So









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Below are practical examples compiled from projects for learning and reference purposes

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File name: ClassBLL.cs Copy
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         }
File name: ClassBLL.cs Copy
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         }
File name: ClassBLL.cs Copy
213         public string TinhDiemTB(string MaSV, string MaHK)
214         {
215             SqlConnection con = da.GetConnect();
216             con.Open();
217             //view tc
218             string sql1 = " select 'sotinchi'=sum(SoTC) " +
219                                " from KetQua kq,HocPhan hp,NhomHocPhan nhp,KeHoachGiangDay khgd " +
220                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khgd.MaKHGD=nhp.MaKHGD and MaSV='"+MaSV+"' and MaHK='"+MaHK+"' " +
221                                " group by MaSV ";
222             SqlCommand cmd1 = new SqlCommand(sql1, con);
223             string tc = cmd1.ExecuteScalar().ToString();
224             // view diem10
225             string sql2 = " select 'cuoiky'=sum(DiemTk10*SoTC) " +
226                                " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
227                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD and MaSV='"+MaSV+"' and MaHK='"+MaHK+"' " +
228                                " group by MaSV ";
229             SqlCommand cmd2 = new SqlCommand(sql2, con);
230             string diem10 = cmd2.ExecuteScalar().ToString();
231             //view diem4
232             string sql3 = " select 'cuoiky'=sum(DiemTk4*SoTC) " +
233                                " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
234                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD and MaSV='"+MaSV+"' and MaHK='"+MaHK+"' " +
235                                " group by MaSV ";
236             SqlCommand cmd3 = new SqlCommand(sql3, con);
237             string diem4 = cmd3.ExecuteScalar().ToString();
238
239
240             string ketqua="";
241             ketqua = Convert.ToDouble(diem10) / Convert.ToDouble(tc) + "," + Convert.ToDouble(diem4) / Convert.ToDouble(tc) ;
242             return ketqua;
243         }
File name: ClassBLL.cs Copy
244         public string TinhDiemTB(string MaSV)
245         {
246             SqlConnection con = da.GetConnect();
247             con.Open();
248             //view tc
249             string sql1 = " select 'sotinchi'=sum(SoTC) " +
250                                " from KetQua kq,HocPhan hp,NhomHocPhan nhp,KeHoachGiangDay khgd " +
251                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khgd.MaKHGD=nhp.MaKHGD and MaSV='" + MaSV + "'" +
252                                " group by MaSV ";
253             SqlCommand cmd1 = new SqlCommand(sql1, con);
254             string tc = cmd1.ExecuteScalar().ToString();
255             // view diem10
256             string sql2 = " select 'cuoiky'=sum(DiemTk10*SoTC) " +
257                                " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
258                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD and MaSV='" + MaSV + "'" +
259                                " group by MaSV ";
260             SqlCommand cmd2 = new SqlCommand(sql2, con);
261             string diem10 = cmd2.ExecuteScalar().ToString();
262             //view diem4
263             string sql3 = " select 'cuoiky'=sum(DiemTk4*SoTC) " +
264                                " from KetQua kq,NhomHocPhan nhp,HocPhan hp,KeHoachGiangDay khdt " +
265                                " where kq.MaNhomHP=nhp.MaNhomHP and nhp.MaHP=hp.MaHP and khdt.MaKHGD=nhp.MaKHGD and MaSV='" + MaSV + "'" +
266                                " group by MaSV ";
267             SqlCommand cmd3 = new SqlCommand(sql3, con);
268             string diem4 = cmd3.ExecuteScalar().ToString();
269
270
271             string ketqua = "";
272             ketqua = Convert.ToDouble(diem10) / Convert.ToDouble(tc) + "," + Convert.ToDouble(diem4) / Convert.ToDouble(tc);
273             return ketqua;
274         }
File name: crBaoCao.cs Copy
24         public override string ResourceName {
25             get {
26                 return "crBaoCao.rpt";
27             }
28             set {
29                 // Do nothing
30             }
31         }
File name: crBaoCao.cs Copy
42         public override string FullResourceName {
43             get {
44                 return "QuanLyDiem.crBaoCao.rpt";
45             }
46             set {
47                 // Do nothing
48             }
49         }
File name: FormBaoCao.cs Copy
27         public void loadCmb()
28         {
29             SqlConnection con = dal.GetConnect();
30             con.Open();
31             SqlCommand cm = new SqlCommand("Select *from Lop", con);
32             SqlDataAdapter da = new SqlDataAdapter(cm);
33             DataTable dt = new DataTable();
34             da.Fill(dt);
35             this.cmbMaLop.DisplayMember = "MaLop";
36             this.cmbMaLop.ValueMember = "MaLop";
37             this.cmbMaLop.DataSource = dt;
38         }
File name: FormBaoCao.cs Copy
40         private void btnLoc_Click(object sender, EventArgs e)
41         {
42             SqlConnection con = dal.GetConnect();
43             con.Open();
44             string sql = "select *from SinhVien where MaLop=@MaLop";
45             SqlDataAdapter da = new SqlDataAdapter(sql, con);
46             da.SelectCommand.Parameters.AddWithValue("@MaLop", cmbMaLop.SelectedValue.ToString());
47             DataTable dt = new DataTable();
48             da.Fill(dt);
49             crBaoCao cr = new crBaoCao();
50             ConnectionInfo crConnectionInfo = new ConnectionInfo();
51             crConnectionInfo.ServerName = "Ty-PC";
52             crConnectionInfo.DatabaseName = "CNPM_1";
53             crConnectionInfo.UserID = "sa";
54             crConnectionInfo.Password = "04091990";
55             TableLogOnInfos crTableLogonInfos = new TableLogOnInfos();
56             foreach (CrystalDecisions.CrystalReports.Engine.Table table in cr.Database.Tables)
57             {
58                 TableLogOnInfo crTableLogonInfo = new TableLogOnInfo();
59                 crTableLogonInfo.TableName = table.Name;
60                 crTableLogonInfo.ConnectionInfo = crConnectionInfo;
61                 crTableLogonInfos.Add(crTableLogonInfo);
62                 table.ApplyLogOnInfo(crTableLogonInfo);
63
64             }
65             crvHocKyHocPhan.LogOnInfo = crTableLogonInfos;
66             cr.SetDataSource(dt);
67             ParameterValues a = new ParameterValues();
68             ParameterDiscreteValue b = new ParameterDiscreteValue();
69             b.Value = cmbMaLop.SelectedValue.ToString();
70             a.Add(b);
71             cr.DataDefinition.ParameterFields["txtMaLop"].ApplyCurrentValues(a);
72             crvHocKyHocPhan.ReportSource = cr;
73             crvHocKyHocPhan.Show();
74         }
File name: FormGiangVien.cs Copy
20         private void FormGiangVien_Load(object sender, EventArgs e)
21         {
22             dgvGiangVien.DataSource = business.ShowData("GiangVien");
23         }
File name: FormHeDaoTao.cs Copy
20         private void FormHeDaoTao_Load(object sender, EventArgs e)
21         {
22             dgvHeDaoTao.DataSource = business.ShowData("HeDaoTao");
23         }

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