Documentum comes with DFC API for accessing the content server and DFC
5.2.5 onwards comes with Primary Interop Assembly (PIA) which makes the
DFC accessible from .NET code. The PIA integrates seamlessly into
Microsoft Visual Studio .NET and supports rich design-time features
including statement completion and object browser help. At runtime, the
PIA provides a thin, efficient layer through which .NET code can access
the DFC via the Documentum Java to COM bridge.
A supported version of the PIA ships with DFC 5.2.5 and any releases
that follow. The document "DFC PIA Development Guide" is included
with the DFC 5.2.5 documentation.
You can find sample ASP.NET application @ Documetnum Developer site.