Hello,
I’m a little confused how can I run my script and specify -Verbose to make Write-Verbose appear which are in my script. Where do I specifically put CmdletBinding attribute?
Hello,
I’m a little confused how can I run my script and specify -Verbose to make Write-Verbose appear which are in my script. Where do I specifically put CmdletBinding attribute?
The CmdletBinding attribute goes right before the param statement at the beginning of your function:
function Do-Something { [CmdletBinding()] param ( ) Write-Verbose 'This is verbose!' } Do-Something -Verbose
What happens if I don’t have param() declaration and I declare them like function($x, $y), I tried to put [cmdletbinding]there but it failed with error below. Code and error are below
function GetResponse ($URI, $Hostname)
{
[CmdletBinding()]
try
{
$ResponseCode = (Invoke-WebRequest -Uri $URI -Headers @{“Host”=“$Hostname”} -TimeoutSec 5).StatusCode
PS C:\Users\gsuvalian\Documents> \prod\serverops\BuildStandards\scripts\getCCSStatus.ps1 -verbose
At \prod\serverops\BuildStandards\scripts\getCCSStatus.ps1:7 char:1
Unexpected attribute ‘CmdletBinding’.
At \prod\serverops\BuildStandards\scripts\getCCSStatus.ps1:8 char:1
Unexpected token ‘try’ in expression or statement.
+ CategoryInfo : ParserError: ( , ParseException
+ FullyQualifiedErrorId : UnexpectedAttribute
You can’t do that. CmdletBinding must be applied to a param statement, even if the parentheses after param are empty (as in my example.) Advanced functions must always use the param() construct, not the “Function Do-Something($paramList)” declaration.
Do i need to put [CmdletBinding()] in all functions in my script or only the ones which have Write-Verbose?
My process is calling a workflow and that workflow in turn calling function inside script. So do I put [CmdletBinding()] in both workflow and function?
This did not work, what I have is below. I call this script with -verbose and nothing happens, no Write-Verbose execute
function A {
[CmdletBinding()]
param()
}
workflow B
{
[CmdletBinding()]
param()
A
}
B
It’s generally a good idea to put CmdletBinding() in all functions. The only exceptions I make are for internal helper functions in a module, where I control all of the calls to those functions. In those cases, I’ll often write old, non-advanced functions (even if they contain calls to Write-Verbose and similar functions), for two reasons:
Workflows are something I don’t have much experience with. I’m not sure how they interact with normal functions regarding scope, common parameters, etc.
It works if I put $VerbosePreference = “Continue” at the start of the script, but would not work if I start my script with -verbose parameter
The -Verbose parameter is only available if [CmdletBinding()] is present. Otherwise, you can set $VerbosePreference.
Yes, I put that tag on both function and workflow but it still does not work, only $VerbosePreference is working.
OK. I figure it out. I was supposed to call Workflow withing my script with -Verbose parameter instead of calling my script with -Verbose
So if I have ps1 file, how do I make it accept -Verbose parameter and pass it to all underlying invocations of WorkFlow inside script?
When you call a function with the -Verbose parameter, what it does is set the $VerbosePreference variable inside that function to ‘Continue’. It could be that workflows aren’t picking up on that function-scoped value for some reason.
Now that you know what the problem is, though, you could write some code around it. For example:
$splat = @{} if ($VerbosePreference -eq 'Continue') { $splat['Verbose'] = $true } YourWorkflowName @splat
I meant workflow works fine when I call it with -Verbose parameter. My entire script is below. I want to call that script with -Verbose and it somehow translates into call B at the end with -Verbose. Can it be done automatically without making conditional statements?
function A {
[CmdletBinding()]
param()
}
workflow B
{
[CmdletBinding()]
param()
A
}
B -Verbose
Not really. I suppose you could try something like this, to at least keep from adding any new lines to the code:
B -Verbose:($VerbosePreference -eq 'Continue')
If you start your script with
[CmdletBinding()] param() # code
Then you can launch your script with .\scriptname.ps1 -Verbose
If you want to pass the verbose preference to other scripts called from inside your script, you can do this:
[CmdletBinding()] param() .\anotherScript -Verbose:$VerbosePreference AnotherWorkflowOrFunction -Verbose:$VerbosePreference
This way the Verbose parameter will be passed in whatever state it is.
Thanks that did the trick
I did not know that attribute can be applied to the script as a whole