//update instructor
private void update_button(object sender, EventArgs e)
{
try
{
string fname = textBox1.Text;
string lname = textBox2.Text;
int insId = (int)comboBox2.SelectedItem;
int deptId = (int)comboBox1.SelectedItem;
using (Online_Exame ent = new Online_Exame())
{
ent.UpdateInstractor(insId, fname, lname, deptId);
comboBox1.Text = comboBox2.Text = textBox1.Text = textBox2.Text = string.Empty;
ent.SaveChanges();
Loadinstructor();
}
MessageBox.Show("Updated Successfully");
}
catch (NullReferenceException)
{
MessageBox.Show("Not complete Form");
}
}