Simple WPF dashboard script with functions mapped to buttons. Uses command pattern to map button clicks to PowerShell script blocks.

Posh_Dashboard.ps1

<# 
   Simple WPF dashboard script with functions mapped to buttons.
   Uses command pattern to map button clicks to PowerShell script
   blocks.


   How it kinda works:

   The WPF UI for PowerShell idea I got from here:
   https://foxdeploy.com/2015/04/16/part-ii-deploying-powershell-guis-in-minutes-using-visual-studio/

   Really great blog post*, I suggest you read it. The method for
   rendering the Xaml markup into a window was taken from there
   but using the command pattern to populate the buttons is novel,
   this is done by loading action objects into the $actions list.

   $actions is a list of objects that have 3 properties:
   name : String, name of operation to display on button
   function : ScriptBlock, function which will be called
   args : object[], list of arguments which are passed to 'function'

   These effectively become closures which are then associated
   to the click handler for buttons which are added to a stack
   panel in the GUI. This snippet is responsible for wiring up
   the click handler to the function call:
   
   $btn.Add_Click({ 
    $WPFConsoleText.Text = $a.function.Invoke($a.args) | Out-String 
    })

   In english: when clicked, run this script block that replaces
   the text of a texbox element with the string output of the function
   $a.function when passing in the arguments $a.args. 

   Using this method, the function is decoupled from the UI element
   and additional buttons can be added to the UI by adding function
   objects to the $actions list.

   I hope it's useful.


   *Sections with a ~~ in the heading are derived from the blog post


        - Sean McArdle, August 2016
#>

#==================================#
#        Tunable Variables         #
#==================================#
 $_servers = @(
"mcardletech.com"
)

$_services = @(
"ews",
"eap",
"filebeat"
)

if (-not $_creds) {
    $_creds = $(Get-Credential -UserName "Domain\" -Message "Admin credentials")
}

if (-not $_creds) {
    Write-Warning "Will not continue without explicit credentials!"
    Exit 1
}

#==================================#
#  ~~        UI Markup             #
#==================================#
$inputXML = @"
<Window x:Class="JbossDashboard.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:local="clr-namespace:JbossDashboard"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        Title="Posh Dashboard"
        Width="930"
        Height="500"
        mc:Ignorable="d">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="300" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>

        <Grid Grid.Column="0">
            <Grid.RowDefinitions>
                <RowDefinition Height="48" />
                <RowDefinition MaxHeight="200" />
                <RowDefinition />
            </Grid.RowDefinitions>
            <Label x:Name="UserName"
                   Grid.Row="0"
                   HorizontalAlignment="Center"
                   VerticalAlignment="Center" />
            <Grid Grid.Row="1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition />
                    <ColumnDefinition />
                </Grid.ColumnDefinitions>
                <Label Grid.Column="0"
                       HorizontalAlignment="Center"
                       VerticalAlignment="Top">
                    Servers
                </Label>
                <ListBox x:Name="ServerList"
                         Grid.Column="0"
                         Margin="2,20,2,0" />
                <Label Grid.Column="1"
                       HorizontalAlignment="Center"
                       VerticalAlignment="Top">
                    Services
                </Label>
                <ListBox x:Name="ServiceList"
                         Grid.Column="1"
                         Margin="2,20,2,0" />
            </Grid>

            <StackPanel x:Name="ButtonPanel"
                        Grid.Row="2"
                        Margin="2,4" />
        </Grid>

        <TextBox x:Name="ConsoleText"
                 Grid.Column="1"
                 Margin="2,4"
                 Background="#FF012456"
                 FontFamily="Lucida Console"
                 FontSize="12"
                 Foreground="White"
                 IsReadOnly="True" />
    </Grid>
</Window>
"@       
 
$inputXML = $inputXML -replace 'mc:Ignorable="d"','' -replace "x:N",'N'  -replace '^<Win.*', '<Window'
 
[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')
[xml]$XAML = $inputXML
#Read XAML
 
    $reader=(New-Object System.Xml.XmlNodeReader $xaml)
  try{$Form=[Windows.Markup.XamlReader]::Load( $reader )}
catch{Write-Host "Unable to load Windows.Markup.XamlReader. Double-check syntax and ensure .net is installed."}
 
#==================================================#
#  ~~     Store Form Objects In PowerShell         #
#==================================================#
 
$xaml.SelectNodes("//*[@Name]") | %{Set-Variable -Name "WPF$($_.Name)" -Value $Form.FindName($_.Name)}
 
Function Get-FormVariables{
if ($global:ReadmeDisplay -ne $true){Write-host "If you need to reference this display again, run Get-FormVariables" -ForegroundColor Yellow;$global:ReadmeDisplay=$true}
write-host "Found the following interactable elements from our form" -ForegroundColor Cyan
get-variable WPF*
}
 
Get-FormVariables


#==================================================#
#               Setup UI Elements                  #
#==================================================#

# Populate lists
$_servers | % { $WPFServerList.Items.Add($_) } 
$_services | % { $WPFServiceList.Items.Add($_) } 

# Show user name for reference
$WPFUserName.Content = "User: $($_creds.UserName.Replace("_","__"))"


#==================================================#
#       Setup functions as command objects         #
#==================================================#

<# $action is a list of objects that have 3 properties:
   name : String, name of operation to display on button
   function : ScriptBlock, function which will be called
   args : object[], list of arguments which are passed to 'function'
#>
$actions = @()

# Function for checking specified services on servers
$actions += New-Object PSObject -Property @{
    name = "Check Services"
    function = {
        param ($credentials, $servers, $services)

        foreach ($s in $local:servers) {

            $svc = Invoke-Command -ComputerName $s -Credential $credentials -ScriptBlock {
                Get-Service
            } | ? { if (-not $local:services) { $true }; $local:services.Contains($_.Name.ToLower()) }
    
            $svc | FT -a
        }
    };
    args = @($_creds, $_servers, $_services);
}

# Function to roll the "BlackBox" perfmon collector set log
$actions += New-Object PSObject -Property @{
    name = "Roll Perflog";
    function = {
        param ($credentials, $servers)

        foreach ($s in $local:servers) {

            $out = Invoke-Command -ComputerName $s -Credential $credentials -ScriptBlock {
                logman.exe
                logman.exe stop BlackBox
                logman.exe start BlackBox
            }
    
            Write-Host "`n$s" -ForegroundColor Green
            $out
        }
    }
    args = @($_creds, $_servers)
}

# Restart filebeat service to ensure it's read from log files
$actions += New-Object PSObject -Property @{
    name = "Restart Filebeat";
    function = {
        param ($credentials, $servers)
    
        foreach ($s in $local:servers) {

            $svc = Invoke-Command -ComputerName $s -Credential $credentials -ScriptBlock {
                Restart-Service filebeat
                Get-Service filebeat
            }
    
            $svc | FT
        }
    };
    args = @($_creds, $_servers)
}


#========================================================#
#         Wire up functiosn to button clicks and         #
#               add buttons to stackpanel                #
#========================================================#
$actions_ht = @{}  # needed so actions can be referenced by name
foreach ($a in $actions) {
    $actions_ht.Add($a.name, $a)
    
    $btn = new-object System.Windows.Controls.Button
    $btn.Content = $a.name
    $btn.Add_Click({
        $WPFConsoleText.Text = $actions_ht[$this.Content].function.Invoke($actions_ht[$this.Content].args) | Out-String
    })
    $btn.Height = 36

    $WPFButtonPanel.AddChild($btn)
}

# Show form
$Form.ShowDialog() | out-null