Private Sub Text2_KeyPress(KeyAscii As Integer)
    If KeyAscii = 8 Then Exit Sub
    If KeyAscii > 57 Or KeyAscii < 48 Then KeyAscii = 0
End Sub

我是刚学VB6.0的请高人帮我解释一下上面这个代码.
请发到503940359@
谢谢!!!!!!!