

        If MyBase.ContainsKey(ID) Then

            RemoveHandler Me(ID).ButtonClicked, AddressOf onButtonClicked

            MyBase.Remove(ID)

        End If

    End Sub

    Private Sub onButtonClicked(ID As Guid, Button As System.Windows.Forms.HtmlElement, ButtonType As ButtonTypes)

        RaiseEvent ButtonClicked(ID, Button, ButtonType)

    End Sub

End Class

RemoveHandler Statement - Visual Basic | Microsoft Learn