public void bind()
{
DataTable day = BLL_Hotel.Cha_Charge(0);
DataTable week = BLL_Hotel.Cha_Charge(7);
DataTable month = BLL_Hotel.Cha_Charge(31);
DataTable history = BLL_Hotel.Cha_Charge(100000000);
if (day.Rows[0][0].ToString() != "")
{
this.Label1.Text = day.Rows[0][0].ToString();
}
this.Label2.Text = week.Rows[0][0].ToString();
this.Label3.Text = month.Rows[0][0].ToString();
this.Label4.Text = history.Rows[0][0].ToString();
}