Else
How do I use Else
Below are practical examples compiled from projects for learning and reference purposes
Featured Snippets
Line | Code | Ex.. |
---|---|---|
203 | else | 1 |
40 | else | 2 |
50 | else | 3 |
47 | else | 4 |
62 | else | 5 |
35 | else | 6 |
44 | else | 7 |
53 | else | 8 |
73 | else | 9 |
51 | else | 10 |
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: FormDangNhap.cs
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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
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40 private void btnThem_Click(object sender, EventArgs e)
41 {
42 if (txtMaGV.Text!="")
43 {
44 if(business.Proc_Insert("Insert_GiangVien",txtMaGV.Text))
45 {
46 string sql = "'"+txtMaGV.Text+"','"+txtTenGV.Text+"','"+dtpNamSinh.Text+"','"+txtDiaChi.Text+"'";
47 business.Insert("GiangVien",sql);
48 FormGiangVien_Load(sender,e);
49 }
50 else
51 {
52 MessageBox.Show("Mã GV đã tồn tại");
53 }
54 }
55 }
File name: FormHeDaoTao.cs
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37 private void btnThem_Click(object sender, EventArgs e)
38 {
39 if(txtMaHeDT.Text!="")
40 {
41 if (business.Proc_Insert("Insert_HeDaoTao", txtMaHeDT.Text))
42 {
43 string sql = "'" + txtMaHeDT.Text + "','" + txtTenHeDT.Text + "'";
44 business.Insert("HeDaoTao", sql);
45 FormHeDaoTao_Load(sender, e);
46 }
47 else
48 {
49 MessageBox.Show("Mã Hệ Đào Tạo đã tồn tại");
50 }
51 }
52 }
File name: FormHocKy.cs
Copy
52 private void btnThem_Click(object sender, EventArgs e)
53 {
54 if (txtMaHocKy.Text!="")
55 {
56 if (business.Proc_Insert("Insert_HocKy", txtMaHocKy.Text))
57 {
58 string sql = "'" + txtMaHocKy.Text + "','" + txtTenHocKy.Text + "','" + txtNamHoc.Text + "','" + dtpBatDau.Text + "','" + dtpKetThuc.Text + "'";
59 business.Insert("HocKy", sql);
60 FormHocKy_Load(sender, e);
61 }
62 else
63 {
64 MessageBox.Show("Mã Học Kỳ đã tồn tại");
65 }
66 }
67 }
File name: FormHocPhan.cs
Copy
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 }
File name: FormKHGD.cs
Copy
34 private void btnThem_Click(object sender, EventArgs e)
35 {
36 if (txtMaKHGD.Text != "")
37 {
38 if (business.Proc_Insert("Insert_KHGD",txtMaKHGD.Text))
39 {
40 string sql = "'"+txtMaKHGD.Text+"','"+cmbMahocKy.SelectedValue.ToString()+"','"+cmbMaKhoiLop.SelectedValue.ToString()+"'";
41 business.Insert("KeHoachGiangDay",sql);
42 FormKHGD_Load(sender, e);
43 }
44 else
45 {
46 MessageBox.Show("Mã KHGD đã tồn tại rồi");
47 }
48 }
49 }
File name: FormKhoiLop.cs
Copy
43 private void btnThem_Click(object sender, EventArgs e)
44 {
45 if(txtMaKhoiLop.Text!="")
46 {
47 if(business.Proc_Insert("Insert_KhoiLop",txtMaKhoiLop.Text))
48 {
49 string sql = "'" + txtMaKhoiLop.Text + "','" + txtTenKhoiLop.Text + "','" + cmbMaHeDT.SelectedValue.ToString() + "','" + cmbMaHeDT.SelectedValue.ToString() + "'";
50 business.Insert("KhoiLop", sql);
51 FormKhoiLop_Load(sender, e);
52 }
53 else
54 {
55 MessageBox.Show("Mã Khối Lớp đã tồn tại rồi");
56 }
57 }
58 }
File name: FormLop.cs
Copy
63 private void btnThem_Click(object sender, EventArgs e)
64 {
65 if (txtMaLop.Text != "")
66 {
67 if (business.Proc_Insert("Insert_Lop", txtMaLop.Text))
68 {
69 string sql = "'"+txtMaLop.Text+"','"+txtTenLop.Text+"','"+cmbMaKhoiLop.SelectedValue.ToString()+"','"+cmbMaGV.SelectedValue.ToString()+"'";
70 business.Insert("Lop",sql);
71 FormLop_Load(sender,e);
72 }
73 else
74 {
75 MessageBox.Show("Mã Lớp đã tồn tại");
76 }
77 }
78 }
File name: FormNhomHocPhan.cs
Copy
41 private void btnThem_Click(object sender, EventArgs e)
42 {
43 if (txtMaNhomHP.Text != "")
44 {
45 if (business.Proc_Insert("Insert_NhomHocPhan", txtMaNhomHP.Text))
46 {
47 string sql = "'"+txtMaNhomHP.Text+"','"+txtTenNhomHP.Text+"','"+cmbMaHP.SelectedValue.ToString()+"','"+cmbMaKHGD.SelectedValue.ToString()+"','"+cmbMaGV.SelectedValue.ToString()+"'";
48 business.Insert("NhomHocPhan", sql);
49 FormNhomHocPhan_Load(sender, e);
50 }
51 else
52 {
53 MessageBox.Show("Mã SV đã tồn tại");
54 }
55 }
56 }
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