我有一个继承自ComboBox的类。如果我在我的控件中使用标准的ComboBox类,则以下事件处理程序可以正常工作:
private void SelectionChanged(object sender, RoutedEventArgs e)
如果我将类型更改为MyComboBox,则启动应用程序会失败,并显示以下消息:
无法绑定到目标方法,因为其签名或安全透明度与委托类型的方式不兼容。
现在我需要将签名更改为
SelectionChanged(object sender, SelectionChangedEventArgs e)
是什么给出了?
编辑:一些示例代码......
MainWindow.xaml:
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:wpfApplication2="clr-namespace:WpfApplication2"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.Resources>
<ResourceDictionary>
<Style TargetType="wpfApplication2:MyComboBox">
<EventSetter Event="SelectionChanged" Handler="SelectionChanged" />
</Style>
</ResourceDictionary>
</Grid.Resources>
<wpfApplication2:MyComboBox Height="23" HorizontalAlignment="Left" Margin="138,145,0,0" VerticalAlignment="Top" Width="75" />
</Grid>
</Window>
MainWindow.xaml.cs:
namespace WpfApplication2
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void SelectionChanged(object sender, RoutedEventArgs e)
{
}
}
}
MyComboBox.cs:
using System.Windows.Controls;
namespace WpfApplication2
{
public class MyComboBox : ComboBox
{
}
}