Form1 Combo Box Demo Form1% TextBox CountryCmb NowBtn QuitBtn CountryLbl Country Form_Click @ Form_Load DateFormatOpt Value TimeFormat TimeFormatOpt NowBtn_Click TextBox QuitBtn_Click CountryCmb_Change CountryCmb ComboItem Country Form_Load add items into combo box United States United Kingdom Canada NowBtn_Click UNITED STATES mm-dd-yyyy CANADA yyyy-mm-dd UNITED KINGDOM dd-mm-yyyy Date: Time: QuitBtn_Click