MahApps.Metro.SimpleChildWindow.ChildWindow的问题只能运行一次

问题描述

我遇到一个非常奇怪的问题，无法确定是什么原因造成的。

我可以创建一个Controls：MetroWindow并让一个按钮显示simpleChildWindow：ChildWindow，这可以正常工作。问题是当我退出窗口并尝试再次运行脚本时，它将不会加载XAML。我得到的错误是：

Exception calling "Load" with "1" argument(s): "Initialization of 'MahApps.Metro.SimpleChildWindow.ChildWindow' threw an exception."
At line:1 char:1
+ $syncHash.($synchash.app+"_Window") = [Windows.Markup.XamlReader]::Lo ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [],MethodInvocationException
    + FullyQualifiedErrorId : XamlParseException

我尝试了不同版本的MahApps.Metro.dll和MahApps.Metro.SimpleChildWindow.dll，但无法解决此错误。

如果我关闭PowerShell会话并再次启动该脚本，则它可以正常运行，但是在同一会话中第二次尝试运行该脚本时都将失败。

这是我正在运行的脚本：

#Create the Parent SyncHash that each runspace can access
$Global:syncHash = [hashtable]::Synchronized(@{})
$syncHash.scriptRoot = $PSScriptRoot #Pass the base directory (scriptRoot) to the runspace

#region Assemblies to Load
$assemblyList = @("PresentationFramework","PresentationCore","WindowsBase")
$assemblyList | Foreach-Object {Add-Type -AssemblyName $_}

# Mahapps Library Asemblies
Get-ChildItem ($syncHash.scriptRoot + "\assembly") -Filter "*.dll"  -File -Recurse| ForEach-Object {Add-Type -Path $_.FullName}
#endregion Assemblies

#region XAML
#Get the Main XAML from file
$xamlText = Get-Content ($syncHash.scriptRoot + "\resources\XML\TestChildForm.xaml")
$syncHash.xamlLoader = (New-Object System.Xml.XmlDocument)
$syncHash.xamlLoader.LoadXml($xamlText)

$newRunspace = [runspacefactory]::CreateRunspace()
$newRunspace.ApartmentState = "STA"
$newRunspace.ThreadOptions = "ReuseThread"
$newRunspace.open()
$newRunspace.SessionStateProxy.Setvariable("syncHash",$syncHash)

#CODE set to add to the New Runspace
$parentCODE = [PowerShell]::Create().AddScript({ 
    $syncHash.reader = (New-Object System.Xml.XmlNodeReader $syncHash.xamlLoader)
    $syncHash.Test_Window = [Windows.Markup.XamlReader]::Load( $syncHash.reader )
    $syncHash.xamlLoader.SelectNodes("//*[@*[contains(translate(name(.),'n','N'),'Name')]]") | ForEach-Object {
        #Find all of the form types and add them as members to the synchash
        $syncHash.Add($_.Name,$syncHash.Test_Window.FindName($_.Name) )
    }

    $syncHash.test_but1.Add_Click({
        $syncHash.test_child.IsOpen = $true
    })

    #Show the GUI running in newRunspace
    $syncHash.Test_Window.ShowDialog() | Out-Null
    $syncHash.Error = $Error
})

$parentCODE.Runspace = $newRunspace
$data = $parentCODE.BeginInvoke()
While ($data.IsCompleted -ne $true) {Start-Sleep 0.5}
Get-Runspace | Where-Object {$_.Id -eq $newRunspace.Id} | ForEach-Object {$_.dispose()}

位于。\ resources \ XML中的TestChildForm.xaml如下：

<Controls:MetroWindow 
    xmlns:Controls='clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro' 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:iconPacks="http://metro.mahapps.com/winfx/xaml/iconpacks"
    xmlns:simpleChildWindow="clr-namespace:MahApps.Metro.SimpleChildWindow;assembly=MahApps.Metro.SimpleChildWindow"
    Title="Test Main Window" 
    WindowStartupLocation="Manual"
    ShowInTaskbar="true" ShowMinButton="False" ShowMaxRestoreButton="False"

    SizetoContent="WidthAndHeight" AllowsTransparency="True"  ResizeMode="CanResizeWithgrip">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <ResourceDictionary Source="pack://application:,/MahApps.Metro;component/Styles/Themes/Light.Cobalt.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

    <Grid>

        <simpleChildWindow:ChildWindow Name="test_Child"
                                       CloseByEscape="False"
                                       HorizontalContentAlignment="Stretch"
                                       VerticalContentAlignment="Stretch"
                                       Padding="15"
                                       ChildWindowImage="Error"
                                       Title="TestChild 1">
            <Grid>
                <Label Content="Test Child Window"/>
            </Grid>
        </simpleChildWindow:ChildWindow>

        <Button Name="test_but1" Content="Open Child Window" Width="120" Height="40" Margin="5"/>
    </Grid>

</Controls:MetroWindow>

通过在Visual Studio中安装nuget软件包，然后将dll复制到项目中的。\ assembly文件夹中，我得到了MahApps dll。。\ assembly中包含的dll是：

ControlzEx.dll
MahApps.Metro.dll
MahApps.Metro.SimpleChildWindow.dll
Microsoft.Xaml.BehavIoUrs.dll
System.Windows.Interactivity.dll

首次运行脚本后，它将显示该窗口，单击该按钮将显示子窗口。运行脚本后检查错误没有显示任何错误。再次运行脚本后，它将引发错误。看来，所有错误均源于加载SimpleChildWindow的问题。

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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mahapps.metro powershell wpf wpf