Question

我有一个带3个项目和两个单选按钮的组合框。如果我选择item1，则radioButton1应该可见，第二个应该被隐藏。如果选择了item2，则该过程应该反之亦然，通过选择item3，两个单选按钮都应该可见。

Answer 1

如果使用c＃进行编码，可以在comboBoxSelectedIndexChanged事件函数中使用switch-case分支。对于可见性，应使用Visible类，您可以使用布尔值控制。在C＃中有类似的东西（未经测试）：

void ComboBox1SelectedIndexChanged(object sender, EventArgs e)
{
        Object selectedItem = comboBox1.SelectedItem;
        switch (selectedItem.ToString())
        {
            case "item1":
                radioButton1.Visible = true;
                radioButton2.Visible = false;
                break;
            case "item2":
                radioButton1.Visible = false;
                radioButton2.Visible = true;
                break;
            case "item3":
                radioButton1.Visible = true;
                radioButton2.Visible = true;
                break;
            default:
                radioButton1.Visible = false;
                radioButton2.Visible = false;
                break;
        }
}

Answer 2

试试这个：

<Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>

        <ComboBox Grid.Row="0" x:Name="combo">
            <ComboBoxItem x:Name="item1" Content="item1" IsSelected="True"></ComboBoxItem>
            <ComboBoxItem x:Name="item2" Content="item2"></ComboBoxItem>
            <ComboBoxItem x:Name="item3" Content="item3"></ComboBoxItem>
        </ComboBox>
        <StackPanel Grid.Row="1">
            <RadioButton Content="1">
                <RadioButton.Style>
                    <Style>
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item1}" Value="True">
                                <Setter Property="RadioButton.Visibility" Value="Visible"></Setter>
                            </DataTrigger>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item1}" Value="False">
                                <Setter Property="RadioButton.Visibility" Value="Hidden"></Setter>
                            </DataTrigger>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item3}" Value="True">
                                <Setter Property="RadioButton.Visibility" Value="Visible"></Setter>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </RadioButton.Style>
            </RadioButton>
            <RadioButton Content="2">
                <RadioButton.Style>
                    <Style>
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item2}" Value="True">
                                <Setter Property="RadioButton.Visibility" Value="Visible"></Setter>
                            </DataTrigger>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item2}" Value="False">
                                <Setter Property="RadioButton.Visibility" Value="Hidden"></Setter>
                            </DataTrigger>
                            <DataTrigger Binding="{Binding IsSelected, ElementName=item3}" Value="True">
                                <Setter Property="RadioButton.Visibility" Value="Visible"></Setter>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </RadioButton.Style>
            </RadioButton>
        </StackPanel>
    </Grid>

如何通过选择组合框项目使无线电按钮可见？

2 个答案: