CPF/CpfRazorSample/Test.razor


<StackPanel Background="#f00" Width="500" Height="500">
    <Button Width="80" Height="30" Click="OnMouseDown" Content="text">
    </Button>
    <CheckBox Content="12"></CheckBox>
    @if (visible)
    {
        <Panel Background="#0f0" Width="20" Height="30" MarginLeft="10"></Panel>
    }
</StackPanel>
@code
{
    bool visible = false;
    string text = "test";
    void OnMouseDown()
    {
        text = "test" + visible;
        visible = !visible;
    }
}