Extracting Repeating Table Data in Web Parts

[lday]

Hi,
I am pretty new to developing in InfoPath and SharePoint.

I have the requirement to extract repeating table data from an InfoPath form using web part (written in C#).

I have been looking into how I might go about doing this but I don't seem to have come up with a solution.

I have tried getting the document as an XML document but it will not let me open it in the web part and claims I don't have the correct permissions, even though i have full permissions across the whole site (including on the document library)

Could anyone point me in the right direction or offer any advice?

Many thanks in advance,
Luke