A button handler is created using custom webpart & the below code is executed to fire your PowerShell script.Ref below code-
//scriptText parameter is the script which requires to pass
private string RunScript(string scriptText)
{
// create PowerShell runspace
Runspace runspace = RunspaceFactory.CreateRunspace();
// open it
runspace.Open();
// create a pipeline and feed 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
pipeline.Commands.Add("Out-String");
// execute the script
Collection
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();
}