private void updatePrimary_Click(object sender, EventArgs e)
{
PrimaryKey p = new PrimaryKey(con, comboBox1.SelectedItem.ToString(), primary.Trim(), true);
p.Show();
}
private void button6_Click(object sender, EventArgs e)
{
PrimaryKey p = new PrimaryKey(con, comboBox1.SelectedItem.ToString(), primary, false);
p.Show();
}