Creating a Virtual Directory with ASP.NET 2.0 support

This script is helpful when you have different versions of the .NET framework running in your computer and you need to setup a virtual directory in IIS targeting one of them.
If you have the versions 1.1 and 2.0, when you create a virtual directory in IIS, it takes a version by default, usually 1.1.

The script is very simple, it creates a virtual directory using WMI and then it uses the tool "aspnet_regiis.exe" to setup the .NET framework scriptmaps.

Note: It is using the version 2.0, you should change the following line to use another version:

netPath = fso.BuildPath( winPath, "Microsoft.NET\Framework\v2.0.50215" )

The script looks as follow:

Sub CreateWebFolder( folderPath, folderName, createApp )
   Dim vRoot, vDir, tempDir

   Set vRoot = GetObject("IIS://localhost/W3svc/1/Root" )

   On Error Resume Next
   Set vDir = GetObject( "IIS://localhost/W3svc/1/Root/" + folderName )

   If( vDir is Nothing ) Then
      Set vDir = vRoot.Create("IIsWebVirtualDir", folderName)
   End If

   vDir.AccessRead = true
   vDir.Path = folderPath
   vDir.AuthFlags = 5

   vDir.DirBrowseFlags = &H4000003E

   vDir.EnableDirBrowsing = False
   If createApp then vDir.AppCreate( true )
   vDir.AccessScript = True


   UpdateScriptMaps folderName
End Sub

Sub UpdateScriptMaps( folderName )

   Dim winPath, netPath, toolPath
   Dim wsShell
   Dim fso

   Set wsShell = CreateObject("WScript.Shell")
   Set fso = CreateObject("Scripting.FileSystemObject")

   winPath = wsShell.ExpandEnvironmentStrings( "%windir%" )
   netPath = fso.BuildPath( winPath, "Microsoft.NET\Framework\v2.0.50215" )
   toolPath = fso.BuildPath( netPath, "aspnet_regiis.exe" )

   wsShell.Run toolPath & " -sn W3SVC/1/Root/""" & folderName & """", 1, true
End Sub

The following line shows how to use this script :

CreateWebFolder "c:\temp\SampleVDir", "SampleVDir", false


  • the only problem is that aspnet_regiis creates an async call to IIS to update the .net version.

    IF this takes a long time, it can attempt to restart the w3svc before IIS has finished updated the .net version.

    this puts IIS into a bad state, such that you have to kill inetinfo.

    this will not effect all servers, i guess it just depends how fast IIS completes the request.

    to avoid the problem, stop iisadmin before running aspnet_regiis, and then restart it after a delay (5 secs on our server was enough).

  • i just wanted to create a virtual directory in IIS and this is very good code. thanks for sharing it.

  • Hi, nice code, just one question, will this work on medium trust environment, most of the webhost right now supports middle trust.

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