Hi,

We have built a special high performance DB for our particular application which also needs to run under ASP.Net 2.

As you might have guessed from the subject it is in C++ and uses
Win32 for higher performance. The DB has over 6 million records and counting.

Is there a way of running ASP.Net application at medium level security but at the same time allowing a particular code area to be able to run Win32 application? We need the higher performance as well as portability of C++.

A sample code would be great.

Thanks in advance.

You need a managed wrapper for your C++ code that has the following characteristics:

1. The managed wrapper needs the ability to call unmanaged code
2. The managed wrapper needs to allow partial trust user code to call it

You can accomplish this by writing a managed assembly that is attributed with APTCA, and placing the assembly in the GAC. By existing the GAC the assembly can internally assert unmanaged code permissions which will allow it to call into your C++ code. The existence of the APTCA attribute will allow untrused ASP.NET code to call public methods exposed from your managed assembly.

Chapter 3 in the book has a simple walkthrough of creating a GAC-deployed APTCA attributed assembly in the section titled "Working with the AllowPartiallyTrustedCallers Attribute"

-Stefan