wpf - 使用 powershell 显示一个小 wpf 表单

Question

我尝试显示在 Visual Studio 2019(应用程序 WPF .NET 框架项目)上创建的一个小 XAML 表单。但它不起作用我有两个错误:

Line |
  25 |  $MainForm = [Windows.Markup.XamlReader]::Load($Reader)
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Exception calling "Load" with "1" argument(s): "Cannot set unknown member  '{http://schemas.openxmlformats.org/markup-compatibility/2006}Ignorable'."


Line |
  30 |  $MainForm.ShowDialog() | Out-Null
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | You cannot call a method on a null-valued expression.

请问有解决办法吗？这是我的 powershell 文件 .ps1 上的代码，我已在我的 powershell 文件中添加了 XAML 代码:

Add-Type -AssemblyName PresentationFramework
Add-Type -AssemblyName System.Windows.Forms

[XML]$XAML =
@'
<Window x:Class="WpfApp5.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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp5"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid/>
</Window>
'@


$XAML.Window.RemoveAttribute("x:Class")
$Reader = New-Object System.Xml.XmlNodeReader $XAML
$MainForm = [Windows.Markup.XamlReader]::Load($Reader)
$MainForm.ShowDialog() | Out-Null

Answer 1

我手动删除了这一行，现在它可以工作了:

mc:Ignorable="d"

在某些网站中，他们有此代码来自动删除 xaml 代码。这是代码:

$inputXAMLClean = $inputXAML -replace 'mc:Ignorable="d"','' -replace "x:N",'N' -replace 'x:Class=".*?"','' -replace 'd:DesignHeight="\d*?"','' -replace 'd:DesignWidth="\d*?"','



But when I try to add the code:
$inputXAMLClean = $inputXAML -replace 'mc:Ignorable="d"',''

 I have the error:

Line |
  31 |  $Reader = New-Object System.Xml.XmlNodeReader $XAML1
     |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Cannot convert argument "0", with value: "System.Xml.XmlDocument", for "XmlNodeReader" to type "System.Xml.XmlNode": "Cannot convert the "System.Xml.XmlDocument" value
     | of type "System.String" to type "System.Xml.XmlNode"."



Here is the good code,it works:


Add-Type -AssemblyName PresentationFramework
Add-Type -AssemblyName System.Windows.Forms

[XML]$XAML =
@'
<Window x:Class="WpfApp5.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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp5"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Label Content="Label" HorizontalAlignment="Left" Margin="280,179,0,0" VerticalAlignment="Top"/>
        <Button Content="Button" HorizontalAlignment="Left" Margin="457,136,0,0" VerticalAlignment="Top" Width="75"/>
    </Grid>
</Window>

'@


$XAML.Window.RemoveAttribute("x:Class")
$XAML.Window.RemoveAttribute("mc:Ignorable")
$Reader = New-Object System.Xml.XmlNodeReader $XAML
$MainForm = [Windows.Markup.XamlReader]::Load($Reader)
$MainForm.ShowDialog() | Out-Null