1DataSet ds = new DataSet();
2  SqlConnection cn = new SqlConnection("server=(local);database=Northwind;user              id=sa;password=;");
3 SqlCommand cmd = new SqlCommand("Select * from customers;Select * from      employees",cn) ;
4 cn.Open();
5 SqlDataAdapter da = new SqlDataAdapter(cmd);
6 da.Fill(ds);
7 ds.WriteXml(Server.MapPath("Customers.xml")) ; 
8   
9
10   ds.ReadXml(Server.MapPath("Customers.xml"));
11   string xml = WorkbookEngine.CreateWorkbook(ds);
12   Response.ContentType = "application/vnd.ms-excel";
13   Response.Charset = "";
14   Response.Write(xml);
15   Response.Flush();
16   Response.End();
17