private void btnVeBieuDo_Click(object sender, EventArgs e)
{
chBieuDo.Series["Doanh thu"].Points.Clear();
int i = 0;
foreach (DataRow row in SachBUS.BieuDo(dtkTu.Value, dtkDen.Value).Rows)
{
chBieuDo.Series["Doanh thu"].Points.Add(Int64.Parse(row["Doanhthu"].ToString()));
chBieuDo.Series["Doanh thu"].Points[i].Color = Color.Red;
chBieuDo.Series["Doanh thu"].Points[i].BorderWidth = 2;
chBieuDo.Series["Doanh thu"].Points[i].AxisLabel = DateTime.Parse(row["NgayBan"].ToString()).ToShortDateString();
chBieuDo.Series["Doanh thu"].Points[i].Label = string.Format("{0:0,0}", row["Doanhthu"]);
i++;
}
dgvDanhSach.DataSource = SachBUS.BieuDo(dtkTu.Value, dtkDen.Value);
Custom();
dgvDanhSach.ClearSelection();
}