Need to create a Web Service around an Excel File ??
Here is a simple way to do so, without using .Net interop to Excel (that could raise issues in memory usage, even if COM objects are properly cleaned up).
As far as I am concerned, I used Aspose.Cells for .NET, which is a simple, but powerfull library to :
1/ Send values to my Excel WCF service,
2/ Let Excel perform all the complexe sums (most importantly, let a non technical users to update the Excel files),
3/ Gets the data and convert them into ADO.Net, so that it could be DataBound easily,
4/ Get all the returned values back to my orginal application,
A stress/load test on the solution proves that it can handle a great amount of calls.
PS: Other possibilities could be EXCEL Services from MOSS Enterprise, Office 2010 (EXCEL Web Access), ...
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