win32_product uninstall method

I am trying to learn how to call WMI methods in PowerShell, in this case the
win32_product Uninstall method. So far, none of the information I've found
has worked. I've tried 3 methods (I have substituted programname for the
desired program):
1)
$pc = Get-WmiObject -query "SELECT * FROM Meta_Class WHERE
__Class='Win32_Product'"
$pc.uninstall("programname")

this one returns the error "Method invocation failed because
[System.Management.ManagementClass#ROOT\cimv2\Win32_Product] doesn't contain
a method named 'uninstall'.

2)
various iterations of the script found here:
Getting the class, not instances, with Get-WMIObject?

all attempts with this also returned something along the lines of the error
above, regardless of whether I tried the install or uninstall method.

3)
$prog = Get-WmiObject -class win32_product -computername $cmp | Where-Object
{ $_.name -match "programname" }
$prog.uninstall

but this returns
MemberType : Method
OverloadDefinitions : {System.Management.ManagementBaseObject Uninstall()}
TypeNameOfValue : System.Management.Automation.PSMethod
Value : System.Management.ManagementBaseObject Uninstall()
Name : Uninstall
IsInstance : True


Any ideas?

Thanks
Dav

Try to using $prog.uninstall() to invoke the method.

--
greetings
dreeschkind


"Bayer, David" wrote:

> I am trying to learn how to call WMI methods in PowerShell, in this case the
> win32_product Uninstall method. So far, none of the information I've found
> has worked. I've tried 3 methods (I have substituted programname for the
> desired program):
> 1)
> $pc = Get-WmiObject -query "SELECT * FROM Meta_Class WHERE
> __Class='Win32_Product'"
> $pc.uninstall("programname")
>
> this one returns the error "Method invocation failed because
> [System.Management.ManagementClass#ROOT\cimv2\Win32_Product] doesn't contain
> a method named 'uninstall'.
>
> 2)
> various iterations of the script found here:
> Getting the class, not instances, with Get-WMIObject?
>
> all attempts with this also returned something along the lines of the error
> above, regardless of whether I tried the install or uninstall method.
>
> 3)
> $prog = Get-WmiObject -class win32_product -computername $cmp | Where-Object
> { $_.name -match "programname" }
> $prog.uninstall
>
> but this returns
> MemberType : Method
> OverloadDefinitions : {System.Management.ManagementBaseObject Uninstall()}
> TypeNameOfValue : System.Management.Automation.PSMethod
> Value : System.Management.ManagementBaseObject Uninstall()
> Name : Uninstall
> IsInstance : True
>
>
> Any ideas?
>
> Thanks
> Dav
>
>

Doh! Amazing the difference that a little syntax will make... It's working
now - Thanks!

Dav

"dreeschkind" <dreeschkind@discussions.microsoft.com> wrote in message
news:4CA50EFC-780C-443C-B839-79231A580EA1@microsoft.com...
> Try to using $prog.uninstall() to invoke the method.
>
> --
> greetings
> dreeschkind
>
>
> "Bayer, David" wrote:
>
>> I am trying to learn how to call WMI methods in PowerShell, in this case
>> the
>> win32_product Uninstall method. So far, none of the information I've
>> found
>> has worked. I've tried 3 methods (I have substituted programname for the
>> desired program):
>> 1)
>> $pc = Get-WmiObject -query "SELECT * FROM Meta_Class WHERE
>> __Class='Win32_Product'"
>> $pc.uninstall("programname")
>>
>> this one returns the error "Method invocation failed because
>> [System.Management.ManagementClass#ROOT\cimv2\Win32_Product] doesn't
>> contain
>> a method named 'uninstall'.
>>
>> 2)
>> various iterations of the script found here:
>> Getting the class, not instances, with Get-WMIObject?
>>
>> all attempts with this also returned something along the lines of the
>> error
>> above, regardless of whether I tried the install or uninstall method.
>>
>> 3)
>> $prog = Get-WmiObject -class win32_product -computername $cmp |
>> Where-Object
>> { $_.name -match "programname" }
>> $prog.uninstall
>>
>> but this returns
>> MemberType : Method
>> OverloadDefinitions : {System.Management.ManagementBaseObject
>> Uninstall()}
>> TypeNameOfValue : System.Management.Automation.PSMethod
>> Value : System.Management.ManagementBaseObject Uninstall()
>> Name : Uninstall
>> IsInstance : True
>>
>>
>> Any ideas?
>>
>> Thanks
>> Dav
>>
>>