WPF 资源基础

2024-04-26 10:46
19人已看

动态资源/静态资源

UI代码

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <!--笔刷资源-->
        <SolidColorBrush x:Key="SolidColor" Color="Red"/>
    </Window.Resources>

    <Grid>
        <StackPanel>
            <!--按钮事件，通过点击按钮，更新资源的Color-->
            <Button Content="Update" Margin="10" Click="Button_Update" />
            <!--静态绑定-->
            <Button Content="Button1" BorderBrush="{StaticResource SolidColor}" Margin="10"/>
            <!--动态绑定-->
            <Button Content="Button2" BorderBrush="{DynamicResource SolidColor}" Margin="10"/>
        </StackPanel>
    </Grid>
</Window>

业务代码

namespace WpfApp1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();        
        }

        private void Button_Update(object sender, RoutedEventArgs e)
        {
            //找到资源，设置新的值
            this.Resources["SolidColor"] = new SolidColorBrush(Colors.Black);
        }
    }
}