How to remove all created labels on my form - vb.net

Question

I have this code and I want to know how to remove all created labels in my form.
I tried to put lbl.dispose() and ltr.dispose() on a Button but it says that it's not declared or inaccessible.
Dim break As Integer = 99
For i = 0 To break
If jobA > 0 And jobA > time Then
jobA = jobA - time
Dim lbl As Label = New Label
Dim ltr As Label = New Label
lbl.Location = New System.Drawing.Point(x, 280)
lbl.Size = New System.Drawing.Point(20, 20)
lbl.Text = time + spudow(waifuu)
ltr.Location = New System.Drawing.Point(y, 250)
ltr.Size = New System.Drawing.Point(20, 20)
ltr.Text = "A"
Me.Controls.Add(lbl)
Me.Controls.Add(ltr)
ElseIf jobA > 0 And jobA < time Then
Dim lbl As Label = New Label
Dim ltr As Label = New Label
lbl.Location = New System.Drawing.Point(x, 280)
lbl.Size = New System.Drawing.Point(20, 20)
lbl.Text = jobA + spudow(waifuu)
ltr.Location = New System.Drawing.Point(y, 250)
ltr.Size = New System.Drawing.Point(20, 20)
ltr.Text = "A"
Me.Controls.Add(lbl)
Me.Controls.Add(ltr)
ElseIf jobA = time Then
Dim lbl As Label = New Label
Dim ltr As Label = New Label
lbl.Location = New System.Drawing.Point(x, 280)
lbl.Size = New System.Drawing.Point(20, 20)
lbl.Text = jobA + spudow(waifuu)
ltr.Location = New System.Drawing.Point(y, 250)
ltr.Size = New System.Drawing.Point(20, 20)
ltr.Text = "A"
Me.Controls.Add(lbl)
Me.Controls.Add(ltr)
End If
Me.Refresh()

Answer 1

I like Zaggler's idea of using a List(Of Label), but I'll post another approach using the .Tag property of the Labels instead. This will work well enough if all the Labels will only be added to the Form itself. If you're going to spread the Labels across multiple containers then use the List(Of Label) approach instead as it will be easier. Additionally, you can get rid of a lot of redundant code by restructuring like this (I assume there is more un-shown code that is somehow changing the "x" and "y" values!):
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim break As Integer = 99
For i = 0 To break
Dim lbl As Label = New Label
Dim ltr As Label = New Label
lbl.Tag = "dynamic"
ltr.Tag = "dynamic"
lbl.Location = New System.Drawing.Point(x, 280)
lbl.Size = New System.Drawing.Point(20, 20)
lbl.Text = ""
ltr.Location = New System.Drawing.Point(y, 250)
ltr.Size = New System.Drawing.Point(20, 20)
ltr.Text = "A"
If jobA > 0 Then
If jobA > time Then
jobA = jobA - time
lbl.Text = time + spudow(waifuu)
ElseIf jobA < TimeOfDay Then
lbl.Text = jobA + spudow(waifuu)
End If
ElseIf jobA = time Then
lbl.Text = jobA + spudow(waifuu)
End If
If lbl.Text <> "" Then
Me.Controls.Add(lbl)
Me.Controls.Add(ltr)
End If
Next i
End Sub
Then, when you want to remove the dynamic Labels, you can use code like this:
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim labels = Me.Controls.OfType(Of Label).Where(Function(x) x.Tag = "dynamic").ToList
For Each lbl As Label In labels
lbl.Dispose()
Next
End Sub

Answer 2

Sub RemoveAllLabels()
Dim Labels As New List(Of Label)
Dim Stack As New Stack(Of Control)
Stack.Push(Me)
While Stack.Count > 0
Dim Ctrl As Control = Stack.Pop()
Labels.Add(TryCast(Ctrl, Label))
For Each C As Control In Ctrl.Controls
Stack.Push(C)
Next
End While
For Each L As Label In Labels
If Not IsNothing(L) Then L.Dispose()
Next
End Sub