问题描述
我正在尝试使用Material Design in XAML Toolkit在PowerShell中创建一个WPF应用程序,但我无法使用自定义命名空间中的属性。我尝试了各种方法来定义命名空间,但都给出了相同的错误:
"Exception calling "Load" with "1" argument(s): "Cannot set unknown member '{http://materialdesigninxaml.net/winfx/xaml/themes}HintAssist.Hint'.""
我有一个Visual Studio项目,其中我通过NuGet安装了Material Design Themes包,该包与相同的属性一起工作得很好,但如果我复制要在PowerShell中分析的XAML,似乎无法使其工作。
只要我尝试使用TextBox属性materialDesign:HintAssist.Hint="Name"
,它就会断开。
PowerShell代码
Import-Module "$($PSScriptRoot)MaterialDesignColors.dll"
Import-Module "$($PSScriptRoot)MaterialDesignThemes.wpf.dll"
[xml]$xaml = @"
<Window
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:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
Title="MainWindow" Width="1040" Height="495"
TextElement.Foreground="{DynamicResource MaterialDesignBody}"
Background="{DynamicResource MaterialDesignPaper}"
TextElement.FontWeight="Medium"
TextElement.FontSize="14"
FontFamily="pack://application:,,,/MaterialDesignThemes.Wpf;component/Resources/Roboto/#Roboto"
>
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Amber.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.DeepPurple.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid>
<TextBox x:Name="textBox" HorizontalAlignment="Left" Height="27" Margin="142,266,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120" materialDesign:HintAssist.Hint="Name"/>
</Grid>
</Window>
"@
$reader=(New-Object System.Xml.XmlNodeReader $xaml)
$Window=[Windows.Markup.XamlReader]::Load( $reader )
$Window.ShowDialog() | Out-Null
Visual Studio项目代码
下面是来自Visual Studio项目的代码,在该项目中,HintAssistt属性工作正常:
MainWindow.xaml:
<Window x:Class="CreatePrinterWPF.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:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
mc:Ignorable="d"
Title="MainWindow" Width="1040" Height="495"
TextElement.Foreground="{DynamicResource MaterialDesignBody}"
Background="{DynamicResource MaterialDesignPaper}"
TextElement.FontWeight="Medium"
TextElement.FontSize="14"
FontFamily="pack://application:,,,/MaterialDesignThemes.Wpf;component/Resources/Roboto/#Roboto"
>
<Grid>
<TextBox x:Name="textBox" HorizontalAlignment="Left" Height="27" Margin="142,266,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120" materialDesign:HintAssist.Hint="Name"/>
</Grid>
App.xaml:
<Application x:Class="CreatePrinterWPF.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:CreatePrinterWPF"
StartupUri="MainWindow.xaml">
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Amber.xaml" />
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.DeepPurple.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>
所需的结果是文本框有一个
faded text in it until the user enters something。
我似乎找不到任何有关使用PowerShell中已编译的库文件中的XAML命名空间的资源,如果有人能帮助我,我将不胜感激。
推荐答案
我设法解决了该问题。
如果我按如下方式定义命名空间,只要DLL文件的名称相同,它就可以工作:
xmlns:materialDesign="clr-namespace:MaterialDesignThemes.Wpf;assembly=MaterialDesignThemes.Wpf"