CODEWITHSUNDEEP
c#asp.netiis-7.5dll
Kristian Frost
Kristian Frost

Reputation: 791

ASP.NET web application: Unable to read DLL

I have an ASP.NET application, which has two references added: MapServer and GDAL. These two DLL's uses a bunch of other DLL's, and all of them are in my applications /bin directory.

When I run the application on my own PC in Visual Studio 2010 it runs fine. When I upload it to my Windows 2008 server with IIS it throws this exception:

Could not load file or assembly 'gdal_csharp' or one of its dependencies.
An attempt was made to load a program with an incorrect format.

When running the application through Visual Studio on the server it runs fine.

I've even tried adding the /bin directory to the PATH enviroment variable, and restarting the server. No luck though.

Upvotes: 1

Views: 1325

Answers (3)

Bebben
Bebben

Reputation: 735

My guess is that the DLL is a 32-bit only DLL that you are trying to run in a x64-environment. Can you try to set the app-pool to 32-bit only?

Update: a simple instruction is here: http://help.webcontrolcenter.com/KB/a1114/how-to-enable-a-32-bit-application-pool-in-iis7-dedicatedvps.aspx

Upvotes: 4

Richard Friend
Richard Friend

Reputation: 16018

As already mentioned you may be missing something from the GAC.

To see whats happening you could try turning on Fusion Logging, this will enable you to view all of the assembly load failures.

Back to Basics: Using Fusion Log Viewer to Debug Obscure Loader Errors

Upvotes: 0

Ricardo
Ricardo

Reputation: 1025

You need to register the dll at GAC: http://en.wikipedia.org/wiki/Global_Assembly_Cache

Upvotes: 0

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