private void HideOKBtn()
{
Color highlightColor = Color.Red;
bool hide = !HasValidData();
if (btnOK.Enabled == hide)
{
btnOK.Enabled = !hide;
// msgAlreadyUsed.Visible = hide;
}
UpdateControlColor(lblBeginMarker, isValidBeginMarker, highlightColor);
UpdateControlColor(lblEndMarker, HasValidEndMarker(), highlightColor);
}
private void UpdateControlColor(Control ctrl, bool valid, Color errColor)