Question

如何在后面的Button代码上调用MouseDoubleClick事件？

我尝试过这样的事情：

btn.RaiseEvent(new RoutedEventArgs(Control.MouseDoubleClickEvent));

但是当我这样做时，我收到以下错误：

Object of type 'System.Windows.RoutedEventArgs' cannot be converted to type 'System.Windows.Input.MouseButtonEventArgs'.

Answer 1

您需要使用MouseButtonEventArgs代替简单的RoutedEventArgs：

代码隐藏：

private void button_WithDoubleClick_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
    MessageBox.Show("Double click");
}

private void button_RaiseDoubleClick_Click(object sender, RoutedEventArgs e)
{
    var args = new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
    {
        RoutedEvent = Control.MouseDoubleClickEvent
    };

    this.button_WithDoubleClick.RaiseEvent(args);
}

的Xaml：

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <Button Name="button_WithDoubleClick" Content="Button with double click" MouseDoubleClick="button_WithDoubleClick_MouseDoubleClick" />
    <Button Grid.Row="1" Name="button_RaiseDoubleClick" Content="Button to raise double click" Click="button_RaiseDoubleClick_Click"/>
</Grid>

P.S。：我不确定将MouseButtonEventArgs - The time when the input occurred.的第二个构造函数参数的值给出什么。 0在这个演示中运行良好，但它是否适用于我不知道的更复杂的交互。

如何在后面的Button代码上调用MouseDoubleClick

1 个答案: