Age based "Select Case"

Question

So I am trying to code a button that reads the age entered by the user and determines what price they receive. Below is how I have tried doing this with no luck.

 Private Sub btnSelect_Click(sender As Object, e As EventArgs) Handles btnSelect.Click
    Dim txtage As String
    txtage = lblPrice.Text.ToUpper
    Select Case txtage
        Case CStr(0) To CStr(3)
            lblPrice.Text = "0"
        Case CStr(4) To CStr(63)
            lblPrice.Text = "9"

    End Select

End Sub

I have Option Explicit On, Option Strict On, Option Infer Off,

What am I missing or doing wrong here? Please and thank you.

Answer 1

Then get the value from the right place, and use some code protection with Integer.TryParse since your reading from a string.

Private Sub btnSelect_Click(sender As Object, e As EventArgs) Handles btnSelect.Click
  Dim age As Integer
  If Integer.TryParse(txtage.Text, age) Then
    Select Case age
      Case 0 To 3
        lblPrice.Text = "0"
      Case 4 To 63
        lblPrice.Text = "9"
    End Select
  End If
End Sub