我创建了一个非常简单的用户控件 ImageButton
<UserControl x:Class="SampleApp.Controls.ImageButton"
Name="ImageButtonControl"
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"
d:DesignHeight="300"
d:DesignWidth="300"
mc:Ignorable="d">
<Button>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="1*" />
<RowDefinition Height="6*" />
<RowDefinition Height="2*" />
<RowDefinition Height="1*" />
</Grid.RowDefinitions>
<Image Grid.Row="1" Source="{Binding ElementName=ImageButtonControl, Path=Image}" VerticalAlignment="Stretch" HorizontalAlignment="Center" />
<TextBlock Grid.Row="2" Text="{Binding ElementName=ImageButtonControl, Path=Text}" VerticalAlignment="Stretch" HorizontalAlignment="Center" />
</Grid>
</Button>
</UserControl>
后面有代码:
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace SampleApp.Controls
{
/// <summary>
/// Interaction logic for ImageButton.xaml
/// </summary>
public partial class ImageButton : UserControl
{
public ImageButton()
{
InitializeComponent();
}
public string Text
{
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
public static readonly DependencyProperty TextProperty =
DependencyProperty.Register("Text", typeof(string), typeof(ImageButton), new UIPropertyMetadata(""));
public ImageSource Image
{
get { return (ImageSource)GetValue(ImageProperty); }
set { SetValue(ImageProperty, value); }
}
public static readonly DependencyProperty ImageProperty =
DependencyProperty.Register("Image", typeof(ImageSource), typeof(ImageButton), new UIPropertyMetadata(null));
}
}
现在我想在我的小示例应用程序中使用它
xmlns:controls="clr-namespace:SampleApp.Controls"
<controls:ImageButton Grid.Row="1"
Grid.Column="1"
Margin="2"
Image="/Images/link.png"
Text="DoSomething">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<cal:ActionMessage MethodName="DoSomething" />
</i:EventTrigger>
</i:Interaction.Triggers>
</controls:ImageButton>
如果我给它 ax:Name,比如
<controls:ImageButton x:Name="DoSomething"
例如 DoSomethingDoSomething
显示视图时直接调用具有该名称的方法,即当我激活包含该按钮的视图模型时,就像我单击按钮一样(如果它是普通按钮而不是用户控件,它将以这种方式工作),但按钮单击处理程序永远不会在单击时调用。
现在我尝试添加一个 ActionMessage ,如上所示,但它也不起作用......
这里有什么问题?