Eliot Christian wrote:
> A set of free, open source tools for mounting open standards-based
> geospatial data servers is now available as a .Net SDK (see
> http://www.thecarbonproject.com/products/carbon.html ).
>
> Missing from this suite is the Z39.50 search service. Z39.50
> is required for servers to participate in the various Spatial
> Data Infrastructures (now grown to about 50 nations worldwide,
> with almost 400 metadata servers searchable through the GSDI
> Clearinghouse.)
>
> If you have or know of .Net components that could provide Z39.50
> server and client functions to this SDK, please let me know!

Hi Eliot,

I have an ActiveX COM implementation of the ZOOM API which makes
developing Z39.50 clients relatively painless.  I have corresponded with
people about using this from within a .NET environment using the COM
interop capabilities, but I don't really know how successful they were.

If you check out the http://zoom.z3950.org/ site you will find a number
of different language bindings for ZOOM, including a C# version.
However, I can't seem to get access to it, so I'm not sure of its status.

I know quite a bit less about server implementations, but I am not aware
of any .NET toolkits for this, but you might be able to get one of the C
or C++ based toolkits to work from within .NET.  You might look at the
YAZ toolkit from IndexData for this.

Kind regards,
        Tom Habing
>
> Eliot
>
> ------------------------------------------------------------------
>
> CarbonTools
> Geospatial .NET development toolkit
>
> The mission of CarbonTools(TM) is to make open geospatial services
> accessible to Windows developers. The CarbonTools SDK provides an
> open and extendable framework on which Windows and .NET developers
> can build software solutions.
>
> The CarbonTools toolkit provides an extensive API that supports
>  the Open Geospatial Consortium (OGC) specifications including
> Web Map Services (WMS), Web Feature Services (WFS) and Geography
> Markup Language (GML). These extensive and robust specifications
> are a major challenge for developers. The CarbonTools API makes
> these specifications accessible to developers. Beginners as well
> as the most advanced developers should find that supporting
> geospatial solutions is a manageable task with CarbonTools.
>
> ------------------------------------------------------------------