How do I get the type of the variable from a parameter using PowerShell?
Something to the effect of if TypeOf(xyz) is String or if TypeOf(xyz) is integer.
For my purpose I want to check if it is a string or a securestring. I would like to use a single function with a parameter. Not two separate functions, one for a securestring and one for a string.
The direct answer to your question is to use the -is operator:
if ($xyz -is [String]){}
if ($xyz -is [SecureString]){}
if ($xyz -isnot [int]){}
However, digging deeper:
I would like to use a single function with a parameter. Not two separate functions, one for a securestring and one for a string.
You can use a single function, with parameter sets to distinguish between which version you're using:
function Do-Thing {
[CmdletBinding()]
param(
[Parameter(
ParameterSetName = 'Secure',
Mandatory = $true
)]
[SecureString]
$SecureString ,
[Parameter(
ParameterSetName = 'Plain',
Mandatory = $true
)]
[String]
$String
)
switch ($PSCmdlet.ParameterSetName)
{
'Plain' {
# do plain string stuff
}
'Secure' {
# do secure stuff
}
}
}
Go ahead and run that sample definition, and then look at the help:
Get-Help Do-Thing
You'll see the generated parameter sets, which show the two ways you can call it. Each way has a single, mutually-exclusive parameter.
NAME Do-Thing SYNTAX Do-Thing -SecureString <securestring> [<CommonParameters>] Do-Thing -String <string> [<CommonParameters>]
if ($xyz -is [String]){} if ($xyz -is [bool]){} if ($xyz -is [int]){} It works. If I use: if ($xyz -is [SecureString]){} It will not work. It gets pickedup as a PSOBject or PSCustomObject. How do I get around that?
$xyz. What is the output of $xyz.GetType().FullName?