/// <summary>
/// Event handler for when Data is added to the a stream.
/// </summary>
/// <param name="sender">Contains the complete PSDataCollection of all error output items.</param>
/// <param name="e">Contains the index ID of the added collection item and the ID of the PowerShell instance this event belongs to.</param>
void Output_DataAdded(object sender, DataAddedEventArgs e)
{
if (sender is PSDataCollection <ErrorRecord> )
{
PSDataCollection <ErrorRecord> data = sender as PSDataCollection <ErrorRecord>;
Console.WriteLine("Error: " + data.Last <ErrorRecord>().ToString());
}
else if (sender is PSDataCollection <WarningRecord> )
{
PSDataCollection <WarningRecord> data = sender as PSDataCollection <WarningRecord>;
Console.WriteLine("Warning: " + data.Last <WarningRecord>().Message);
}
else if (sender is PSDataCollection <InformationRecord> )
{
PSDataCollection <InformationRecord> data = sender as PSDataCollection <InformationRecord>;
Console.WriteLine("Info: " + data.Last <InformationRecord>().ToString());
}
else if (sender is PSDataCollection <DebugRecord> )
{
PSDataCollection <DebugRecord> data = sender as PSDataCollection <DebugRecord>;
Console.WriteLine("Debug: " + data.Last <DebugRecord>().Message);
}
else if (sender is PSDataCollection <VerboseRecord> )
{
PSDataCollection <VerboseRecord> data = sender as PSDataCollection <VerboseRecord>;
Console.WriteLine("Verbose: " + data.Last <VerboseRecord>().Message);
}
else if (sender is PSDataCollection <ProgressRecord> )
{
PSDataCollection <ProgressRecord> data = sender as PSDataCollection <ProgressRecord>;
ProgressRecord lastRecord = data.Last <ProgressRecord>();
Console.WriteLine("Progress: " + lastRecord.Activity + ": " + lastRecord.StatusDescription);
}
}
/// <summary>
/// Event handler for when data is added to the output stream.
/// </summary>
/// <param name="sender">Contains the complete PSDataCollection of all output items.</param>
/// <param name="e">Contains the index ID of the added collection item and the ID of the PowerShell instance this event belongs to.</param>
void outputCollection_DataAdded(object sender, DataAddedEventArgs e)
{
PSDataCollection <PSObject> data = sender as PSDataCollection <PSObject>;
PSObject last = data.Last <PSObject>();
// do something when an object is written to the output stream
Console.WriteLine(last.ToString());
}
/// <summary>
/// Return the last output to the user. This will be null if the operation did not succeed.
/// outputAction is the action that will be performed whenever an object is outputted to the powershell pipeline
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="powershell"></param>
/// <param name="command"></param>
/// <param name="outputAction"></param>
/// <param name="errorAction"></param>
/// <param name="args"></param>
/// <returns></returns>
internal static T InvokeFunction <T>(this PowerShell powershell, string command,
EventHandler <DataAddedEventArgs> outputAction, EventHandler <DataAddedEventArgs> errorAction, params object[] args)
{
if (powershell != null)
{
powershell.Clear().AddCommand(command);
foreach (var arg in args)
{
powershell.AddArgument(arg);
}
#if DEBUG
NativeMethods.OutputDebugString("[Cmdlet:debugging] -- InvokeFunction ({0}, {1})".format(command, args.Select(each => (each ?? "<NULL>").ToString()).JoinWithComma(), powershell.InvocationStateInfo.Reason));
#endif
var input = new PSDataCollection <PSObject>();
input.Complete();
var output = new PSDataCollection <PSObject>();
if (outputAction != null)
{
output.DataAdded += outputAction;
}
if (errorAction != null)
{
powershell.Streams.Error.DataAdded += errorAction;
}
powershell.Invoke(null, output, new PSInvocationSettings());
if (output.Count == 0)
{
return(default(T));
}
// return the last output to the user
PSObject last = output.Last();
if (last != null)
{
// convert last to T
return((T)last.ImmediateBaseObject);
}
}
return(default(T));
}
