vb.net - How do we write the pseudocode taking this part of code as an example?

Question

Private Sub txtpostcode_KeyUp(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles txtpostcode.KeyUp
    
    If (Not Char.IsNumber(ChrW(e.KeyCode))) Then
        MsgBox("Please re-enter your postcode", vbExclamation)

        txtpostcode.Text = ""
    End If
End Sub

question from:https://stackoverflow.com/questions/65926544/how-do-we-write-the-pseudocode-taking-this-part-of-code-as-an-example

Answer 1

Guess psedo code is really a little open to personal style. Me, I would go something like

If keypress is letter
  Show Messagebox
  Clear postcode
end if