C# CallMethodAction在MainWindow中工作,但在UserControl中不工作
如果我把代码放在主窗口中,它就会工作C# CallMethodAction在MainWindow中工作,但在UserControl中不工作,c#,.net,wpf,xaml,data-binding,C#,.net,Wpf,Xaml,Data Binding,如果我把代码放在主窗口中,它就会工作 如果我将代码放在UserControl中,然后再放在UserControl中,它就不起作用了 在主窗口中 我想问题在于绑定。如何让它工作 下一步工作: 主窗口.xaml: <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication1"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
x:Name="window" x:Class="WpfApplication1.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525" Background="Black">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDown" SourceName="rectangle">
<ei:CallMethodAction TargetObject="{Binding ElementName=userControl2}" MethodName="Ok"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<Grid>
<Rectangle x:Name="rectangle" Width="100" Height="100" Fill="White"></Rectangle>
<local:UserControl2 x:Name="userControl2"></local:UserControl2>
</Grid></Window>
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication1"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
x:Name="window" x:Class="WpfApplication1.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525" Background="Black">
<Grid>
<local:UserControl1></local:UserControl1>
</Grid></Window>
<UserControl 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:WpfApplication1"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
x:Name="userControl"
x:Class="WpfApplication1.UserControl1"
mc:Ignorable="d">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDown" SourceName="rectangle">
<ei:CallMethodAction TargetObject="{Binding ElementName=userControl2}" MethodName="Ok"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<Grid>
<Rectangle x:Name="rectangle" Width="100" Height="100" Fill="White"></Rectangle>
<local:UserControl2 x:Name="userControl2"></local:UserControl2>
</Grid></UserControl>
public partial class UserControl2 : UserControl
{
public UserControl2()
{
InitializeComponent();
}
public void Ok()
{
MessageBox.Show("a");
}
}
解决方案是将i:Interaction.Triggers移到网格下面 将UserControl1.xaml修改为下一步:
<UserControl 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:WpfApplication1"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
x:Name="userControl"
x:Class="WpfApplication1.UserControl1"
mc:Ignorable="d">
<Grid>
<Rectangle x:Name="rectangle" Width="100" Height="100" Fill="White"></Rectangle>
<local:UserControl2 x:Name="userControl2"></local:UserControl2>
</Grid>
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDown" SourceName="rectangle">
<ei:CallMethodAction TargetObject="{Binding ElementName=userControl2}" MethodName="Ok"/>
</i:EventTrigger>
</i:Interaction.Triggers></UserControl>