新建资源文件

写资源文件

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WpfDemo.Style"> <Style TargetType="Button" x:Key="MyStyleButton"> <Setter Property="Background" Value="Pink"></Setter> </Style> </ResourceDictionary> 

引用资源

在独立的窗口/用户控件中引用

<Window x:Class="WpfDemo.Style.UseResourceDictionaryDemo"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:WpfDemo.Style" mc:Ignorable="d" Title="UseResourceDictionaryDemo" Height="300" Width="300"> <Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="MyStyle.xaml"></ResourceDictionary> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Window.Resources> <Grid> <Button Style="{StaticResource MyStyleButton}"></Button> </Grid> </Window> 

在App.xaml中统一引用(全局引用)

<!--App.xaml（WPF原生默认style.xaml，不同框架有所不同）-->
<Application x:Class="MAS.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" StartupUri="MainWindow.xaml"> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Style/MyStyle.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> </Application> 

小结

写法和写在Resources中一样，只是多了个ResourceDictionary的文件，并需要引用ResourceDictionary文件才能使用Style

示例代码

https://github.com/zLulus/NotePractice/tree/dev3/WPF/WpfDemo/Style 下的MyStyle和UseResourceDictionaryDemo