Int

15         public void ChuanBi3Table(string MaHK)
16         {
17             //Table 1
18             string sql1 = " select MaSV,'sotinchi'=sum(SoTC) " +
19                        " from KetQua kq,HocPhan hp,NhomHocPhan nhp,KeHoachGiangDay khgd " +
20                        " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khgd.MaKHGD=nhp.MaKHGD and MaHK='" + MaHK + "' " +
21                        " group by MaSV ";
22             DataTable dt1 = da.GetTable(sql1);
23             for (int i = 0; i < dt1.Rows.Count; i++)
24             {
25                 string sql_1 = "Insert into Loptc values('" + dt1.Rows[i][0] + "'," + dt1.Rows[i][1] + ")";
26                 da.ExcuteNonQuery(sql_1);
27             }
28             //Table 2
29             string sql2 = "select MaSV,'cuoiky'=sum(DiemTk10*SoTC) " +
30                            " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
31                            " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD and MaHK='" + MaHK + "' " +
32                            " group by MaSV ";
33             DataTable dt2 = da.GetTable(sql2);
34             for (int i = 0; i < dt2.Rows.Count; i++)
35             {
36                 string sql_2 = "Insert into Lopdiem10 values('" + dt2.Rows[i][0] + "'," + dt2.Rows[i][1] + ")";
37                 da.ExcuteNonQuery(sql_2);
38             }
39             //Table 3
40             string sql3 = " select Lopdiem10.MaSV,'TrungBinhCuoiKyHe10'=cuoiky/sotinchi " +
41                            " from Lopdiem10 left join Loptc on Loptc.MaSV=Lopdiem10.MaSV";
42             DataTable dt3 = da.GetTable(sql3);
43             for (int i = 0; i < dt3.Rows.Count; i++)
44             {
45                 string sql_3 = "Insert into DTB values('" + dt3.Rows[i][0] + "'," + dt3.Rows[i][1] + ")";
46                 da.ExcuteNonQuery(sql_3);
47             }
48         }

49         public void ChuanBi3Table()
50         {
51             //Table 1
52             string sql1 = " select MaSV,'sotinchi'=sum(SoTC) " +
53                        " from KetQua kq,HocPhan hp,NhomHocPhan nhp,KeHoachGiangDay khgd " +
54                        " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khgd.MaKHGD=nhp.MaKHGD " +
55                        " group by MaSV ";
56             DataTable dt1 = da.GetTable(sql1);
57             for (int i = 0; i < dt1.Rows.Count; i++)
58             {
59                 string sql_1 = "Insert into Loptc values('" + dt1.Rows[i][0] + "'," + dt1.Rows[i][1] + ")";
60                 da.ExcuteNonQuery(sql_1);
61             }
62             //Table 2
63             string sql2 = "select MaSV,'cuoiky'=sum(DiemTk10*SoTC) " +
64                            " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
65                            " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD " +
66                            " group by MaSV ";
67             DataTable dt2 = da.GetTable(sql2);
68             for (int i = 0; i < dt2.Rows.Count; i++)
69             {
70                 string sql_2 = "Insert into Lopdiem10 values('" + dt2.Rows[i][0] + "'," + dt2.Rows[i][1] + ")";
71                 da.ExcuteNonQuery(sql_2);
72             }
73             //Table 3
74             string sql3 = " select Lopdiem10.MaSV,'TrungBinhCuoiKyHe10'=cuoiky/sotinchi " +
75                            " from Lopdiem10 left join Loptc on Loptc.MaSV=Lopdiem10.MaSV";
76             DataTable dt3 = da.GetTable(sql3);
77             for (int i = 0; i < dt3.Rows.Count; i++)
78             {
79                 string sql_3 = "Insert into DTB values('" + dt3.Rows[i][0] + "'," + dt3.Rows[i][1] + ")";
80                 da.ExcuteNonQuery(sql_3);
81             }
82         }

96         public DataTable ThongKeLop(string MaHK,string MaLop,int loai)
97         {
98             SqlConnection con = da.GetConnect();
99             ChuanBi3Table(MaHK);
100             //Truy van cuoi cung
101             string sql4;
102             switch (loai)
103             {
104                 case 0:
105                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
106                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
107                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 >= 9";
108                     break;
109                 case 1:
110                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
111                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
112                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 >=8 and TrungBinhCuoiKyHe10 < 9";
113                     break;
114                 case 2:
115                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
116                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
117                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 >=6.5 and TrungBinhCuoiKyHe10 < 8";
118                     break;
119                 case 3:
120                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
121                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
122                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 >=5 and TrungBinhCuoiKyHe10 < 6.5";
123                     break;
124                 case 4:
125                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
126                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
127                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 >=3.5 and TrungBinhCuoiKyHe10 < 5";
128                     break;
129                 default:
130                     sql4 = "select sv.MaSV,TenSV,TrungBinhCuoiKyHe10 " +
131                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV " +
132                            " where MaLop='" + MaLop + "' and TrungBinhCuoiKyHe10 < 3.5";
133                     break;
134             }
135             DataTable dt4 = da.GetTable(sql4);
136             da.ExcuteNonQuery("delete from Loptc where MaSV in ( select MaSV from Loptc )");
137             da.ExcuteNonQuery("delete from Lopdiem10 where MaSV in ( select MaSV from Lopdiem10 )");
138             da.ExcuteNonQuery("delete from DTB where MaSV in ( select MaSV from DTB )");
139             return dt4;
140         }

141         public DataTable ThongKeKhoiLop(string MaHK, string MaKhoiLop, int loai)
142         {
143             SqlConnection con = da.GetConnect();
144             ChuanBi3Table(MaHK);
145             string sql4;
146             switch (loai)
147             {
148                 case 0:
149                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
150                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
151                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
152                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 >=9 ";
153                     break;
154                 case 1:
155                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
156                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
157                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
158                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 >=8 and TrungBinhCuoiKyHe10 < 9";
159                     break;
160                 case 2:
161                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
162                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
163                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
164                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 >=6.5 and TrungBinhCuoiKyHe10 < 8";
165                     break;
166                 case 3:
167                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
168                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
169                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
170                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 >=5 and TrungBinhCuoiKyHe10 < 6.5";
171                     break;
172                 case 4:
173                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
174                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
175                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
176                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 >=3.5 and TrungBinhCuoiKyHe10 < 5";
177                     break;
178                 default:
179                     sql4 = "select sv.MaSV,TenSV,sv.MaLop,TrungBinhCuoiKyHe10 " +
180                            " from DTB left join SinhVien sv on DTB.MaSV=sv.MaSV,KhoiLop kl,Lop l " +
181                            " where sv.MaLop=l.MaLop and l.MaKhoiLop=kl.MaKhoiLop " +
182                            " and kl.MaKhoiLop='" + MaKhoiLop + "' and TrungBinhCuoiKyHe10 < 3.5";
183                     break;
184             }
185             DataTable dt4 = da.GetTable(sql4);
186             da.ExcuteNonQuery("delete from Loptc where MaSV in ( select MaSV from Loptc )");
187             da.ExcuteNonQuery("delete from Lopdiem10 where MaSV in ( select MaSV from Lopdiem10 )");
188             da.ExcuteNonQuery("delete from DTB where MaSV in ( select MaSV from DTB )");
189             return dt4;
190         }

191         public int CheckLogin(string name, string pass)
192         {
193             SqlConnection con = da.GetConnect();
194             SqlCommand cmd = new SqlCommand("select *from Users Where Username='"+name+"' and Password='"+pass+"'",con);
195             con.Open();
196             SqlDataReader dr = cmd.ExecuteReader();
197             if (dr.Read())
198             {
199                 if (dr[2].ToString() == "admin")
200                 {
201                     return 1;
202                 }
203                 else
204                 {
205                     return 2;
206                 }
207             }
208             else
209             {
210                 return -1;
211             }
212         }

302         public void Insert(string table,string sql)
303         {
304             sql = "insert into "+table+" values("+sql+")";
305             da.ExcuteNonQuery(sql);
306         }

30         private void btnDangNhap_Click(object sender, EventArgs e)
31         {
32             int quyen=business.CheckLogin(txtTenDangNhap.Text, txtMatKhau.Text);
33             if (quyen != -1)
34             {
35                 Form9.quyen = quyen;
36                 Form9 f = (Form9)this.MdiParent;
37                 f.PhanQuyenMenu();
38                 this.Close();
39             }
40             else
41             {
42                 MessageBox.Show("Sai Tên Đăng Nhập Hoặc Mật Khẩu !!");
43             }
44         }

25         private void btnThem_Click(object sender, EventArgs e)
26         {
27             if (txtMaHP.Text != "")
28             {
29                 if (business.Proc_Insert("Insert_HocPhan", txtMaHP.Text))
30                 {
31                     string sql = "'" + txtMaHP.Text + "','" + txtTenHP.Text + "'," + Convert.ToInt32(txtSoTC.Text) + "," + Convert.ToInt32(txtSoTietTH.Text) + "," + Convert.ToInt32(txtSoTietLT.Text) + "," + Convert.ToInt32(txtPhanTramDQT.Text) + "," + Convert.ToInt32(txtPhanTramDT.Text) + "";
32                     business.Insert("HocPhan",sql);
33                     FormHocPhan_Load(sender,e);
34                 }
35                 else
36                 {
37                     MessageBox.Show("Mã Học Phần đã tồn tại");
38                 }
39             }
40         }

53         private void btnSua_Click(object sender, EventArgs e)
54         {
55             string sql = "TenHP='" + txtTenHP.Text + "',SoTC=" + Convert.ToInt32(txtSoTC.Text) + ",SoTietTH=" + Convert.ToInt32(txtSoTietTH.Text) + ",SoTietLT=" + Convert.ToInt32(txtSoTietLT.Text) + ",PhanTramDQT=" + Convert.ToInt32(txtPhanTramDQT.Text) + ",PhanTramDT=" + Convert.ToInt32(txtPhanTramDT.Text) + " where MaHP='"+txtMaHP.Text+"'";
56             business.Update("HocPhan", sql);
57             FormHocPhan_Load(sender, e);
58         }

69         private void btnLoc_Click(object sender, EventArgs e)
70         {
71
72             if (cmbThongKeTheo.SelectedIndex != -1)
73             {
74                 if (cmbThongKeTheo.SelectedIndex == 0)
75                 {
76                     if (Convert.ToInt32(cmbMa.SelectedIndex) != -1)
77                     {
78                         dgvThongKe.DataSource= business.ThongKeLop(cmbMaHK.SelectedValue.ToString(),cmbMa.SelectedValue.ToString(),Convert.ToInt32(cmbXepLoai.SelectedIndex));
79                     }
80                 }
81                 else
82                 {
83                     if (Convert.ToInt32(cmbMa.SelectedIndex) != -1)
84                     {
85                         dgvThongKe.DataSource = business.ThongKeKhoiLop(cmbMaHK.SelectedValue.ToString(), cmbMa.SelectedValue.ToString(), Convert.ToInt32(cmbXepLoai.SelectedIndex));
86                     }
87                 }
88             }
89         }