楔子：做软件时，经常有这样的需求，这样配色不合适？或者像动态的修改样式？那问题来了：怎样修软件界面的主题、修改皮肤？

方法1：使用第三方控件，直接更换主题，panuon 有类似的应用；

方法2：使用DynamicResource 资源，在代码中修改样式，然后引用该样式的所有主题将会被改变；下面介绍简单应用：

步骤一：定义样式，用 DynamicResource 引用：

<Window x:Class="HandyControlDemo.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:HandyControlDemo"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">

    <Window.Resources>
        <SolidColorBrush x:Key="TestBrush" Color="#FF0000" />
    </Window.Resources>
    <Grid>
        <StackPanel>
            <Button  Width="150" Background="{DynamicResource TestBrush}" Content= "{Binding ContenTest}" Click="Button_SttkeCkucj"></Button>
        </StackPanel>

    </Grid>
</Window>

步骤二：在代码中修改 "TestBrush" 的值：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
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;
using static HandyControlDemo.MainWindow;

namespace HandyControlDemo
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : System.Windows.Window, INotifyPropertyChanged
    {
        private string _contenTest;
        public string ContenTest 
        {
            get { return _contenTest; }
            set 
            {
                _contenTest = value; 
                this.RaisePropertyChanged();
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        public void RaisePropertyChanged([CallerMemberName] string propertyName = "")
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        public MainWindow()
        {
            InitializeComponent();

            this.DataContext = this;

            ContenTest = "修改 DynamicResource";
        }

        private void Button_SttkeCkucj(object sender, RoutedEventArgs e)
        {
            this.Resources["TestBrush"] = new SolidColorBrush(Colors.Green);

            ContenTest = "修改成功";
        }

    }
}

效果如下：

修改后：

演示完成。