//Sua Doi Thong tin benh nhan cho
        public void SuaDoiBenhNhanCho(BenhNhanCho bnc)
        {
            string sql = string.Format("Update BENHNHANCHO set Ho = N'{0}', Ten = N'{1}', NgaySinh = N'{2}', GioiTinh = N'{3}', DiaChi = N'{4}',"
            + " CMND = '{5}', MaDoiTuong = '{6}', NgheNghiep = N'{7}', SDT = '{8}', YeuCauKham = '{9}', NgayKham = N'{10}', MaPhongKham = '{11}'"
            + " where MaBenhNhan = '{12}'", bnc.Ho, bnc.Ten, bnc.NgaySinh.ToString("MM/dd/yyyy"), bnc.GioiTinh, bnc.DiaChi, bnc.CMND, bnc.MaDoiTuong,
            bnc.NgheNghiep, bnc.SDT, bnc.YeuCauKham, bnc.NgayKham.ToString("MM/dd/yyyy"), bnc.MaPhongKham, bnc.MaBenhNhan);

            conn.ExcuteQuery(sql);
        }
        //Ham Them Benh Nhan Moi vao danh sach benh nhan cho
        public bool ThemBenhNhanCho(BenhNhanCho bnc)
        {
            string sql = string.Format("Insert into BENHNHANCHO(STT, MaBenhNhan,  MaDoiTuong,  MaPhongKham, MaBacSi,  Ho, Ten, GioiTinh, CMND, NgheNghiep, NgaySinh,"
              + "DiaChi, SDT, YeuCauKham, GioKham, NgayKham) values('{0}', '{1}', '{2}', '{3}', '{4}', N'{5}', N'{6}', N'{7}', '{8}', N'{9}', N'{10}', N'{11}', '{12}', N'{13}', '{14}', N'{15}')",
              "0", bnc.MaBenhNhan, bnc.MaDoiTuong, bnc.MaPhongKham, bnc.MaBacSi, bnc.Ho, bnc.Ten, bnc.GioiTinh, bnc.CMND, bnc.NgheNghiep, bnc.NgaySinh.ToString("MM/dd/yyyy"),
              bnc.DiaChi, bnc.SDT, bnc.YeuCauKham, bnc.GioKham.ToString("hh:mm:ss"), bnc.NgayKham.ToString("MM/dd/yyyy"));

            if (connData.ExcuteQuery(sql))
                return true;
            return false;
        }
 //dong thoi lay thong tin benh nhan cho
 private BenhNhanCho LayThongTinBenhNhanCho()
 {
     BenhNhanCho bnc = new BenhNhanCho();
     bnc.MaBenhNhan = txtThemBN_MaBenhNhan.Text;
     bnc.MaBenhAn = txtThemBN_MaBenhAnBN.Text;
     bnc.MaDoiTuong = cboThemBN_MaDoiTuongBN.SelectedValue.ToString();
     bnc.MaPhieuKham = txtThemBN_MaPhieuBN.Text;
     bnc.MaPhongKham = cboThemBN_PhongKham.SelectedValue.ToString();
     bnc.MaBacSi = txtThemBN_MaBacSi.Text;
     bnc.Ho = txtThemBN_HoBN.Text;
     bnc.Ten = txtThemBN_TenBN.Text;
     bnc.GioiTinh = cboThemBN_GioiTinhBN.SelectedValue.ToString();
     bnc.CMND = Convert.ToInt32(txtThemBN_CMNDBN.Text);
     bnc.NgheNghiep = txtThemBN_NgheNghiepBN.Text;
     bnc.NgaySinh = Convert.ToDateTime(dtPickerThemBN_NgaySinhBN.Value.ToString());
     bnc.DiaChi = txtThemBN_DiaChiBN.Text;
     bnc.SDT = Convert.ToInt64(txtThemBN_SDTBN.Text);
     bnc.YeuCauKham = rtxtThemBN_YeuCauKhamBN.Text;
     bnc.NgayKham = Convert.ToDateTime(dtPickerThemBN_NgayKhamBN.Value.ToString());
     bnc.GioKham = Convert.ToDateTime(dtPicker_GioKhamBN.Value.ToString());
     return bnc;
 }
        // them vao danh sach benh nhan cho
        //ham them benh nhan moi vao CSDL
        public bool ThemBenhNhanCho(BenhNhanCho bnc)
        {
            //them thong tin vao table BENHNHAN
            string sql = string.Format("Insert into BENHNHANCHO(STT, MaBenhNhan, MaDoiTuong, Ho, Ten, GioiTinh, CMND, NgheNghiep, NgaySinh,"
            + "DiaChi, SDT, YeuCauKham, MaBenhAn, NgayKham, MaPhongKham) values('{0}', '{1}', '{2}', N'{3}', N'{4}', N'{5}', '{6}', N'{7}', N'{8}', N'{9}', '{10}', N'{11}', '{12}', N'{13}', '{14}' )",
            "0", bnc.MaBenhNhan, bnc.MaDoiTuong, bnc.Ho, bnc.Ten, bnc.GioiTinh, bnc.CMND, bnc.NgheNghiep, bnc.NgaySinh.ToString("MM/dd/yyyy"), bnc.DiaChi, bnc.SDT, bnc.YeuCauKham, bnc.MaBenhAn,
            bnc.NgayKham.ToString("MM/dd/yyyy"), bnc.MaPhongKham);

            if (conn.ExcuteQuery(sql))
            {
                MessageBox.Show("Đã thêm bệnh nhân thành công!", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return true;
            }
            else
                return false;
        }