protected void DeleteUser(object sender, EventArgs e)
 {
     if (logged)
     {
         int count = dgvInfomations.Rows.Count;
         if (count > 0)
         {
             if (MessageBox.Show("Are you sure?", "Notification",
                                 MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
             {
                 int         id       = Convert.ToInt32(dgvInfomations.SelectedCells[0].OwningRow.Cells[0].Value.ToString());
                 Infomations foundpr1 = mainList.Find((Infomations k) => { return(k.Id == id); });
                 mainList.Remove(foundpr1);
                 updateDgv();
                 xoaTrang();
             }
         }
     }
     else
     {
         MessageBox.Show("You must login again to delete users", "Login Validation",
                         MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
         LoginAgain loginAgain = new LoginAgain();
         loginAgain.ShowDialog();
     }
 }
 protected void EditUser(object sender, EventArgs e)
 {
     if (MessageBox.Show("Are you sure?", "Notification",
                         MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
     {
         int         id       = Convert.ToInt32(dgvInfomations.SelectedCells[0].OwningRow.Cells[0].Value.ToString());
         Infomations foundpr1 = mainList.Find((Infomations k) => { return(k.Id == id); });
         int         index    = mainList.IndexOf(foundpr1);
         mainList[index].Ten        = infomationsControlMain.Ten;
         mainList[index].NgaySinh   = infomationsControlMain.NgaySinh;
         mainList[index].GioiTinh   = infomationsControlMain.GioiTinh;
         mainList[index].NgheNghiep = infomationsControlMain.NgheNghiep;
         mainList[index].DiaChi     = infomationsControlMain.DiaChi;
         updateDgv();
         xoaTrang();
     }
 }
 protected void AddUser(object sender, EventArgs e)
 {
     if (MessageBox.Show("Are you sure?", "Notification",
                         MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
     {
         Infomations newInfo = new Infomations();
         newInfo.Id         = i++;
         newInfo.Ten        = infomationsControlMain.Ten;
         newInfo.NgaySinh   = infomationsControlMain.NgaySinh;
         newInfo.GioiTinh   = infomationsControlMain.GioiTinh;
         newInfo.NgheNghiep = infomationsControlMain.NgheNghiep;
         newInfo.DiaChi     = infomationsControlMain.DiaChi;
         mainList.Add(newInfo);
         updateDgv();
         xoaTrang();
     }
 }