wpf 资源无法解析
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Resource could not be resolved
提问by Notur
I got a error "The resource "ComponentTypeToStringConverter could not be resolved" Can someone tell me what am I doing wrong?
我收到错误消息“资源“无法解析 ComponentTypeToStringConverter” 谁能告诉我我做错了什么？
I've got this combo box:
我有这个组合框：
<ComboBox SelectedItem="{Binding PcComponent.ComponentTypeName}" Grid.Column="1" Grid.Row="2" Grid.ColumnSpan="2">
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Converter={StaticResource ComponentTypeToStringConverter}}"/> <!-- HERE I got a error The resource "ComponentTypeToStringConverter could not be resolved -->
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
Resource:
资源：
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:PcConfigurator.Converters">
<c:ComponentTypeToStringConverter x:Key="ComponentTypeToStringConverter"/>
</ResourceDictionary>
Converter (namespace PcConfigurator.Converters):
转换器（命名空间 PcConfigurator.Converters）：
public class ComponentTypeToStringConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (!(value is ComponentType)) { return null; }
ComponentType type = (ComponentType)value;
switch (type)
{
//Do something
}
throw new InvalidOperationException("Enum value is unknown");
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotSupportedException();
}
}
回答by 123 456 789 0
In design time. Your resources are not yet compiled and the current XAMLfile that you have where it has the ComboBoxcan't see the ResourceDictionary.
在设计时。您的资源尚未编译，并且XAML您拥有的当前文件ComboBox无法看到ResourceDictionary.
Assuming your resources is defined in App.xamlthen you should have no problems with it when you run it in runtime as it'll be able to find the key.
假设你的资源是在 中定义的，App.xaml那么当你在运行时运行它时你应该没有问题，因为它能够找到key.
If you want to get rid of the error in design timethen what you can do is on your XAMLfile where the ComboBoxlives, you can add the ResourceDictioanryso that it'll be able to find it.
如果您想摆脱设计时的错误，那么您可以做的是在您的XAML文件中存在的ComboBox地方，您可以添加ResourceDictioanry以便它能够找到它。
Assuming this is a Windowand you have ResourceDictionarythat is not defined in the App.xamlbut as a separate file
假设这是一个Window并且您ResourceDictionary没有在该App.xaml文件中定义它，而是将其定义为一个单独的文件
<Window.Resources>
<ResourceDictionary Source=""/>
</Window.Resources>
