public void loadComboBoxNhaXuatBan()
{
DBService db = new DBService();
db.openconn();
DataTable dt = db.getDataTable("select * from NhomNhaXuatBan");
cbNhaXuatBan.DataSource = dt;
cbNhaXuatBan.DisplayMember = "NXB_id";
cbNhaXuatBan.ValueMember = "NXB_name";
if (txtNhaXB.Text == "System.Data.DataRowView")
{
txtNhaXB.Text = "";
}
db.closeconn();
}
public void loadComboBoxTheLoai()
{
DBService db = new DBService();
db.openconn();
DataTable dt = db.getDataTable("select * from NhomTheLoai");
cbTheLoai.DataSource = dt;
cbTheLoai.DisplayMember = "NTL_id";
cbTheLoai.ValueMember = "NTL_name";
if (txtTheLoai.Text == "System.Data.DataRowView")
{
txtTheLoai.Text = "";
}
db.closeconn();
}
