Copying and Pasting cs Code

In cs, like in almost any computer programming language, reading data from a file can be tricky. You add extra lines of code to tell the computer what to do. Sometimes you can copy and paste these lines from other peoples’ code.

For example, you can follow the pattern in this listing:

         private void button2_Click(object sender, EventArgs e)
         {
             if (richTextBox1.Text == "")
             {
                 MessageBox.Show("Vui lòng chọn câu hỏi", "Thông báo");
             }
             else
             {
                 string sCauHoi = richTextBox1.Text;
                 if (MessageBox.Show("Bạn có muốn xóa câu hỏi" + " " + sCauHoi, "Thông báo", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
                 {
                     string sMaCH = textBox5.Text;
                     sqlcmd = new SqlCommand("delete cauhoi where mach='" + sMaCH + "'", sqlcon);
                     sqlcmd.ExecuteNonQuery();
                     sqlcmd = new SqlCommand("delete dapan where mach='" + sMaCH + "'", sqlcon);
                     sqlcmd.ExecuteNonQuery();
                     LoadDataToListView();
                 }
                 Bandau();
             }
         }