Question

我打算通过按钮设置CalibrationGridControl的状态。为此，CalibrationGridControl用户控件必须具有x：Name（在设置GoToState行为时，Blend甚至为我添加了一个。问题是，一旦添加x：Name =“ calibrationGridControl”，我就会收到以下编译错误。

错误CS0426类型名称“ ViewModel”在类型“ TeachpendantControl”中不存在TeachPendantControl C：\ GitRepos \ SolutionName \ TheWPFControl \ Views \ HandeyeCalibration \ HandeyeCalibrationView.xaml 150 38构建活动编译器

下面的UserControl HandeyeCalibrationView是一个视图，将显示在“ TheWPFControl”的ContentControl内部。 WPFControl和HandyeCalibration.xaml都在同一项目中（WPF控件库）。下面是出现错误的HandeyeCalibration.xaml文件的重要部分。

<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:TeachpendantControl.ViewModel"
xmlns:local="clr-namespace:TeachpendantControl.Views"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
xmlns:b="clr-namespace:Wpf.Behaviours"
xmlns:HandeyeCalibration="clr-namespace:TeachpendantControl.ViewModel.H"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
x:Class="TeachpendantControl.Views.HandeyeCalibrationView" 
mc:Ignorable="d"  
d:DataContext ="{d:DesignInstance {x:Type vm:HandeyeCalibrationViewModel}, 
IsDesignTimeCreatable=True}" 
Height="111.221" 
Width="276.813"
>
<UserControl.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="../../ResourceDictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</UserControl.Resources>
<UserControl.DataContext>
    <Binding Mode="OneWay" 
             Path="HandeyeCalibrationViewModel" 
             Source="{StaticResource Locator2}"/>
</UserControl.DataContext>
 <Grid> 
 <UserControl>
...

          <HandeyeCalibration:CalibrationGridControl 
            x:Name="calibrationGridControl"                                             
            HorizontalAlignment="Left" 
            Margin="0" 
            VerticalAlignment="Top" 
            Height="106" 
            Width="106"                
            Background="#FF747474"/>    
     <Button Command="{Binding AddCommand}" 
           Content="{Binding AddText, UpdateSourceTrigger=PropertyChanged}" 
           Margin="0,0,5,0">
              <i:Interaction.Triggers>
                 <i:EventTrigger EventName="Click">
                   <ei:GoToStateAction TargetName="calibrationGridControl" 
                      StateName="{Binding NextPositionState, Mode=OneWay}"/>
                   </i:EventTrigger>
              </i:Interaction.Triggers>                   
     </Button>
</Grid>
</UserControl>

如果仅删除x：Name =“ calibrationGridControl”行，则所有编译都可以。可能是什么错误导致此奇怪的错误消息？

我对CalibrationGridControl有一些疑问。如果我只是在将x：Name添加到另一个用户控件时将其删除，则所有内容都会编译。 CalibrationGridControl的XAML如下所示。

<UserControl x:Class="TeachpendantControl.ViewModel.H.CalibrationGridControl"
             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:TeachpendantControl.ViewModel"
             xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity;assembly=System.Windows.Interactivity"             
             xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.Resources>
        <SolidColorBrush x:Key="CalibrationGridCrossBrush" Color="#FFFFDF00"/>
        <SolidColorBrush x:Key="CalibrationGridPositionTrainedFillBrush" Color="#FFFFDF00"/>
        <SolidColorBrush x:Key="CalibrationGridPositionFillBrush" Color="Black"/>
    </UserControl.Resources>
    <Grid>        
        ...            
    </Grid>
</UserControl>

Answer 1

TeachpendantControl显然是类型和的名称空间。

您应该更改控件的名称或更改名称空间的名称，以避免命名冲突。

WPF X：Name导致类型名称“ ViewModel”编译错误

1 个答案: