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public static class PowershellExtensions
{
public static Collection<PSObject> InvokeCommandAndRestoreDefaultTraceListener(this Pipeline pipeline)
{
bool hasDefaultTraceListener = PowershellExtensions.IsDefaultTraceListenerPresent();
Collection<PSObject> results = pipeline.Invoke();
if(hasDefaultTraceListener && !PowershellExtensions.IsDefaultTraceListenerPresent())
{
Trace.Listeners.Add(new DefaultTraceListener());
}
return results;
}
private static bool IsDefaultTraceListenerPresent()
{
foreach(TraceListener listener in Trace.Listeners)
{
if(listener is DefaultTraceListener)
{
return true;
}
}
return false;
}
}
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