Creating an IIS7 application with PowerShell

I seem to be stuck trying to create a new IIS application using WMI and PowerShell.
Based on code generated from WMIExplorer, I created the following function:

function make-webapplication ($AppPath, $Directory, $SiteName) {
$Computer = "."
$Class = "Application"
$Method = "Create"

$MC = [WmiClass]"\\$Computer\ROOT\WebAdministration:$Class"

$InParams = $mc.psbase.GetMethodParameters($Method)

$InParams.ApplicationPath = $AppPath
$InParams.PhysicalPath = $Directory
$InParams.SiteName = $SiteName

"Calling Application. : Create with Parameters :"
$inparams.PSBase.properties | select name,Value | format-Table

$R = $mc.PSBase.InvokeMethod($Method, $inParams, $Null)
"Result :"
$R | Format-list
}

However, whenever I run the function I get an error on the InvokeMethod call
with a parameter error.

Joe Brinkman wrote: I tried on beta 3, and it worked fine. I didn't pass anything as args
to a function, and wrote the commands line-by-line. I started off with:

$AppPath="/newapp"
$Directory="C:\test"
$SiteName="Default Web Site"
$Computer="."

So try it without putting everything into a function just to see.
Perhaps something is happening to the args once passed in, so make sure
to echo them to the screen.

(Great VBScript examples:
http://www.iis.net/articles/onepagea...n-Pools-on-IIS)

Marco

--
----------------
PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

Marco,

I tried it from the command line as well when I first posted and I recieved
exactly the same error. I am running on Vista so IIS7 is slightly different.
Since the original code was generated by WMIExplorer I assumed that the
code is probably correct. I am wondering if there may be some IIS setting
or configuration that is not correct. I have tried running as both an admin
and non-admin and I get the same error.

Joe Brinkman wrote: I've got Vista Biz, but can't check right now.

Check this guy's super-duper IIS blog for code samples:
http://weblogs.asp.net/steveschofield/default.aspx

Marco



--
----------------
PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

Joe Brinkman wrote: OK, I tried this my Vista Business VM, and I didn't get an error and the
app was created successfully.

I had just added IIS (for this test), and the web scripting component to
this VM, so IIS is set to all the defaults. I ran the code against the
default web site.

Have you tried this on a new site with the default settings? I don't
have SP1 installed, do you?

Marco

--
Microsoft MVP - Windows PowerShell
http://www.microsoft.com/mvp

PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

OK. I am an idiot. I guess sometimes you really should look at the documentation
closely. I was passing in a sitename thinking that it described the web
application rather than the site where I was adding the application. My
original function works just fine. Although on a positive note, I now have
a better understanding of using WMI with Powershell (although the WMI part
of that eqation still presents plenty of mystery).

Thanks for all the help.

Joe Brinkman

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