Using C# and VB.net togheter in Asp.net

To use in the same Asp.net Web Application classes written in different languages, such C# and VB.net, you have to do this steps:

Create in the App_Code folder two subfolder, called for example VB and CS:

App_Code

->VB

->CS

Next, add in the web.config this lines:

<system.web>

[...]
<compilation>
<codeSubDirectories>
<add directoryName="CS"/>
<add directoryName="VB"/>
codeSubDirectories>

[...]
compilation>

system.web>

And voila, its done!

PS: obviously, you have to put all vb.net classes in a folder and all the c# classes in the other folder...