My client uses a process that uses XMLSS to create XML documents that can be opened in Microsoft Excel. In fact, simply renaming the files to .XLS, will ensure that the documents open in Excel by default. These documents are emailed to our clients. The documents open successfully in for Excel for PC and MAC, as well as OpenOffice (both platforms). It's a pretty nice solution.
The problem is, some of our clients have started attempting to open these documents (for viewing) on their iPhones and iPads (iOS devices), and it doesn't work. We know that iOS devices can open actual Office files, but since our documents are really just XML (and not true Excel files), the viewer on iOS doesn't want to view them. At least that's my guess.
We have played with sending these files with both XML and XLS extensions.
I'm aware of the option of using different techniques for building these documents such that they become true XLS files... but obviously, we're not eager to rewrite the entire application when most of our functionality remains just fine.
Any tips, ideas, suggestions?