title: How do I return errorlevel by handling GUI using PowerShell?
body: <p>I have a GUI, the form will close automatically in 10s. But if we click the pause button, it also will close the form. I want to return the error level each process that I do. If the form closes automatically, it will return error level 10. but if we click the button pause, it will return error level 20. anyone can help, please.</p>
  
  <p>this is my code.</p>
  
  <pre><code>    function Timer_GUI {
      [System.Windows.Forms.Application]::EnableVisualStyles()
      $form1 = New-Object 'System.Windows.Forms.Form'
      $label1 = New-Object 'System.Windows.Forms.Label'
      $label2 = New-Object 'System.Windows.Forms.Label'
      $Cancel = New-Object 'System.Windows.Forms.Button'
      $timer1 = New-Object 'System.Windows.Forms.Timer'
  
      $form1_Load = { 
          $TotalTime = 10 #in seconds
              $script:StartTime = (Get-Date).AddSeconds($TotalTime)
              #Start the timer
              $timer1.Start()
      }
      $label1.Location = New-Object System.Drawing.Size(220,60)
      $label1.Size = New-Object System.Drawing.Size(500,30)
  
      $label2.Text = "The Process Will Continue in 10s"
      $label2.Location = New-Object System.Drawing.Size(140,30)
      $label2.Size = New-Object System.Drawing.Size(500,30)
  
      $form1.SuspendLayout()
      $form1.Controls.Add($label1)
      $form1.Controls.Add($label2)
      $form1.Controls.Add($Cancel)
      $form1.Width = 500
      $form1.Height = 200
      $form1.StartPosition = "CenterScreen"
      $form1.BackColor = "#e2e2e2"
      $form1.add_Load($form1_Load)
  
      $Cancel.DialogResult = 'Cancel'
      $Cancel.Location = New-Object System.Drawing.Size(350,100)
      $Cancel.Size = New-Object System.Drawing.Size(100,30)
      $Cancel.Text = "Pause"
      $Cancel.add_Click($Cancel_Click)
      $timer1.add_Tick($timer1_Tick)
      $form1.ResumeLayout()
  
  
      #Show the Form
      return $form1.ShowDialog()
      exit 100
  }
  #Call the form
  Timer_GUI | Out-Null
  </code></pre>