Of course you can open the office files using the browser without the networking, but it's IE only, please make a try using the following way:Response.AppendHeader("Content-Disposition", "attachment;filename=excel.xls"); Response.ContentType = "application/ms-excel";
You need to set the header and content type to let the browser know which format will be opened.
You can directly put the header and content type to the meta element, it's ok.
Response.ContentType = "application/ms-excel";