UWP C#中的ToggleSwitch

Question

我有一个小问题.我正在尝试创建一个UWP C#应用程序,我正在项目中使用切换开关.如果我经常从软件切换ToggleSwitch的状态,则内存使用量会大大增加.为什么会这样？

ToggleSwitch表示使用绑定的布尔值.

我创建了示例代码:

XAML:

<Page
x:Class="App1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App1"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <ToggleSwitch Header="Test" HorizontalAlignment="Left" Margin="213,27,0,0" VerticalAlignment="Top" IsOn="{Binding Path=TestBool, Mode=TwoWay}"/>
    <CheckBox Content="Two-state CheckBox" Margin="108,162,0,806" IsChecked="{Binding Path=TestBool, Mode=TwoWay}"/>
    <Button Content="Start!" HorizontalAlignment="Left" Margin="69,58,0,0" VerticalAlignment="Top" Click="Button_Click"/>
</Grid>

C#:

using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using System.ComponentModel;
using System.Runtime.CompilerServices;

// The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409

namespace App1
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    /// 

    public sealed partial class MainPage : Page, INotifyPropertyChanged
    {
        private bool testBool = false;

        public bool TestBool { get { return testBool; } set { if (testBool != value) { testBool = value; OnPropertyChanged(); } } }

        public MainPage()
        {
            DataContext = this;
            this.InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            for (int i = 0; i < 10000; i++)
            {
                TestBool = !TestBool;
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

我做了一些不可能的事情,我理解错了什么？

当我用CheckBox替换ToggleSwitch时,内存使用量增加得更少.

Answer 1

看来您的调用正在耗尽 CPU。

我的答案是你应该重新考虑你的应用程序的架构。