public GUI_InsertStatistic() { InitializeComponent(); this.Load += new EventHandler(GUI_InsertStatistic_Load); busTK = new BUS_ManageSalesStatistic(); this.btnStatistic.Click += new EventHandler(btnStatistic_Click); this.rbDay.CheckedChanged += new EventHandler(rbDay_Click); this.rbMilestoneTime.CheckedChanged += new EventHandler(rbMilestoneTime_Click); this.rbRangeTime.CheckedChanged += new EventHandler(rbRangeTime_Click); dtpDate.Enabled = false; dtpDayEnd.Enabled = false; dtpDayStart.Enabled = false; loadMonthYear(); }