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November 22, 2020 00:20
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WPF databinding in Powershell with nested PS custom objects - not working
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#-------------------------------------------------------------# | |
#----Initial Declarations-------------------------------------# | |
#-------------------------------------------------------------# | |
Add-Type -AssemblyName PresentationCore, PresentationFramework | |
$Xaml = @" | |
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Width="800" Height="300" Name="khsdijy0ho5al"> | |
<Grid> | |
<Grid.RowDefinitions> | |
<RowDefinition Height="50"/> | |
<RowDefinition Height="200"/> | |
</Grid.RowDefinitions> | |
<StackPanel Orientation="Horizontal"> | |
<Button Content="Update" HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Margin="6" Grid.Row="0" Grid.Column="0" Name="updateButton"/> | |
<Button Content="Update Async" HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Margin="6" Grid.Row="0" Grid.Column="0" Name="updateButtonASync"/> | |
<Button Content="Refresh" HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Margin="6" Grid.Row="0" Grid.Column="0" Name="refreshButton"/> | |
</StackPanel> | |
<DataGrid Grid.Row="1" Name="observableDataGrid" IsReadOnly="True" Margin="6" ItemsSource="{Binding serverList}" SelectedItem="{Binding selectedServer}"> | |
</DataGrid> | |
</Grid> | |
</Window> | |
"@ | |
#-------------------------------------------------------------# | |
#----Control Event Handlers-----------------------------------# | |
#-------------------------------------------------------------# | |
#Write your code here | |
function UpdateButton | |
{ | |
$State.selectedServer.Status = (Get-Random | Out-String) | |
#$observableDataGrid.Items.Refresh() | |
} | |
function UpdateButtonAsync | |
{ | |
Async { | |
$State.selectedServer.Status = (Get-Random | Out-String) | |
} | |
} | |
function Refresh | |
{ | |
$observableDataGrid.Items.Refresh() | |
} | |
function OnLoad | |
{ | |
$results = New-Object 'System.Collections.ObjectModel.ObservableCollection[System.Object]' | |
$results.Add([PSCustomObject]@{ | |
"ServerInstance" = "MyServer" | |
"targetAccount" = "svcAccount" | |
"isEverythingDone" = $false | |
"Status" = "" | |
}) | |
$observableDataGrid.itemsSource = $results | |
} | |
#endregion | |
#-------------------------------------------------------------# | |
#----Script Execution-----------------------------------------# | |
#-------------------------------------------------------------# | |
$Window = [Windows.Markup.XamlReader]::Parse($Xaml) | |
[xml]$xml = $Xaml | |
$xml.SelectNodes("//*[@Name]") | ForEach-Object { Set-Variable -Name $_.Name -Value $Window.FindName($_.Name) } | |
$khsdijy0ho5al.Add_Loaded({OnLoad $this $_}) | |
$updateButton.Add_Click({UpdateButton $this $_}) | |
$updateButtonASync.Add_Click({UpdateButtonASync $this $_}) | |
$refreshButton.Add_Click({Refresh $this $_}) | |
$State = [PSCustomObject]@{} | |
Function Set-Binding { | |
Param($Target,$Property,$Index,$Name) | |
$Binding = New-Object System.Windows.Data.Binding | |
$Binding.Path = "["+$Index+"]" | |
$Binding.Mode = [System.Windows.Data.BindingMode]::TwoWay | |
[void]$Target.SetBinding($Property,$Binding) | |
} | |
function FillDataContext($props){ | |
For ($i=0; $i -lt $props.Length; $i++) { | |
$prop = $props[$i] | |
$DataContext.Add($DataObject."$prop") | |
$getter = [scriptblock]::Create("return `$DataContext['$i']") | |
$setter = [scriptblock]::Create("param(`$val) return `$DataContext['$i']=`$val") | |
$State | Add-Member -Name $prop -MemberType ScriptProperty -Value $getter -SecondValue $setter | |
} | |
} | |
$DataObject = ConvertFrom-Json @" | |
{ | |
"serverList" : [{ | |
"ServerInstance" : "", | |
"targetAccount" : "", | |
"isEverythingDone" : "", | |
"Status": "" | |
}], | |
"selectedServer":"" | |
} | |
"@ | |
$DataContext = New-Object System.Collections.ObjectModel.ObservableCollection[Object] | |
FillDataContext @("serverList","selectedServer") | |
$Window.DataContext = $DataContext | |
Set-Binding -Target $observableDataGrid -Property $([System.Windows.Controls.DataGrid]::ItemsSourceProperty) -Index 0 -Name "serverList" | |
Set-Binding -Target $observableDataGrid -Property $([System.Windows.Controls.DataGrid]::SelectedItemProperty) -Index 1 -Name "selectedServer" | |
$Global:SyncHash = [HashTable]::Synchronized(@{}) | |
$Jobs = [System.Collections.ArrayList]::Synchronized([System.Collections.ArrayList]::new()) | |
$initialSessionState = [initialsessionstate]::CreateDefault() | |
Function Start-RunspaceTask | |
{ | |
[CmdletBinding()] | |
Param([Parameter(Mandatory=$True,Position=0)][ScriptBlock]$ScriptBlock, | |
[Parameter(Mandatory=$True,Position=1)][PSObject[]]$ProxyVars) | |
$Runspace = [RunspaceFactory]::CreateRunspace($InitialSessionState) | |
$Runspace.ApartmentState = 'STA' | |
$Runspace.ThreadOptions = 'ReuseThread' | |
$Runspace.Open() | |
ForEach($Var in $ProxyVars){$Runspace.SessionStateProxy.SetVariable($Var.Name, $Var.Variable)} | |
$Thread = [PowerShell]::Create('NewRunspace') | |
$Thread.AddScript($ScriptBlock) | Out-Null | |
$Thread.Runspace = $Runspace | |
[Void]$Jobs.Add([PSObject]@{ PowerShell = $Thread ; Runspace = $Thread.BeginInvoke() }) | |
} | |
$JobCleanupScript = { | |
Do | |
{ | |
ForEach($Job in $Jobs) | |
{ | |
If($Job.Runspace.IsCompleted) | |
{ | |
[Void]$Job.Powershell.EndInvoke($Job.Runspace) | |
$Job.PowerShell.Runspace.Close() | |
$Job.PowerShell.Runspace.Dispose() | |
$Runspace.Powershell.Dispose() | |
$Jobs.Remove($Runspace) | |
} | |
} | |
Start-Sleep -Seconds 1 | |
} | |
While ($SyncHash.CleanupJobs) | |
} | |
Get-ChildItem Function: | Where-Object {$_.name -notlike "*:*"} | select name -ExpandProperty name | | |
ForEach-Object { | |
$Definition = Get-Content "function:$_" -ErrorAction Stop | |
$SessionStateFunction = New-Object System.Management.Automation.Runspaces.SessionStateFunctionEntry -ArgumentList "$_", $Definition | |
$InitialSessionState.Commands.Add($SessionStateFunction) | |
} | |
$Window.Add_Closed({ | |
Write-Verbose 'Halt runspace cleanup job processing' | |
$SyncHash.CleanupJobs = $False | |
}) | |
$SyncHash.CleanupJobs = $True | |
function Async($scriptBlock){ Start-RunspaceTask $scriptBlock @([PSObject]@{ Name='DataContext' ; Variable=$DataContext},[PSObject]@{Name="State"; Variable=$State})} | |
Start-RunspaceTask $JobCleanupScript @([PSObject]@{ Name='Jobs' ; Variable=$Jobs }) | |
$Window.ShowDialog() | |
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