private void button2_Click(object sender, EventArgs e)
{
DBAccs db = new DBAccs();
db.OpenConnection();
db.Insert(textBox2.Text, textBox5.Text, textBox3.Text, textBox4.Text, textBox7.Text, textBox6.Text, textBox9.Text, textBox8.Text);
MessageBox.Show("Uspesno je uneto!");
DataSet ds = new DataSet();
db.Adapter().Fill(ds);
dataGridView1.DataSource = ds.Tables[0].DefaultView;
db.CloseConnection();
}