How can this be done - powershell msgbox

Alright, i know the following can be locally on my computer to display a message box
[system.reflection.assembly]::LoadWithPartialName("system.windows.forms")
[system.windows.forms.messagebox]::Show("YOur system needs to be accesses for maintence please finish all your work")

Open in new window

but how the heck can i get it to show on remote computers? I know i can use the msg command that is built into windows but some systems don't have that function.

i'm guessing something along the lines of
[system.reflection.assembly]::LoadWithPartialName("system.windows.forms")
$creds = get-credential
.... -computername testbox -credential $cred | [show.windows.form.messagebox]::Show("message here")

Open in new window

bbimisAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Put all of the code to execute into a scriptblock, and run it with invoke-command:
invoke-command -computer testbox -script {<#code here>}

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
footechCommented:
I was thinking the same thing, but it looks like you run into an error since it's an interactive element.
There's probably some way to do this with Windows forms, I just don't know it yet.
One thing I found did work on Win7 system is to use a  combination of PowerShell Remoting and msg.exe.
$block = { msg console /time:15 "Message to user"}
Invoke-Command -ComputerName computername -ScriptBlock $block

Open in new window

0
bbimisAuthor Commented:
well wouldn't msg /server:[computername] * "message here" do the same thing ?
that works on windows 7 machines if they have the built in msg

my goal is along these lines but i can't figure out how to get the code to work.
$computer = "testpc"
Send-NetMessage "testing" -Computername $computer -Seconds 30 -VerboseMsg -Wait

Function Send-NetMessage{
<#  
.SYNOPSIS  
    Sends a message to network computers
 
.DESCRIPTION  
    Allows the administrator to send a message via a pop-up textbox to multiple computers
 
.EXAMPLE  
    Send-NetMessage "This is a test of the emergency broadcast system.  This is only a test."
 
    Sends the message to all users on the local computer.
 
.EXAMPLE  
    Send-NetMessage "Updates start in 15 minutes.  Please log off." -Computername testbox01 -Seconds 30 -VerboseMsg -Wait
 
    Sends a message to all users on Testbox01 asking them to log off.  
    The popup will appear for 30 seconds and will write verbose messages to the console. 

.EXAMPLE
    ".",$Env:Computername | Send-NetMessage "Fire in the hole!" -Verbose
    
    Pipes the computernames to Send-NetMessage and sends the message "Fire in the hole!" with verbose output
    
    VERBOSE: Sending the following message to computers with a 5 delay: Fire in the hole!
    VERBOSE: Processing .
    VERBOSE: Processing MyPC01
    VERBOSE: Message sent.
    
.EXAMPLE
    Get-ADComputer -filter * | Send-NetMessage "Updates are being installed tonight. Please log off at EOD." -Seconds 60
    
    Queries Active Directory for all computers and then notifies all users on those computers of updates.  
    Notification stays for 60 seconds or until user clicks OK.
    
.NOTES  
    Author: Rich Prescott  
    Blog: blog.richprescott.com
    Twitter: @Rich_Prescott
#>

Param(
    [Parameter(Mandatory=$True)]
    [String]$Message,
    
    [String]$Session="*",
    
    [Parameter(ValueFromPipeline=$True,ValueFromPipelineByPropertyName=$True)]
    [Alias("Name")]
    [String[]]$Computername=$env:computername,
    
    [Int]$Seconds="5",
    [Switch]$VerboseMsg,
    [Switch]$Wait
    )
    
Begin
    {
    Write-Verbose "Sending the following message to computers with a $Seconds second delay: $Message"
    }
    
Process
    {
    ForEach ($Computer in $ComputerName)
        {
        Write-Verbose "Processing $Computer"
        $cmd = "msg.exe $Session /Time:$($Seconds)"
        if ($Computername){$cmd += " /SERVER:$($Computer)"}
        if ($VerboseMsg){$cmd += " /V"}
        if ($Wait){$cmd += " /W"}
        $cmd += " $($Message)"

        Invoke-Expression $cmd
        }
    }
End
    {
    Write-Verbose "Message sent."
    }
}

Open in new window

0
footechCommented:
I believe it depends on whether you have the firewall configured to allow it (referring to whether msg /server would work or not).  It doesn't for me and I haven't tried to diagnose it.  If you have PS Remoting configured then the network communication happens over that so you don't have to worry about any additional firewall configuration.

That script is just a wrapper for msg.exe.
0
bbimisAuthor Commented:
thanks
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Powershell

From novice to tech pro — start learning today.