private void Frm_New_Book_Load(object sender, EventArgs e)
{
BL_Frm_New_Book M = new BL_Frm_New_Book();
dataGridView1.DataSource = M.Select();
int i;
for (i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
comboBox1.Items.Add(Convert.ToString(dataGridView1[1, i].Value.ToString()));
}
}
private void button1_Click(object sender, EventArgs e)
{
BL_Frm_New_Book M = new BL_Frm_New_Book();
M.ISBN = textBox1.Text;
M.Title = textBox2.Text;
M.Subject = comboBox1.SelectedIndex + 1;
M.wirter = textBox3.Text;
M.publishers = textBox4.Text;
M.Year_Date = textBox5.Text;
M.NumPage = Convert.ToInt16(textBox6.Text);
M.Price = Convert.ToInt16(textBox7.Text);
M.Add();
textBox1.Focus();
textBox1.Clear();
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
textBox5.Clear();
textBox6.Clear();
textBox7.Clear();
comboBox1.SelectedIndex = -1;
}
