New form "is never disposed" message - vb.net

Question

I've recently moved over to Visual Studio 2019 V16.2 and it's now showing me a new "message" whenever I move between forms in my Windows Forms App.
IDE0067 Disposable object created by 'New FindFile' is never disposed
I've always moved to the "next" form in my project with code snippets like:
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
Dim frmFindFile As New FindFile
frmFindFile.Show()
Me.Close()
End Sub
What am I doing wrong? Should I be disposing of the form variable once the new one is showing? The below gets rid of the warning, but my second form never shows up!
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
Dim frmFindFile As New FindFile
frmFindFile.Show()
Me.Close()
frmFindFile.Dispose()
End Sub

Answer 1

VB.NET has default instances of forms, so if you just use FindFile.Show() it will not give a warning.
For more information, please see the answers at Why is there a default instance of every form in VB.Net but not in C#?

Answer 2

I haven't seen the proper answer to this question yet, but there is one.
Original code as listed above is:
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
Dim frmFindFile As New FindFile
frmFindFile.Show()
Me.Close()
End Sub
Yet, the proper way to do this is:
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
Using frmFindFile As FindFile = New FindFile()
frmFindFile.Show()
End Using
Me.Close()
End Sub
This will automatically dispose of anything within the Using structure that requires disposal.
Pretty much anything that can be instantiated using the Dim/As class structure can be placed within a Using structure.
Another example would be using streamreader/writer. Instantiate it with the Using, then instead of using instance.Close(), just use End Using to close it out and dispose of it.