如何将WPF控件动态地更改为另一个？

Question

I need to do a component where checkboxes change into radiobuttons when certain property changes. I have no idea how to do that kind of change in xaml. The checkbox is in a datatemplate as shown below. Now I just need some kind of logic to change it into a radiobutton.

<DataTemplate>
    <CheckBox IsChecked="{Binding IsSelected.Value, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</DataTemplate>

Answer 1

Especially when there are a lot of instances, the solution of having both controls within the DataTemplate and changing visibility might not be ideal considering performance and memory usage. In this case, a DataTemplateSelector might do the trick - see this tutorial

Answer 2

you can put both CheckBox and RadioButton in one container ( StackPanel for example) in DataTemplate and just collapse one of them according to your condition using DataTrigger .

i hope it'll help you. sorry for my pure english.

<DataTemplate>
    <StackPanel>
        <CheckBox Content="CheckBoxHeader">
            <CheckBox.Style>
                <Style TargetType="CheckBox">
                    <Setter Property="Visibility" Value="Visible"/>
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Condition}" Value="True">
                            <Setter Property="Visibility" Value="Collapsed"/>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </CheckBox.Style>
        </CheckBox>
        <RadioButton Content="RadioButtonHeader">
            <RadioButton.Style>
                <Style TargetType="RadioButton">
                    <Setter Property="Visibility" Value="Collapsed"/>
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Condition}" Value="True">
                            <Setter Property="Visibility" Value="Visible"/>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </RadioButton.Style>
        </RadioButton>                        
    </StackPanel>
</DataTemplate>