Question

我在View部分中使用了事件触发器，给出了如下代码。几乎所有绑定都适用于ViewModel类 - MainWindowViewModel，但对于方法＆＃34; CustomRibbonWindow_Loaded＆＃34;，它抛出运行时异常如：

类型＆＃39; System.ArgumentException＆＃39;的例外情况发生在Microsoft.Expression.Interactions.dll但未在用户代码中处理附加信息：找不到名为＆＃39; CustomRibbonWindow_Loaded＆＃39;对于MainWindow＆＃39;类型的对象与预期签名匹配。如果存在此异常的处理程序，则可以安全地继续该程序。

我尝试过把 TargetObject =＆＃34; {Binding ElementName = RR}＆＃34; 以及 TargetObject =＆＃34; {Binding}＆＃34; 也。但似乎都没有效果。

我在VM中的方法如下，

private void CustomRibbonWindow_Loaded()
    {
       ...
    }

请指导如何解决。

<i:Interaction.Triggers>
    <i:EventTrigger EventName="Loaded">
        <si:CallMethodAction MethodName="CustomRibbonWindow_Loaded"/>
    </i:EventTrigger>

</i:Interaction.Triggers>

MainWindow.xaml

<custom:CustomRibbonWindow x:Class="gDispatchApp.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:Fluent="clr-namespace:Fluent;assembly=Fluent"
    xmlns:custom="clr-namespace:gDispatchAppLib.Helpers.CustomUIControls;assembly=gDispatchAppLib"
    xmlns:DockUI="clr-namespace:DockingLibrary;assembly=DockingLibrary"
    xmlns:UserControls="clr-namespace:gDispatchAppLib.View.UserControls;assembly=gDispatchAppLib"
    xmlns:AppWindows="clr-namespace:gDispatchAppLib.View.AppWindows;assembly=gDispatchAppLib"
    xmlns:VM="clr-namespace:gDispatchAppLib.ViewModel.AppWindows;assembly=gDispatchAppLib"
    xmlns:VM2="clr-namespace:gDispatchAppLib.ViewModel;assembly=gDispatchAppLib"
    xmlns:PE="clr-namespace:gDispatchAppLib.ViewModel.CADQueues;assembly=gDispatchAppLib"
    xmlns:wpfHelper="clr-namespace:gDispatchAppLib.WPFHelpers;assembly=gDispatchAppLib"   
    xmlns:conv="clr-namespace:gDispatch.MvvmValidation.WPF;assembly=gDispatch.MvvmValidation"
    xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
    xmlns:si="http://schemas.microsoft.com/expression/2010/interactions"

     Title="SERIS CAD"
      MinHeight="300"
                       WindowState="Maximized" HorizontalContentAlignment="Stretch"
    FlowDirection="LeftToRight" CaptionHeight="50"
                 IsIconVisible="False" WindowStyle="SingleBorderWindow"
                       xmlns:my="clr-namespace:System;assembly=mscorlib" 
                       x:Name="RR">
<i:Interaction.Triggers>
    <i:EventTrigger EventName="Loaded">
        <si:CallMethodAction MethodName="CustomRibbonWindow_Loaded" TargetObject="{Binding ElementName=RR}"/>
    </i:EventTrigger>     
</i:Interaction.Triggers>

   ...

</custom:CustomRibbonWindow>

Answer 1

像这样订阅你的方法。

private void Window_Loaded(object sender, RoutedEventArgs e) 
// add the proper parameters
{
    // code here
}

以下是文档：Link

Answer 2

我有同样的问题。只是公开。感谢您对其他答案的评论：）

public void CustomRibbonWindow_Loaded()

WPF交互触发CallMethodAction

2 个答案: