UI

238         private void button2_Click(object sender, EventArgs e)
239         {
240             if (richTextBox1.Text == "")
241             {
242                 MessageBox.Show("Vui lòng chọn câu hỏi", "Thông báo");
243             }
244             else
245             {
246                 string sCauHoi = richTextBox1.Text;
247                 if (MessageBox.Show("Bạn có muốn xóa câu hỏi" + " " + sCauHoi, "Thông báo", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
248                 {
249                     string sMaCH = textBox5.Text;
250                     sqlcmd = new SqlCommand("delete cauhoi where mach='" + sMaCH + "'", sqlcon);
251                     sqlcmd.ExecuteNonQuery();
252                     sqlcmd = new SqlCommand("delete dapan where mach='" + sMaCH + "'", sqlcon);
253                     sqlcmd.ExecuteNonQuery();
254                     LoadDataToListView();
255                 }
256                 Bandau();
257             }
258         }

35         private void thoátToolStripMenuItem_Click(object sender, EventArgs e)
36         {
37             this.Close();
38         }

40         private void đăngXuấtToolStripMenuItem_Click(object sender, EventArgs e)
41         {
42             frmLogin fMain = new frmLogin();
43             fMain.Show();
44             fMain.Close();
45         }

47         private void thêmCâuHỏiToolStripMenuItem_Click(object sender, EventArgs e)
48         {
49             frmCapNhat fCapNhat = new frmCapNhat();
50             fCapNhat.Show();
51         }

29         private void thoátToolStripMenuItem_Click_1(object sender, EventArgs e)
30         {
31             this.Close();
32         }

34         private void xemĐápÁnToolStripMenuItem_Click(object sender, EventArgs e)
35         {
36             frmReg fReg = new frmReg();
37             fReg.MdiParent = this;
38             fReg.Show();
39         }

51         private void thoátToolStripMenuItem1_Click(object sender, EventArgs e)
52         {
53             if (MessageBox.Show("Bạn có chắc chắn muốn thoát ?", "Thông báo", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
54             {
55                 Application.Exit();
56
57             }
58         }

60         private void thoátToolStripMenuItem2_Click(object sender, EventArgs e)
61         {
62             Application.Exit();
63         }

65         private void đăngNhậpToolStripMenuItem1_Click(object sender, EventArgs e)
66         {
67             frmLogin Log = new frmLogin();
68             Log.ShowDialog();
69         }

71         private void đăngKýToolStripMenuItem_Click(object sender, EventArgs e)
72         {
73             frmReg reg = new frmReg();
74             reg.ShowDialog();
75         }