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ASP.NET teething problems
f#

Hi Everyone,

I'm looking to build a website in F# using ASP.NET with a custom IHttpHandler (similar to what is already in use in other places in the company for which I work), and have been playing with F#. I really like the language, but can't get it to work with ASP.NET, I get the following error with VisualStudio 2008, IIS 7.0 (not that it matters, I get the same error with VS's webserver) and F# version 1.9.6.2:

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Description: An error occurred during the compilation of a resource required to service
this request. Please review the following specific error details and
modify your source code appropriately. 
            Compiler Error Message: FS0010:

Unexpected incomplete structured construct at or before this point in
open declaration. Expected identifier or other token
Source Error:
Line 29:     #nowarn "51" // address-of operator can occur in the code
Line 30:     open 
Line 31:     open System.Web.Profile
Line 32:     open System.Text.RegularExpressions
Line 33:     open System.Web.Caching
Source File:

C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET

Files\xxxxxxxxxxxxxx\bc3a712c\adaa33e3\App_Web_default.aspx.cdcab7d2.izh2vqkg.0.fs
   Line:  31

This is slightly disturbing, as this seems to be pretty badly malformed auto-generated code. Have I got something utterly wrong here? I will accept any paths to enlightenment you fine people have to offer.

Cheers,

Chris

.

The problem is you have two "open" one on line 30 and 31. The error is the generated aspx F# file but I'm guessing it actually comes from the F# code behind file.

Cheers,

Rob

By on 12/18/2008 2:35 AM ()

Hi,
yes - this looks like a bug in the F# CodeDOM provider. I'm not sure why the generator adds an empty "open" directive. I guess this could happen if you accidentally had something like:

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<%@ import namespace="" %>
<!-- empty namespace -->

in the ASPX page or maybe something like:

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<?xml version="1.0"?>
<configuration>
 <system.web>
    
      <namespaces>
        <add namespace ="" /> <!-- empty namespace -->
      </namespaces>
      
 </system.web>
</configuration>

in the web.config. If that's not the case, then it is definitely a bug.

By on 12/18/2008 2:43 AM ()

Hi Tom,

Thank you very much for your replies, somewhat embarassingly, I was able to clear the problem after doing the traditional "reinstall everything" approach.

Cheers,

Chris

By on 1/21/2009 9:01 AM ()

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