WPF(x:Key 使用）

<Window x:Class="TestOfKey.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:sys="clr-namespace:System;assembly=mscorlib"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <sys:String x:Key="myString">Hello WPF Resource!</sys:String>
    </Window.Resources>
    
    <StackPanel Background="Gray" >
        <TextBox Text="{StaticResource ResourceKey=myString}" Margin="5" />
        <TextBox x:Name="textBox1" Margin="5" />
        <Button Content="Show" Click="ButtonClick" Margin="5" />
    </StackPanel>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace TestOfKey
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void ButtonClick(object sender, RoutedEventArgs e)
        {
            this.textBox1.Text = this.FindResource("myString") as string;
        }
    }
}