powershell winforms function output to textbox - winforms

Question

I am looking for some assistance with a powershell GUI I am building. I have a function that polls the bandwidth of a remote machine. I am trying to figure out how to get it to output to a textbox. What I currently get back just running this function by itself is below. I would like just the value to display in the textbox
InstanceName value
------------ -----
intel[r] i350 gigabit network connection 11.85
Also the last line in the function starts the loop process (Start-Monitoring) and runs every 10 seconds. I have other functions in my powershell GUI and with the Start-Monitoring outside of the function brackets, it does not work correctly. I am assuming that taking the Start-Monitoring at the bottom out and attaching it to a textbox would fix this
Function Start-Monitoring
{
$Username = 'domain\user'
$Password = 'password'
$pass = ConvertTo-SecureString -AsPlainText $Password -Force
$SecureString = $pass
# Uses your password securely
$MySecureCreds = New-Object -TypeName
System.Management.Automation.PSCredential -ArgumentList $Username, $SecureString
While ($true)
{
# Do things lots
Invoke-command {Get-Counter -Counter "\Network Interface(intel[r] i350 gigabit network connection)\Bytes Received/sec" -sampleinterval 6 |select -exp countersamples|ft -a instancename,#{l="value";e={[math]::round($_.cookedvalue/.1MB,2)}}} -Credential $MySecureCreds -Verbose -ComputerName ipaddress
# Add a pause so the loop doesn't run super fast and use lots of CPU
Start-Sleep 10
}
}
Start-Monitoring
This is the textbox I built for it
#BandTextBox
#
$BandTextBox.Location = '175, 75'
$BandTextBox.Name = 'BandTextBox'
$BandTextBox.Size = '40, 20'
$BandTextBox.TabIndex = 4
$BandTextBox.Text = ''
#
Any help is greatly appreciated!

Answer 1

Save the out put in a variable and update the text box.
Function Start-Monitoring
{
$Username = 'domain\user'
$Password = 'password'
$pass = ConvertTo-SecureString -AsPlainText $Password -Force
$SecureString = $pass
# Uses your password securely
$MySecureCreds = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $Username, $SecureString
While ($true) {
# Do things lots
Invoke-command {Get-Counter -Counter "\Network Interface(intel[r] i350 gigabit network connection)\Bytes Received/sec" -sampleinterval 6 |select -exp countersamples|ft -a instancename,#{l="value";e={[math]::round($_.cookedvalue/.1MB,2)}}} -Credential $MySecureCreds -Verbose -ComputerName ipaddress
# Add a pause so the loop doesn't run super fast and use lots of CPU
Start-Sleep 10
}
}
$Output = Start-Monitoring
$BandTextBox.Location = '175, 75'
$Ban1dTextBox.Name = 'BandTextBox'
$BandTextBox.Size = '40, 20'
$BandTextBox.TabIndex = 4
$BandTextBox.Text = $Output.Value