Log









How do I use Log
Below are practical examples compiled from projects for learning and reference purposes

Featured Snippets


File name: ClassBLL.cs Copy
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         }
File name: crBaoCao.cs Copy
119         public virtual bool ShareDBLogonInfo {
120             get {
121                 return false;
122             }
123             set {
124                 //
125             }
126         }
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: FormDangNhap.cs Copy
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         }
File name: FormGiangVien.cs Copy
57         private void btnXoa_Click(object sender, EventArgs e)
58         {
59             DialogResult result;
60             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?","Hệ Thống", MessageBoxButtons.YesNo);
61             if (result == DialogResult.Yes)
62             {
63                 string sql = "MaGV='" + txtMaGV.Text + "'";
64                 business.Delete("GiangVien", sql);
65                 FormGiangVien_Load(sender, e);
66             }
67         }
File name: FormHeDaoTao.cs Copy
54         private void btnXoa_Click(object sender, EventArgs e)
55         {
56             DialogResult result;
57             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?","Hệ Thống", MessageBoxButtons.YesNo);
58             if (result == DialogResult.Yes)
59             {
60                 string sql = "MaHeDT = '" + txtMaHeDT.Text + "'";
61                 business.Delete("HeDaoTao", sql);
62                 FormHeDaoTao_Load(sender, e);
63             }
64         }
File name: FormHocKy.cs Copy
40         private void btnXoa_Click(object sender, EventArgs e)
41         {
42             DialogResult result;
43             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?","Hệ Thống", MessageBoxButtons.YesNo);
44             if (result == DialogResult.Yes)
45             {
46                 string sql = "MaHK='" + txtMaHocKy.Text + "'";
47                 business.Delete("HocKy", sql);
48                 FormHocKy_Load(sender, e);
49             }
50         }
File name: FormHocPhan.cs Copy
41         private void btnXoa_Click(object sender, EventArgs e)
42         {
43             DialogResult result;
44             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?","Hệ Thống", MessageBoxButtons.YesNo);
45             if (result == DialogResult.Yes)
46             {
47                 string sql = "MaHP='" + txtMaHP.Text + "'";
48                 business.Delete("HocPhan", sql);
49                 FormHocPhan_Load(sender, e);
50             }
51         }
File name: FormKHGD.cs Copy
51         private void btnXoa_Click(object sender, EventArgs e)
52         {
53             DialogResult result;
54             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?", "Hệ Thống", MessageBoxButtons.YesNo);
55             if (result == DialogResult.Yes)
56             {
57                 string sql = "MaKHGD='" + txtMaKHGD.Text + "'";
58                 business.Delete("KeHoachGiangDay", sql);
59                 FormKHGD_Load(sender, e);
60             }
61         }
File name: FormKhoiLop.cs Copy
60         private void btnXoa_Click(object sender, EventArgs e)
61         {
62             DialogResult result;
63             result = MessageBox.Show("Bạn có chắc chắn muốn xóa không ?","Hệ Thống", MessageBoxButtons.YesNo);
64             if (result == DialogResult.Yes)
65             {
66                 string sql = "MaKhoiLop='" + txtMaKhoiLop.Text + "'";
67                 business.Delete("KhoiLop", sql);
68                 FormKhoiLop_Load(sender, e);
69             }
70         }

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