add Update History

- add Computername into DataGrid (if needed)
- add toggle for Update History
- add Update History interface
- add Update Interface Toggle Logic
- add Update scan logic
- initialize Update selected / all logic
- center specific datagrid columns

functions/public/Invoke-WPFUpdateScanHistory.ps1

@@ -0,0 +1,46 @@
+function Invoke-WPFUpdateScanHistory {
+    $sync["WPFUpdateHistory"].Items.Clear()
+    Invoke-WPFRunspace -DebugPreference $DebugPreference -ScriptBlock {
+        write-host "Scanning for Windows update history..."
+        $UpdateHistory = Get-WUHistory -Last 50 -ErrorAction SilentlyContinue
+        if ($UpdateHistory) {
+            foreach ($update in $UpdateHistory) {
+                $item = New-Object PSObject -Property @{
+                    ComputerName = $update.ComputerName
+                    Result       = $update.Result
+                    Title        = $update.Title -replace '\s*\(KB\d+\)', '' -replace '\s*KB\d+\b', '' # Remove KB number from title, first in parentheses, then standalone
+                    KB           = $update.KB
+                    Date         = $update.Date
+                }
+                $Computers = $item | Select-Object -ExpandProperty ComputerName -Unique
+                $sync.form.Dispatcher.Invoke([action] {
+                    $sync["WPFUpdateHistory"].Items.Add($item)
+                    if ($item.Result -eq "Succeeded") {
+                        # does not work : $sync["WPFUpdateHistory"].Items[$sync["WPFUpdateHistory"].Items.Count - 1].Foreground = "Green"
+                        #write-host "$($item.Title) was successful"
+                    }
+                    elseif ($item.Result -eq "Failed") {
+                        # does not work : $sync["WPFUpdateHistory"].Items[$sync["WPFUpdateHistory"].Items.Count - 1].Foreground = "Red"
+                        #write-host "$($item.Title) failed"
+                    }
+                })
+            }
+            write-host "Found $($UpdateHistory.Count) updates."
+            $sync.form.Dispatcher.Invoke([action] {
+                if ($Computers.Count -gt 1) {
+                    $sync["WPFUpdateHistory"].Columns[0].Visibility = "Visible"
+                }
+                else {
+                    Write-Debug "Hiding ComputerName column, only $item.ComputerName"
+                    $sync["WPFUpdateHistory"].Columns[0].Visibility = "Collapsed"
+                }
+            })
+        }
+        else {
+            $sync.form.Dispatcher.Invoke([action] {
+                $sync["WPFUpdateHistory"].Items.Clear()
+            })
+            Write-Host "No update history available."
+        }
+    }
+}