private void button7_Click(object sender, EventArgs e)
{
Form24 form = new Form24();
this.Hide();
form.Show();
}
private void button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConnectionString);
con.Open();
SqlCommand cmd = new SqlCommand("insert into StudentResult(StudentId,AssessmentComponentId,RubricMeasurementId,EvaluationDate) values('" + comboBox1.Text.ToString() + "','" + comboBox2.Text.ToString() + "','" + comboBox3.Text.ToString() + "','" + Convert.ToDateTime(dateTimePicker1.Text) + "')", con);
cmd.ExecuteNonQuery();
MessageBox.Show("Added!");
Form24 frm5 = new Form24();
this.Hide();
frm5.Show();
}