C# 模板控件可见性

在mui base项目中，我声明了一个资源模板控件：

然后问题是当我折叠我的网格，折叠父网格！ 这是个好主意吗？

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我的错误在哪里？

使用loading.Visibility=Visibility.Hidden；不折叠

只是为了清楚问题是父网格也折叠了？是的，我只想要清空加载，但我的父网格折叠了。坦克，但结果是一样的。您是否尝试过垂直/水平对齐拉伸？

<ControlTemplate x:Key="loadingUserControlTemplate" TargetType="UserControl">
    <Grid x:Name="loadingContainer">
        <Border
                Opacity="0.5"
                BorderBrush="{TemplateBinding BorderBrush}"
                BorderThickness="{TemplateBinding BorderThickness}">

            <ContentPresenter />
        </Border>
        <mui:ModernProgressRing x:Name="loadingAnimation"
                                IsActive="true" 
                                Width="80" 
                                Height="80" 
                                Style="{StaticResource WaveProgressRingStyle}" 
                                VerticalContentAlignment="Center" />
    </Grid>
</ControlTemplate>

public class LoadingUserControl : UserControl
{
    public bool _isLoading;

    public Boolean IsLoading
    {
        get { return _isLoading; }
        set
        {
            _isLoading = value;

            var loading = base.GetTemplateChild("loadingContainer") as Grid;

            if (loading != null)
            {
                if (value)
                {
                    base.IsEnabled = false;
                    loading.Visibility = Visibility.Visible;
                }

                else
                {
                    base.IsEnabled = true;
                    loading.Visibility = Visibility.Collapsed;
                }
            }
        }
    }
    public LoadingUserControl()
    {
        base.Template = (ControlTemplate)App.Current.FindResource("loadingUserControlTemplate");
    }
}