Question

当我尝试加载视图（即MainWindow.xaml）时，发生未处理的异常。仅当项目代码在后面运行时，才会发生这种情况。否则，它将正常工作。请帮忙。以下是异常详细信息。

此处的屏幕截图：Screenshot

System.ArgumentNullException 值不能为空。参数名称：remoteValues Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalNotifyingEnumerable 2..ctor(IRemoteNotifyingEnumerable 1 remoteValues，Func`2转换器）在Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerView.Microsoft.VisualStudio.DesignTools.DesignerContract.IDesignerView.get_RelatedDocumentPaths（）在Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo（CancellationToken cancelToken）

我尝试单击“单击此处以禁用项目代码并重新加载设计器”。当我这样做时，它起作用。但是，当我启用项目代码时，也会出现相同的异常。

Mainwindow.xaml：

<Window x:Class="QCFilterSaver.View.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"
        Style="{DynamicResource MetroStyle}"
        xmlns:view="clr-namespace:QCFilterSaver.View"
        mc:Ignorable="d"
        Title="QC Filter Saver" Height="520" Width="1200" WindowStartupLocation="CenterScreen">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Themes/ExpressionDark.xaml"/>
                <ResourceDictionary Source="/Themes/MetroDark.MSControls.Core.Implicit.xaml"/>
                <ResourceDictionary Source="/Themes/MetroDark.MSControls.Toolkit.Implicit.xaml"/>
                <ResourceDictionary Source="/Controls\DataGridStyleDictionary.xaml"/>
                <ResourceDictionary Source="/MainDataTemplates.xaml"/>
                <ResourceDictionary Source="/Controls/Styles/LoadingArcsRing.xaml"/>
                <ResourceDictionary Source="/Controls/Styles/LoadingThreeDots.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

    <Grid>
        <view:FSView x:Name="FSView" HorizontalContentAlignment="Stretch"/>
    </Grid>
</Window>


FSView.xaml:

<UserControl x:Class="QCFilterSaver.View.FSView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:QCFilterSaver.ViewModels"
             mc:Ignorable="d" 
             d:DesignHeight="520" d:DesignWidth="1200">

    <UserControl.DataContext>
        <local:FSViewModel/>
    </UserControl.DataContext>  
    <UserControl.Resources>
        <Style TargetType="{x:Type TextBox}">
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="BorderBrush" Value="#a70711"></Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </UserControl.Resources>  
    <Grid>
<!--my properties and bindings here-->
</Grid>
</UserControl>

设计人员应该自动加载，没有例外。

当项目代码落后时，Xaml Designer会引发异常

0 个答案: