Private Sub TextBox4_Change()
If IsNumeric(TextBox4.Text) And IsNumeric(TextBox9.Text) Then
TextBox7.Text = CStr(CDbl(TextBox4.Text) + CDbl(TextBox9.Text))
Else
TextBox7.Text = ""
End If
End Sub
Private Sub TextBox9_Change()
If IsNumeric(TextBox4.Text) And IsNumeric(TextBox9.Text) Then
TextBox7.Text = CStr(CDbl(TextBox4.Text) + CDbl(TextBox9.Text))
Else
TextBox7.Text = ""
End If
End Sub