使用Visual Studio 2015编译C＃Webform的纯x64 dll

Question

I'm working with visual studio 2015 and .net 4.5.2 on a Windows 2012 server. I'm trying to generate a pure x64 dll for a my webforms application. I've followed the instruction found here:

https://msdn.microsoft.com/en-us/library/zekwfyz4(v=vs.140).aspx

The reason I'm doing this is because I need to call some x64 c++ routines which have been compiled with the /clr switch.. When I attempt to call my c++ routines from testpage.ascx.cs I get:

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

I've used dependency walker to confirm that the dll generated for my webform application is still x86 even though everything else in the dll is x64.

How can I get VS 2015 to generate a pure x64 dll for my webforms application?

Answer 1

This issue appears to be related to the fact that the web app was running under IIS Express. After creating a new web app that ran under IIS, the x64 compile worded as expected.