wpf 该名称在命名空间“clr-namespace:”中不存在
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The name does not exist in the namespace "clr-namespace:"
提问by Krowi
This is my MainWindowViewModel.vb
这是我的 MainWindowViewModel.vb
Public Class MainWindowViewModel
Inherits ViewModelBase
Public Sub New()
End Sub
Private _test As String = "Success"
Public Property Test() As String
Get
Return _test
End Get
Set(ByVal value As String)
_test = value
RaisePropertyChanged()
End Set
End Property
End Class
This is my MainWindow.xaml
这是我的 MainWindow.xaml
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Koala"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:MainWindowViewModel x:Key="MainWindowViewModelDataSource" d:IsDataSource="True"/>
</Window.Resources>
<Grid DataContext="{Binding Source={StaticResource MainWindowViewModelDataSource}}">
<TextBox HorizontalAlignment="Left" Height="23" Margin="156,103,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" Text="{Binding Test}"/>
</Grid>
</Window>
And this is the error I get:
这是我得到的错误：
Error 1 The name "MainWindowViewModel" does not exist in the namespace "clr-namespace:Koala". \psf\Dropbox\Programming\Windows\Koala\Koala\MainWindow.xaml 7 3 Koala
I can add a reference to the namespace Koala in the Window tag without problems. When I type <local:, I get the option to use the MainWindowViewModeltag. Whenever I add the x:Keyor not, from that moment the error occurs. (Re)building doesn't work, restarting VS2012 doesn't work. I searched dozens of similar problems but it I can't find a fix for mine.
我可以毫无问题地在 Window 标记中添加对命名空间 Koala 的引用。当我输入时<local:，我可以选择使用MainWindowViewModel标签。每当我添加x:Key或不添加时，从那一刻起就会发生错误。（重新）构建不起作用，重新启动 VS2012 不起作用。我搜索了数十个类似的问题，但找不到适合我的解决方案。
I tried to add the reference through Blend and VS2012 but neither of them work. The odd thing is that I'm able to start the debug mode and see my form on the screen. Also, Successappears in the TextBox.
我尝试通过 Blend 和 VS2012 添加引用，但它们都不起作用。奇怪的是，我能够启动调试模式并在屏幕上看到我的表单。此外，Success出现在TextBox.
采纳答案by safetyOtter
Wrap your MainWindowViewModel class in
将您的 MainWindowViewModel 类包装在
Namespace ViewModels
Public Class MainWindowViewModel
Inherits ViewModelBase
...
End Class
End Namespace
And then add a new namespace to your window:
然后在你的窗口中添加一个新的命名空间：
xmlns:vm="clr-namespace:Koala.ViewModels"
And use the vm prefix instead of local in your resources declaration.
并在资源声明中使用 vm 前缀而不是 local。
回答by resp78
I had a similar problem with two UserControls present in two different dlls. I resolved the issue by adding assembly reference to the xaml like below
我在两个不同的 dll 中存在两个 UserControl 时遇到了类似的问题。我通过向 xaml 添加程序集引用解决了这个问题，如下所示
<Window x:Class="View.MainWindowView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:v1="clr-namespace:View1;assembly=MyAssemblyName1"
xmlns:v2="clr-namespace:View2;assembly=MyAssemblyName2"
Title="MainWindow" Height="350" Width="525">
<Grid>
<v1:UserControl1/>
<v2:UserControl2/>
</Grid>
</Window>
My project is a .Net4.5 project with two dlls containing two UserControls and a Main WPF application
我的项目是一个 .Net4.5 项目，其中有两个 dll，其中包含两个 UserControl 和一个 Main WPF 应用程序
Please note the addition
请注意添加
assembly=MyAssemblyName1
