// Update
private void button2_Click(object sender, EventArgs e)
{
if (comboBox2.SelectedItem == null)
{
MessageBox.Show("Choose course id");
}
else
{
using (Online_Exame ent = new Online_Exame())
{
int c_id = int.Parse(comboBox2.SelectedItem.ToString());
ent.UpdateTopic(int.Parse(comboBox1.Text), c_id, textBox1.Text);
textBox1.Text = comboBox1.Text = comboBox2.Text = string.Empty;
loadDataGrid(c_id);
}
}
}
