Question

Updated. I created a PowerShell 3.0 cmdlet using C#/.Net 4.0 in Visual Studio 2010. It works fine. But the cmdlet takes a while and I want to add a progress bar.

The MSDN documentation is vague on WriteProgressCommand. Here is the link: http://msdn.microsoft.com/en-us/library/microsoft.powershell.commands.writeprogresscommand.completed(v=vs.85).aspx

The code below shows what I want to do. Basically do some processing under ProcessRecord(). Then every second update the progress bar. Not sure how to display the progress bar. Help?

[System.Management.Automation.Cmdlet(System.Management.Automation.VerbsCommon.Get, "StatusBar")]
public class GetStatusBarCommand : System.Management.Automation.PSCmdlet
{
    /// <summary>
    /// Provides a record-by-record processing functionality for the cmdlet.
    /// </summary>
    protected override void ProcessRecord()
    {
        WriteProgressCommand progress = new WriteProgressCommand();

        for (int i = 0; i < 60; i++)
        {
            System.Threading.Thread.Sleep(1000);
            progress.PercentComplete = i;
        }

        progress.Completed = true;
        this.WriteObject("Done.");
        return;
    }
}

// Commented out thanks to Graimer's answer 
// [System.Management.Automation.CmdletAttribute("Write", "Progress")]
// public sealed class WriteProgressCommand : System.Management.Automation.PSCmdlet { }

Answer 1

I’ve tested cmdlet developing for 10min now and figured out how the progressbar works. I couldn’t even add that WriteProgressCommand class(but then again I’m a programming noob). What I did get to work though was the following:

protected override void ProcessRecord()
      {
         ProgressRecord myprogress = new ProgressRecord(1, "Testing", "Progress:");

          for (int i = 0; i < 100; i++)
          {
              myprogress.PercentComplete = i;
              Thread.Sleep(100);
              WriteProgress(myprogress);
          }

             WriteObject("Done.");
      }

ProgressRecord stores the progress-definition and you call a WriteProgress command to update the shell(powershell window) with the newly updated progressdata. “1” in the constructor is just an id.