A while back, I
figured out how to get data out of an
IAsyncOperation in PowerShell using no third-party assemblies.
IAsyncOperation has a relative named
IAsyncAction that represents an asynchronous operation that returns no data. Awaiting it requires a slightly different function:
Add-Type -AssemblyName System.Runtime.WindowsRuntime
Function AwaitAction($WinRtAction) {
$asTask = ([System.WindowsRuntimeSystemExtensions].GetMethods() | ? { $_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and !$_.IsGenericMethod })[0]
$netTask = $asTask.Invoke($null, @($WinRtAction))
$netTask.Wait(-1) | Out-Null
}
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