WPF + XAML + DataGrid + Powershell 2.0

Question

I'm trying to put a data grid in a WPF. Simple enough in Powershell.. But when i run the code in Powershell 2.0, it can't find gives me errors.

Sample code:

Add-Type -AssemblyName PresentationFramework

$xaml = [xml] @"
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="My window" Height="300" Width="300">
<DockPanel>
    <Button x:Name="okButton" Content="OK" DockPanel.Dock="Bottom" />
    <DataGrid x:Name="DataGrid" DockPanel.Dock="Top"/>
</DockPanel>
</Window>
"@

$reader = New-Object System.Xml.XmlNodeReader $xaml
$form = [Windows.Markup.XamlReader]::Load($reader)

$okButton = $form.FindName("okButton")

$okButton.add_Click({ $form.Close() })

$form.WindowStartupLocation = "CenterScreen"
$form.ShowDialog();

If you remove this line, everything work fine:

<DataGrid x:Name="DataGrid" DockPanel.Dock="Top"/>

Anyone has any suggestions?

Error i get in Powershell 2.0:

Exception calling "Load" with "1" argument(s): "The tag 'DataGrid' does not exist in XML namespace 'http://schemas.microsoft.com/winfx /2006/xaml/presentation'. Line '0' Position '0'." At line:15 char:42 + $form = [Windows.Markup.XamlReader]::Load <<<< ($reader) + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : DotNetMethodException

What exact errors do you receive? 2 possible options from top of my head: different .net version, or additional references load required, or both. — Mike Makarov
Works fine in PS 4.0, .NET 4.5. What version of .NET do you have? — Jan Chrbolka
I know it does.. The question asks why doesn't it work in PS 2.0.. I have an environment that is PS 2.0 only.. :/ — Marc Kellerman
No need to get all excited ;) All I was trying to say was, that the error seems specific to version 2 of PowerShell. I can also confirm that version of .NET does not mater. — Jan Chrbolka

Jan Chrbolka Jan Chrbolka · Accepted Answer · 2015-05-04T03:28:15

By default PowerShell 2.0 will use .NET framework 2.0. There is no DataGrid in .NET v 2.0. Type :

[environment]::Version

If you get this, or something else starting with 2...

Major  Minor  Build  Revision
-----  -----  -----  --------
2      0      50727  7905

Your PowerShell session is using NET 2.0. How to "Enable .Net 4.0 access from PowerShell V2"?

EDIT:

To fix this on PS 2.0 ....

Create files C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe.config and C:\Windows\System32\WindowsPowerShell\v1.0\powershell_ise.exe.config with the following content:

<?xml version="1.0" encoding="utf-8" ?> 
<configuration> 
    <startup useLegacyV2RuntimeActivationPolicy="true"> 
        <supportedRuntime version="v4.0" />    
    </startup> 
</configuration>

After this, you can load .NET 4 run-times:

Add-Type -Path "C:\Windows\Microsoft.NET\Framework\v4.0.30319\WPF\PresentationFramework.dll"

assuming you have .NET 4 loaded.

WPF + XAML + DataGrid + Powershell 2.0

1 Answers