Change webserver used by Flex in FlexBuilder to .NET Framework 3.5

Question

I just had to reformat and reinstall Flex and reconstruct a project.

The problem is i am using ASP.NET as my server side technology and using LINQ in my files. The version of WebDev.Webserver.exe that FlexBuilder starts up is the wrong version so I get this error :

Compiler Error Message: CS0234: The type or namespace name 'Linq' does not exist in the namespace 'System' (are you missing an assembly reference?)

Microsoft (R) Visual C# 2005 Compiler version 8.00.50727.3053 for Microsoft (R) Windows (R) 2005 Framework version 2.0.50727 Copyright (C) Microsoft Corporation 2001-2005. All rights reserved.

I know that changing to the latest version of ASP.NET / Framework will fix this - but I just can't figure out HOW to make that change in Flexbuilder. I cant even remember if i ever successfully did it before or if I just created a virtual directory in IIS7.

Where would I change the version?

Answer 1

It turned out I only had a very minimal web.config file set up.

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <directoryBrowse enabled="true" />
    </system.webServer>
</configuration>

Once I opened the project in Visual Studio (which I hadn't done) - it upgraded the web.config to one of those really long ones and then the 3.5 framework was used. I didn't have to make any changes in the Flex environment.