I know how to execute a single powershell command and view the results of it using C# code. But I want to know how to execute a set of related commands as below and get the output:
$x = some_commandlet
$x.isPaused()
Simply, I want to access the return value of $x.isPaused()
.
How do I add this functionality to my C# application?
For such commands, it is better that you create something called pipeline and feed it your script. I have found a good example of this. You can find further about this code and such projects here .
private string RunScript(string scriptText)
{
// create Powershell runspace
Runspace runspace = RunspaceFactory.CreateRunspace();
// open it
runspace.Open();
// create a pipeline and feed it the script text
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript(scriptText);
// add an extra command to transform the script
// output objects into nicely formatted strings
// remove this line to get the actual objects
// that the script returns. For example, the script
// "Get-Process" returns a collection
// of System.Diagnostics.Process instances.
pipeline.Commands.Add("Out-String");
// execute the script
Collection<psobject /> results = pipeline.Invoke();
// close the runspace
runspace.Close();
// convert the script result into a single string
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
return stringBuilder.ToString();
}
This method is neatly done with proper comments. Also you can directly go to the link of Code Project I gave download it and start playing!
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