public static int LayPhieuDangKy()
{
DataService ds = new DataService();
object obj = ds.ExecuteScalar(new System.Data.SqlClient.SqlCommand("select PhieuDangKy from THAM_SO"));
return Convert.ToInt32(obj);
}
public static int LayPhieuNhan()
{
DataService ds = new DataService();
object obj = ds.ExecuteScalar(new SqlCommand("select PhieuNhan from THAM_SO"));
return Convert.ToInt32(obj);
}
public static long LayHoaDon()
{
DataService ds = new DataService();
object obj = ds.ExecuteScalar(new SqlCommand("select HoaDon from THAM_SO"));
return Convert.ToInt32(obj);
}