Answer:
Public Class Form1
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim ch As Char
ch = TextBox1.Text
Select Case ch
Case "A", "E", "I", "O", "U"
MessageBox.Show(ch + " is Vowel And UpperCase")
Case "a", "e", "i", "o", "u"
MessageBox.Show(ch + " is Vowel And LowerCase")
Case Else
MessageBox.Show(ch + " is consonant")
End Select
End Sub
End Class
