Powershell: Array of Buttons with Link - Stack Overflow

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How can I assign a link to each button? I can't manged it... I dont speak english well. Sorry for the translation...

$ButtonName =@('Option One', 'Option Two', 'Option Three')
$i = 0
$ButtonName |
foreach{
    $CurrentButton                  = $null
    $CurrentButton                  = New-Object System.Windows.Forms.Button
    $CurrentButton.Location         = "$(10+70*$i),35"
    $CurrentButton.width            = 60
    $CurrentButton.height           = 60
    $CurrentButton.Image            = [System.Drawing.Image]::FromFile("c:\script\" + $ButtonName[$i] + ".jpg")
    
    $CurrentButton.Add_Click({Start-Process -FilePath "c:\script\" + $ButtonName[$i] + ".lnk"})
    
    $i++
    $Script.Controls.Add($CurrentButton)
    }

$CurrentButton.Add_Click({Start-Process -FilePath "c:\script" + $ButtonName[$i] + ".lnk"}) does not work...

How can I assign a link to each button? I can't manged it... I dont speak english well. Sorry for the translation...

$ButtonName =@('Option One', 'Option Two', 'Option Three')
$i = 0
$ButtonName |
foreach{
    $CurrentButton                  = $null
    $CurrentButton                  = New-Object System.Windows.Forms.Button
    $CurrentButton.Location         = "$(10+70*$i),35"
    $CurrentButton.width            = 60
    $CurrentButton.height           = 60
    $CurrentButton.Image            = [System.Drawing.Image]::FromFile("c:\script\" + $ButtonName[$i] + ".jpg")
    
    $CurrentButton.Add_Click({Start-Process -FilePath "c:\script\" + $ButtonName[$i] + ".lnk"})
    
    $i++
    $Script.Controls.Add($CurrentButton)
    }

$CurrentButton.Add_Click({Start-Process -FilePath "c:\script" + $ButtonName[$i] + ".lnk"}) does not work...

• arrays
• powershell
• button
• start-process

Share Improve this question Follow edited yesterday mklement0 442k6868 gold badges707707 silver badges925925 bronze badges asked yesterday BernhardBernhard 1344 bronze badges 1

• Use the current item ($PSItrem or$_): "c:\script\$_.ps1" – iRon Commented yesterday

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1 Answer 1

Sorted by: Reset to default 2

The problem here is that the event handler doesn't "remember" the value of $i at the time it was defined. To work around this, we can close over a local variable reference:

$ButtonNames = @('Option One', 'Option Two', 'Option Three')
for($i = 0; $i -lt $ButtonNames.Count; $i++) {

    # assign value to local variable
    $ButtonName = $ButtonNames[$i]

    $CurrentButton                  = New-Object System.Windows.Forms.Button
    $CurrentButton.Location         = "$(10+70*$i),35"
    $CurrentButton.Width            = 60
    $CurrentButton.Height           = 60
    $CurrentButton.Image            = [System.Drawing.Image]::FromFile("c:\script\${ButtonName}.jpg")
    
    # after running `GetNewClosure`, the resulting scriptblock will "remember" the value of $ButtonName
    $CurrentButton.Add_Click({Invoke-Item "C:\script\${ButtonName}.lnk"}.GetNewClosure())
    
    $Script.Controls.Add($CurrentButton)
}

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