ASP.NET and mapscript - unable to load DLL

[Tamas Szekeres]

Have you tried SysInternals's filemon or a similar program to monitor the
expected location of theese files?



On Fri, 19 Aug 2005 13:23:38 -0400, Mike Boos <mboos at AUGSIGNALS.COM> wrote:

>mapscript_csharp.dll is present in the bin directory. All the others are
>in system32. gdal12.dll is in both as I'm somehow invoking a function
>from it from elsewhere and not having the slightest bit of trouble with
>that part (I'm using a direct DllImport attribute). So maybe I will have
>to try one of the alternatives. Oh well.
>
>Mike
>
>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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
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