private void button4_Click(object sender, EventArgs e) { Show_Student_Group ssg = new Show_Student_Group(); this.Hide(); ssg.Show(); }
private void btnCreate_Click(object sender, EventArgs e) { string date = DateTime.Now.ToShortDateString(); string query = "insert into Group1(Created_On) values('" + date + "')"; DatabaseConnection.getInstance().executeQuery(query); string countMaxId = string.Format("select max(Id) from Group1"); var re = DatabaseConnection.getInstance().readData(countMaxId); int count = 0; while (re.Read()) { count = re.GetInt32(0); } int id; if (list.Count() > 4 || list.Count() < 2) { label8.Visible = true; label8.Text = "Student Length should be between 2 and 4"; } else { for (int i = 0; i < list.Count; i++) { id = list[i].Id; string query1 = string.Format("insert into GroupStudent(GroupId,StudentId,Status,AssignmentDate) values('{0}','{1}','{2}','{3}')", count, id, 4, date); DatabaseConnection.getInstance().executeQuery(query1); } dataGridView1.DataSource = null; Show_Student_Group ssg = new Show_Student_Group(); this.Hide(); ssg.Show(); } }