ASP.NET and mapscript - unable to load DLL

[Abe Gillespie]

Hah, you wrote "simple" & "javascript" in the same sentence!  :)

Joking aside, you mentioned ka-Map ... I assume you've looked into Chameleon?

-Abe

On 8/19/05, Ian Erickson <ierickson at analygis.com> wrote:
> Following this thread, I had to ask the following question:
> 
> I know the mapping (and non-mapping) world is wrapped up in Google.  Is
> there any effort on the part of this community to write a pure
> Javascript library that mirrors the functionality present in the Google
> API?  I am aware of the ka-Map project but have not investigated it to
> the level to know whether or not a simple <div> element is enough to
> encapsulate the mapping interface.  Any hints or references to ongoing
> projects to this end would be appreciated!
> 
> A simple browser-generic Javascript API that leverages the capabilities
> of MapServer (rather than Google) could go a great distance in winning
> even wider support for the MapServer project.
> 
> Abe Gillespie wrote:
> 
> >Did you move mapscript.dll to system32 as well?  The only DLL that
> >should be in your bin dir is mapscript_csharp.dll.
> >
> >Suggestions:
> >1.  Write the mapfile by hand with the file streaming objects?
> >2.  Wrap the MapServer CGI executable with ASP.NET (I think someone
> >did just this some time ago).
> >3.  If this is all you're doing, you *might* be able to get away with
> >it in ASP.NET.  See if there's a way to protect a section of ASP.NET
> >code with a semaphore or similar construct.  Is there something that
> >protects in the virtual thread environment?
> >
> >-Abe
> >
> >On 8/19/05, Mike Boos <mboos at augsignals.com> wrote:
> >
> >
> >>I tried moving the dlls to the system32 directory, but that doesn't have
> >>any effect (am I missing any other dependencies?)
> >>
> >>Unfortunately, I'm kind of stuck with ASP.NET, as that's what the rest
> >>of the site relies upon. I'm trying to improve the present setup which
> >>involves sending a request to a C++ CGI program which writes a map file
> >>to the hard disk and forwards the request to mapserv.exe. If you'd ask
> >>me, that's a bit of a kluge, and without Mapscript, all I could do to
> >>improve on that would be to take out the C++ program and have the map
> >>file generated from within the ASP.NET program itself. Can you think of
> >>a better way to accomplish the same task?
> >>
> >>Mike
> >>Abe Gillespie wrote:
> >>
> >>
> >>
> >>>Placing the depended-on DLLs into the bin dir will do nothing.  I
> >>>assume you're on a windows box.  Therefore the easiest way to take
> >>>care of this is by placing all the DLLs (except for map_script) into
> >>><windows>\system32 where <windows> is the system windows directory
> >>>(c:\winnt, c:\windows, etc.).
> >>>
> >>>With that said, you're entering a world of pain by using C# map_script
> >>>in ASP.NET.  Much of the map_script DLL is thread unsafe, that
> >>>combined with ASP.NET's supremely weird threading model (e.g. virtual
> >>>threads), you're going to encounter a plethora of problems.  This is
> >>>why you almost never see MapServer + ASP.NET discussion threads.
> >>>
> >>>To get more info, search the archives.  You should find ten or so
> >>>messages about this topic.
> >>>
> >>>-Abe
> >>>
> >>>On 8/18/05, Mike Boos <mboos at augsignals.com> wrote:
> >>>
> >>>
> >>>
> >>>
> >>>>Hello
> >>>>
> >>>>I'm trying to run Mapscript using the SWIG C# bindings on an ASP.NET
> >>>>server. I compiled the 4.6.0 version of MapServer and have placed what I
> >>>>believe to be the appropriate dependencies (mapscript_csharp.dll,
> >>>>mapscript.dll, libmap.dll, bgd.dll, gdal12.dll, pdflib.dll) in the bin
> >>>>directory on my server. It is appears to be finding
> >>>>mapscript_csharp.dll, but is having trouble finding mapscript.dll or one
> >>>>of its dependencies. I am seeing the following error message:
> >>>>
> >>>>
> >>>> Server Error in '/' Application.
> >>>>
> >>>>
> >>>>   /Unable to load DLL (mapscript)./
> >>>>
> >>>>* Description: *An unhandled exception occurred during the execution of
> >>>>the current web request. Please review the stack trace for more
> >>>>information about the error and where it originated in the code.
> >>>>
> >>>>* Exception Details: *System.DllNotFoundException: Unable to load DLL
> >>>>(mapscript).
> >>>>
> >>>>Am I missing a dependency? Or do I need to set some configuration option
> >>>>or place the files elsewhere?
> >>>>
> >>>>Thanks!
> >>>>Mike Boos
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >
> >
> >
> 
> --
> Ian Erickson
> AnalyGIS, LLC
> http:// www.analygis.com
> 
> 
>