使用Powershell从弹出窗口中取消脚本

Question

I am writing some PowerCLI and want a user to cancel a script from a popup that's provided.

$path = "$home\Desktop\deploy.csv"
$a = new-object -comobject wscript.shell

If (Test-Path $path ) {
    $b = $a.popup("This file already exists on your Desktop and will be overwritten",0,"PowerCLI Script",1)
    }

} Else {

    echo $null >> $home\Desktop\deploy.csv
}

The popup provides a cancel and OK option, what would I need to add for the user to cancel out of the script to not overwrite the existing deploy.csv file? I found $MainForm.Close() but I am unsure how to structure the syntax and if this is the best way to achieve such a thing.

Answer 1

What you can do is evaluate the value returned by the popup which is stored in $b . If the value is 2 it means the user clicked on Cancel. Then you can simply exit.

$path = "$home\Desktop\deploy.csv"
$a = new-object -comobject wscript.shell

If (Test-Path $path ) 
{
    $b = $a.popup("This file already exists on your Desktop and will be overwritten",0,"PowerCLI Script",1)

    if ($b -eq 2)
    {
        exit
    }
} 
Else 
{
    echo $null >> $home\Desktop\deploy.csv
}

PS: I fixed a couple of issues with the code as well. Unless this is a portion of larger code, the Else statement could not have processed.