private void button1_Click(object sender, EventArgs e)
{
this.Hide();
AddStudent s1 = new AddStudent();
s1.Show();
}
private void button4_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=DESKTOP-6FG9FQD;Initial Catalog=StudentDMC;Integrated Security=True");
con.Open();
string query = "INSERT INTO COURSE_DETAILS(COURSE_ID, COURSE_NAME, CRDHRS, SEMESTER, MARKS, FK_REG_NUM)" +
"VALUES(@course_id, @course_name, @crdh, @sem, @marks, @regnum)";
SqlCommand cmd = new SqlCommand(query, con);
cmd.Parameters.AddWithValue("@course_id", idtxt.Text);
cmd.Parameters.AddWithValue("@course_name", coursenametxt.Text);
cmd.Parameters.AddWithValue("@crdh", crdhrstxt.Text);
cmd.Parameters.AddWithValue("@sem", semestertxt.Text);
cmd.Parameters.AddWithValue("@marks", markstxt.Text);
cmd.Parameters.AddWithValue("@regnum", regnumtxt.Text);
cmd.ExecuteNonQuery();
MessageBox.Show("Record added!");
idtxt.Text = "";
coursenametxt.Text = "";
crdhrstxt.Text = "";
semestertxt.Text = "";
regnumtxt.Text = "";
con.Close();
this.Hide();
AddStudent s1 = new AddStudent();
s1.Show();
}