private void button2_Click(object sender, EventArgs e)
{
localhost.Service1 service = new localhost.Service1();
bool isValidsub;
bool isValidsubject;
service.isTeacherValidSubject(comboBox1.Text, out isValidsubject, out isValidsub);
BindingSource source = new BindingSource();
if (isValidsubject)
{
source.DataSource = service.TeacherViewReport(comboBox1.Text);
service.TeacherViewReport(comboBox1.Text);
dataGridView1.DataSource = source;
}
else
{
MessageBox.Show("Invalid Subject");
}
}