private void btnxem_Click(object sender, EventArgs e) { using (quanlithucungEntities1 quanli = new quanlithucungEntities1()) { DataTable table = new DataTable(); table.Columns.Add("mathucung"); table.Columns.Add("tenthucung"); table.Columns.Add("slnhap"); table.Columns.Add("slban"); table.Columns.Add("sltrongkho"); table.Columns.Add("ngaylap"); List <tctonkho_Result> ds_hoadon = quanli.tctonkho(dtpthang.Value.Month, dtpthang.Value.Year, comboBox1.SelectedValue.ToString()).ToList(); foreach (var item in ds_hoadon) { table.Rows.Add(item.Mathucung, item.Tenthucung, item.slnhap, item.slban, item.sltrongkho, item.Ngaylap); } bunifuCustomDataGrid1.DataSource = table; } }