按下向上/向下箭头时，选择单选按钮 [英] Mark a Radio Button selected when Up/Down arrow is pressed

问题描述

在C＃WPF表单中。我有一个单选按钮组，有3个单选按钮。目前，如果我按向上/向下箭头，我可以通过组中的单选按钮进行解析，但它们未被选中。我需要一个空格按来选择它们。



我期望的行为是，当我按下向上/向下箭头时，聚焦的单选按钮应该被选中而离开另一个单选按钮未选中。有人可以提供具有此行为的示例代码。

In C# WPF forms. I have a radio button group which has 3 radio buttons. Currently if I press Up/Down arrow, I'm able to parse through radio buttons in the group but they are not selected. I need a space press to select them.

The behavior I expect is, when I press a Up/Down arrow, the focused radio button should get selected leaving the other radio buttons unchecked. Could someone give a sample code which has this behavior.

推荐答案

这似乎与您昨天提出的问题相同：

This seems to be the same question as the one you asked yesterday:

https://social.msdn.microsoft.com/Forums/vstudio/en-US/93ecf0e8-b96f-47f5-a890-6c118a1267b0/check-radiobutton-when-tab-is-pressed?forum= wpf＃93ecf0e8-b96f-47f5-a890-6c118a1267b0

https://social.msdn.microsoft.com/Forums/vstudio/en-US/93ecf0e8-b96f-47f5-a890-6c118a1267b0/check-radiobutton-when-tab-is-pressed?forum=wpf#93ecf0e8-b96f-47f5-a890-6c118a1267b0

没有关于更改标签顺序的内容

Just without the stuff about changing tab order

    <Window.Resources>
        <Style TargetType="RadioButton">
            <Style.Triggers>
                <DataTrigger Binding="{Binding Path=IsFocused, RelativeSource={RelativeSource Self}}" Value="True">
                    <Setter Property="IsChecked" Value="True"/>
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>
    <Grid>
        <StackPanel>
            <RadioButton>xxxx</RadioButton>
            <RadioButton>yyyy</RadioButton>
            <RadioButton>zzzzz</RadioButton>
        </StackPanel>
    </Grid>
</Window>

无论是制表符还是箭头，控件都会获得焦点，触发器会设置为IsChecked。

Whether you tab or arrow, the control receives focus and the trigger sets IsChecked.

IsChecked是勾选一个复选框或者给圆圈中的一个单选按钮。

IsChecked is the thing makes a checkbox ticked or gives a radiobutton the spot in the circle.

。

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