ASCII code for Enter
It's actually 2 ASCII values: Chr(13) + Chr(10)
in other words - vbCrLf - which is Carriage Return/Line Feed
You can substitute ChrW(Keys.Enter) which is a single Unicode character representing the dual ASCII codes for the Enter key.
For example, the following will return the text in the label for the selected key presses:
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Select Case e.KeyChar
Case " "c
Label1.Text = "space"
Case ":"c
Label1.Text = "colon"
Case ChrW(Keys.Enter)
Label1.Text = "Enter"
End Select
e.Handled = True 'stops beep
End Sub