Vista - inconsistent behavior

In powershell console, I typed "calc", then "windows caculator"
appear, then powershell immediately returned and I could type other
commands, though "windows caculator" are still running.

But if I wrote the following code in VS, I must manually close
"windows caculator" first, the Main function return.

So, why the behaviors are inconsistent?

using ....
namespace Host3 {
class Program {
static void Test2() {
Runspace runspace = RunspaceFactory.CreateRunspace();
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline("calc");
pipeline.Invoke();
runspace.Close();
}
static void Main(string[] args) {
Test2();
}
}
}

On Aug 19, 11:40*pm, rmq <zhangf...@xxxxxx> wrote:My C# foo isn't terribly strong, but I believe the problem is that
you're creating a pipeline that is going to keep waiting for output
from the command, because rather than just spawning a process you're
holding open the pipeline for it.

The same thing happens if you type this in at the prompt:

calc | select *

Your command won't return until calc.exe exits because the pipeline is
waiting for objects.

On Aug 20, 4:38*pm, tojo2000 <tojo2...@xxxxxx> wrote:I agree with you , because the host application does not need a return
value, so host return to prompt quickly.
but do you know how to config and make the host must wait "calc"
return?
thx

On Aug 21, 1:25*am, rmq <zhangf...@xxxxxx> wrote:Like I said, my C# skills aren't the greatest, but does this help?
http://www.c-sharpcorner.com/UploadF...mandsInCS.aspx

On Aug 21, 5:13*pm, tojo2000 <tojo2...@xxxxxx> wrote:Thank you tojo2000 for your great help!!