Monitor A Text File From Windows PowerShell In Real Time with OutPut Text Box

[jvierra]

All code in a form must be run in an event. With a job you will need to use a timer to poll the job. The output of the job will need to be parsed to eliminate the elements of the received object to get only what you need.

See the following for an explanation of how jobs can be used in a form.

http://info.sapien.com/index.php/guis/g ... sive-forms

[ramses147]

I followed and studied the link you sent me.
But I can not figure out how to adapt it to my need could you write a short example for the textbox?

[jvierra]

There is no such thing as a short example of that code.

Add a job and a timer then set the timer tick to poll the job and add it to the textbox.

Don't try to build job tracker just use the post to learn how the JobTracker is designed and then use the components you need.

[jvierra]

Here is the simplest example I can think of:

Code: [Select all] [Expand/Collapse] [Download] (Untitled.ps1)

1. $form1_Load={
2.     $timer1.Interval = 500
3.     $timer1.Start()
4. }
5.  
6. $buttonPingTracker_Click={
7.     $sb = { Get-Content d:\scripts\pinger.txt -Wait -Tail 1 }
8.     Start-Job -Name pinger -ScriptBlock $sb
9. }
10.  
11. $timer1_Tick={
12.     if($results = Receive-Job pinger -ErrorAction 0){
13.         $textbox1.Lines += $results
14.         $textbox1.Select($textbox1.Text.Length,1)
15.         $textbox1.ScrollToCaret()
16.     }
17. }
18.  
19. $form1_FormClosing=[System.Windows.Forms.FormClosingEventHandler]{
20.     Stop-Job pinger -ErrorAction 0
21.     Remove-Job pinger -ErrorAction 0
22. }

[ramses147]

I tryed with your code but i unable to show textbox content

Code: [Select all] [Expand/Collapse] [Download] (Untitled.ps1)

1. $Form1 = New-Object System.Windows.Forms.Form    
2. $Form1.Size = New-Object System.Drawing.Size(790,980)
3.  
4. $Form1.FormBorderStyle = 'FixedDialog'
5. $Form1.MaximizeBox = $false
6.  
7. $Icon = [system.drawing.icon]::ExtractAssociatedIcon($PSHOME + "\powershell.exe")
8. $Form1.Icon = $Icon
9.  
10. $Form1.Text = "Log View"
11.  
12. ############################################## OutPutBox
13.  
14. $textbox1 = New-Object System.Windows.Forms.TextBox
15. $textbox1.Location = New-Object System.Drawing.Size(20,20)
16. $textbox1.Size = New-Object System.Drawing.Size(680,900)
17. $textbox1.MultiLine = $True
18. $textbox1.ReadOnly = $True
19. $textbox1.Font = New-Object System.Drawing.Font("Calibri",11,[System.drawing.FontStyle]::Bold)
20. $textbox1.ForeColor = [Drawing.Color]::Green
21. $textbox1.ScrollBars = "Vertical"
22. $Form1.Controls.Add($textbox1)
23.  
24. $form1_Load={
25.     $timer1.Interval = 500
26.     $timer1.Start()
27. }
28.  
29. $buttonPingTracker_Click={
30.     $sb = { Get-Content C:\script\PingLog.csv -Delimiter -Wait -Tail 1 }
31.     Start-Job -Name pinger -ScriptBlock $sb
32. }
33.  
34. $timer1_Tick={
35.     if($results = Receive-Job pinger -ErrorAction 0){
36.         $textbox1.Lines += $results
37.         $textbox1.Select($textbox1.Text.Length,1)
38.         $textbox1.ScrollToCaret()
39.     }
40. }
41.  
42. $form1_FormClosing=[System.Windows.Forms.FormClosingEventHandler]{
43.     Stop-Job pinger -ErrorAction 0
44.     Remove-Job pinger -ErrorAction 0
45. }
46.  
47. $Form1.Add_Shown({$Form1.Activate()})
48. [void] $Form1.ShowDialog()

[ramses147]

With this code i can able to read the content of file, but the content doesn't update

Code: [Select all] [Expand/Collapse] [Download] (Untitled.ps1)

1. $timer1 = new-object timers.timer
2. #$form_Load={
3.     $timer1.Interval = 500
4.     $timer1.Start()
5. #}
6.  
7.  
8. $sb = { Get-Content c:\script\PingLog.csv -Wait -Tail 1 }
9. Start-Job -Name pinger -ScriptBlock $sb
10.    
11.  
12. #$timer1_Tick={
13.     if($results = Receive-Job pinger -ErrorAction 0){
14.         $outputBox.Lines += $results
15.         $outputBox.Select($outputBox.Text.Length,1)
16.         $outputBox.ScrollToCaret()
17.     }
18. #}
19.  
20.  
21. $form_FormClosing=[System.Windows.Forms.FormClosingEventHandler]{
22.     Stop-Job pinger -ErrorAction 0
23.     Remove-Job pinger -ErrorAction 0
24. }

[ramses147]

Find the problem !
With the help of Powershell Studio !
Many thanks !