[uwp] CommandLineActivatedEventArgs getting Arguments exception

Question

In this code:

Protected Overrides Async Sub OnActivated(args As IActivatedEventArgs)

      Dim commandLine As CommandLineActivatedEventArgs = TryCast(args, CommandLineActivatedEventArgs)
      Dim operation As CommandLineActivationOperation = commandLine.Operation

       Dim strArgs As String = operation.Arguments

I got exception: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) in last line.
And app is Activated with cmdline with param "00:15:A6:00:xx:xx on".
Is there any possibility to deal with this problem?

Min version: 16299, target version: 19041.

Answer 1

I don't remember :)

Now, I have

        Dim commandLine As CommandLineActivatedEventArgs = TryCast(args, CommandLineActivatedEventArgs)
        Dim operation As CommandLineActivationOperation = commandLine?.Operation
        Dim strArgs As String = operation?.Arguments

and it works.
Maybe change in Manifest, I don't know.
Min version 14393, target version 19041.

Currently, all my apps have something like that:

  < .. xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
      xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5" 
     IgnorableNamespaces="uap mp uap3 uap5">


    <uap:Extension Category="windows.appService">
      <uap:AppService Name="com.microsoft.pkar.instamonitor"/>
    </uap:Extension>
    <uap5:Extension
      Category="windows.appExecutionAlias"
      Executable="instamonitor.exe"
      EntryPoint="instamonitor.App">
      <uap5:AppExecutionAlias>
        <uap5:ExecutionAlias Alias="instamonitor.exe" />
      </uap5:AppExecutionAlias>
    </uap5:Extension>