c# - 样式事件设置器找不到问题所在

问题描述

这是我的风格部分：

<Style x:Key="anan" TargetType="{x:Type TextBox}">
        <Setter Property="TextElement.FontFamily" Value="/Fonts/#Minecraft"/>
        <Setter Property="Foreground" Value="#FF19198B"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="Margin" Value="10 8"/>
        <EventSetter Event="PreviewTextInput" Handler="Left_TextBoxs_previewtextinput"/>
        <EventSetter Event="GotFocus" Handler="Left_TextBoxs_get_GotFocus"/>
        <EventSetter Event="GotMouseCapture" Handler="current_x_get_GotMouseCapture"/>
        <EventSetter Event="IsMouseCaptureWithinChanged" Handler="current_x_get_IsMouseCaptureWithinChanged"/>
        <Style.Triggers>
            <Trigger Property="IsFocused" Value="true">
                <Setter Property="Foreground" Value="#FF66B616"/>
            </Trigger>
        </Style.Triggers>
    </Style>

给我带来麻烦的部分我找不到为什么它说The event is not a rooted event。

<EventSetter Event="IsMouseCaptureWithinChanged" Handler="current_x_get_IsMouseCaptureWithinChanged"/>

...这是xaml.cs

private void Left_TextBoxs_get_GotFocus(object sender, RoutedEventArgs e)
{
    TextBox textBox = (TextBox)sender;
    textBox.CaptureMouse();
    textBox.SelectAll();
    textBox.Focus();
}

private void current_x_get_GotMouseCapture(object sender, MouseEventArgs e)
{
    TextBox textBox = (TextBox)sender;
    textBox.SelectAll();
}

private void current_x_get_IsMouseCaptureWithinChanged(object sender, DependencyPropertyChangedEventArgs e)
{
    TextBox textBox = (TextBox)sender;
    textBox.SelectAll();
}

有人可以说它有什么问题以及如何解决吗？

标签： c#wpf

https://docs.microsoft.com/en-us/dotnet/api/system.windows.uielement.ismousecapturewithinchanged?view=netcore-3.1

正如错误消息通知您的那样，IsMouseCaptureWithinChanged不是路由事件，而是 CLR 事件。文档清楚地解释了这一点。

对此事件作出反应的唯一方法是将事件处理程序附加到必要的 UI 元素。

c# - 样式事件设置器找不到问题所在

问题描述

解决方案

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