Send query results to Excel from ASP.NET website

Question

We let users create ad-hoc queries in our website. We would like to have the user select their criteria, then click submit and have the results streamed automatically to Ex

Answer 1

I would use a handler for the .xls file extension and a free component to convert the DataTable to native xls format. The component from this site http://www.csvreader.com/ does more that the URL implies. The newest version of excel will complain about an HTML formatted XLS file. Also keep in mind the size of the data being returned. Your web server should use compression for this extension and your code should check if the number of rows returned is greater than what excel can display in one worksheet; multiple sheets may be required. http://www.mrexcel.com/archive2/23600/26869.htm