XAML WPF 的绑定/引用方法
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/21708553/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Binding/Referencing Method to XAML WPF
提问by jovanMeshkov
I have this xaml
我有这个 xaml
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="clr-namespace:My.Windows"
>
<ObjectDataProvider x:Key="TitledWindow_Test" MethodName="Test" ObjectInstance={x:Type l:TitledWindow}">
<ControlTemplate x:Key="TitledWindowControlTemplateKey" x:Name="PART_ControlTemplate" TargetType="{x:Type l:TitledWindow}"
<Rectangle>
<Rectangle.Style>
<EventSetter Event="Mouse.MouseEnter" Handler="{StaticResource TitledWindow_Test}">
</Rectangle.Style>
</Rectangle>
</ControlTemplate>
</ResourceDictionary>
And my c# code:
还有我的 C# 代码：
namespace My.Windows
{
public partial class TitledWindow : Window
{
public void Test()
{
MessageBox.Show("Test");
}
}
}
The problem is that i get the following error:
问题是我收到以下错误：
Error 1
'ResourceDictionary' root element requires a x:Class attribute to support event
handlers in the XAML file. Either remove the event handler for the MouseEnter event,
or add a x:Class attribute to the root element.
错误 1
'ResourceDictionary' 根元素需要 ax:Class 属性来支持 XAML 文件中的事件处理程序。删除 MouseEnter 事件的事件处理程序，或将 ax:Class 属性添加到根元素。
回答by Rohit Vats
Well you can do that by attaching code behind to your ResourceDictionary. Few simple steps to achieve that are:
那么你可以通过将代码附加到你的 ResourceDictionary来做到这一点。实现这一目标的几个简单步骤是：
- Say ResourceDictionary file name is
CustomResources.xaml. Add another file in same directory besides your ResourceDictionary with nameCustomResources.xaml.cs. Createpartial class CustomResourcesinheriting from ResourceDictionary.
- 说 ResourceDictionary 文件名是
CustomResources.xaml. 除了名称为 ResourceDictionary 之外，在同一目录中添加另一个文件CustomResources.xaml.cs。创建partial class CustomResources继承自 ResourceDictionary。
Declare your handler for MouseEnter and code behind is ready.
为 MouseEnter 声明您的处理程序，并且后面的代码已准备就绪。
using System;
using System.Windows;
namespace WpfApplication1
{
public partial class CustomResources : ResourceDictionary
{
public void MouseEnter(object sender, EventArgs e)
{
MessageBox.Show("Test");
}
}
}
- Now, in XAML set
x:Classattribute and set handler toMouseEnter.
- 现在，在 XAML 中设置
x:Class属性并将处理程序设置为MouseEnter.
XAML :
XAML：
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="WpfApplication1.CustomResources"
xmlns:local="clr-namespace:WpfApplication1">
<ControlTemplate x:Key="TitledWindowControlTemplateKey"
x:Name="PART_ControlTemplate"
TargetType="{x:Type local:TitleWindow}">
<Rectangle>
<Rectangle.Style>
<Style TargetType="Rectangle">
<EventSetter Event="Mouse.MouseEnter" Handler="MouseEnter"/>
</Style>
</Rectangle.Style>
</Rectangle>
</ControlTemplate>
</ResourceDictionary>
回答by AlSki
The problem is that the Templateneeds to know if what it is being applied to has a MouseEnter. Unfortunately even by applying your x:Typeto the template, the xaml compiler doesn't have enough to go on.
问题是Template需要知道它所应用的内容是否具有MouseEnter. 不幸的是，即使将您的应用程序应用于x:Type模板，xaml 编译器也没有足够的能力继续下去。
I have done something similar before in getting the ResourceDictionaryto recognise the porepoties of what I'm templating to and it looks like I used a style to get around it. Full code in http://winchrome.codeplex.com/SourceControl/latest#WinChrome/UI/VS2012ResourceDictionary.xaml.
我之前做过类似的事情ResourceDictionary来识别我正在做的模板的孔隙，看起来我使用了一种风格来解决它。http://winchrome.codeplex.com/SourceControl/latest#WinChrome/UI/VS2012ResourceDictionary.xaml 中的完整代码。
<ResourceDictionary ... >
<Style x:Key="CloseButtonStyle" TargetType="{x:Type Button}" >
...
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="bd" ....>
....
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True" SourceName="bd">
<Setter Property="Background" TargetName="bd" Value="{DynamicResource {x:Static SystemColors.ControlLightLightBrushKey}}"/>
...
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" TargetName="bd">
...
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
However you want to then bind your handler to a method on your objectDataPresentervia a {StaticResource ...}which I'm not sure that you can. Instead you might be better to instead bind onto the DataContextusing a normal binding {Binding Path=...}, I think you might still be able to provide the DataContextvia the {StaticResource.. }.
但是，您想将您的处理程序绑定到您的objectDataPresentervia a上的方法{StaticResource ...}，我不确定您是否可以。相反，您最好DataContext使用普通绑定绑定到{Binding Path=...}，我认为您仍然可以DataContext通过{StaticResource.. }.
回答by Brinky
You need to add the x:class attribute and specify where the resource is, and where the event handler would be located. See Is it possible to set code behind a resource dictionary in WPF for event handling?for an example of this.
您需要添加 x:class 属性并指定资源的位置以及事件处理程序的位置。请参阅是否可以在 WPF 中的资源字典后面设置代码以进行事件处理？举个例子。
