Hi fareed.fd7,
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[5] {
new DataColumn("ProductId", typeof(string)),
new DataColumn("Product", typeof(string)),
new DataColumn("Price", typeof(int)),
new DataColumn("Quantity", typeof(int)),
new DataColumn("Total", typeof(int))});
dt.Rows.Add(101, "Sun Glasses", 200, 5, 1000);
dt.Rows.Add(102, "Jeans", 400, 2, 800);
dt.Rows.Add(103, "Trousers", 300, 3, 900);
dt.Rows.Add(104, "Shirts", 550, 2, 1100);
You need to fetch the data from database and fill the datatable and continue rest of process as in the article.