private void StudentHomeTasks_Load(object sender, EventArgs e) { DateIntervalDialog dlg = new DateIntervalDialog(); dlg.FormClosed += (o, s) => { this.IntervalStart = dlg.IntervalStart; this.IntervalEnd = dlg.IntervalEnd; }; dlg.ShowDialog(); StudentInfo info = StudentDAL.GetStudentInfo(this.StudentID); this.lblGrade.Text = info.GradeName; this.lblStudentID.Text = info.StudentID.ToString(); this.lblDateInteval.Text = string.Format("[{0}] - [{1}]", this.IntervalStart.ToShortDateString(), this.IntervalEnd.ToShortDateString()); UpdateHomeTaskDataGridView(); }