PowerShell函数参数设置成自动识别数据类型的例子

function Test-Binding {
    [CmdletBinding(DefaultParameterSetName='Name')]
    param(
        [Parameter(ParameterSetName='ID', Position=0, Mandatory=$true)]
        [Int]
        $id,
        [Parameter(ParameterSetName='Name', Position=0, Mandatory=$true)]
        [String]
        $name
    )
    $set = $PSCmdlet.ParameterSetName
    “You selected $set parameter set”
    if ($set -eq ‘ID') {
        “The numeric ID is $id”
    } else {
        “You entered $name as a name”
    }
}

PS> Test-Binding -Name hallo
You selected Name parameter set
You entered hallo as a name
PS> Test-Binding -Id 12
You selected ID parameter set
The numeric ID is 12
PS> Test-Binding hallo
You selected Name parameter set
You entered hallo as a name
PS> Test-Binding 12
You selected ID parameter set
The numeric ID is 12