WPF XAML 为项目设置全局样式

<Application.Resources>
    <ResourceDictionary><br>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Dictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries><br>
        <Style x:Key="xxx" TargetType="Button">
            <Setter Property="Foreground" Value="White"></Setter>
            <Setter Property="FontSize" Value="30"></Setter>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Grid></Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
</Style>
        <ControlTemplate x:Key="xx" TargetType="Button">
            <Grid></Grid>
        </ControlTemplate>
    </ResourceDictionary>
</Application.Resources>

ControlStyle.xaml
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:DemoForm.UI">
    <Style x:Key="BtnControl" TargetType="Button">
        <Setter Property="FontSize" Value="15"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Height" Value="40"/>
        <Setter Property="Margin" Value="2"/>
        <!--<Setter Property="Background" Value="Red"/>-->
</Style>
</ResourceDictionary>

App.xaml
<Application
    x:Class="DemoForm.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:DemoForm"
    StartupUri="MainWindow.xaml">

    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/UI/ControlStyle.xaml"></ResourceDictionary>
                <!--或者这样方式DemoForm;component/UI/Dictionary1.xaml  引用以后就可以继承了-->
            </ResourceDictionary.MergedDictionaries>
            <Style BasedOn="{StaticResource  BtnControl}" TargetType="Button" >
                <Setter Property="FontSize" Value="10" />
                <Setter Property="HorizontalContentAlignment" Value="Center" />
                <Setter Property="VerticalContentAlignment" Value="Center" />
                <Setter Property="Height" Value="40" />
                <Setter Property="Margin" Value="2" />
                <Setter Property="Template">  <!--应用于全局的控件模板-->
                    <Setter.Value>
                        <ControlTemplate TargetType="Button">
                            <Border BorderThickness="1" CornerRadius="10" Background="{TemplateBinding Background}">
                                <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center"/>
                            </Border>
                            <ControlTemplate.Triggers >
                                <Trigger Property="Button.IsMouseOver" Value="True">
                                    <Setter Property="Button.Background" Value="blue"/>
                                </Trigger >
                            </ControlTemplate.Triggers >
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
</Style>
            <Style TargetType="Label">
                <!--//x:Key="LblStyle"去掉就是全局引用-->
                <Setter Property="FontSize" Value="12" />
                <Setter Property="HorizontalContentAlignment" Value="Center" />
                <Setter Property="VerticalContentAlignment" Value="Center" />
</Style>
            <Style TargetType="TextBox">
                <!--//x:Key="TxtStyle" 去掉就是全局引用-->
                <Setter Property="FontSize" Value="12" />
                <Setter Property="HorizontalContentAlignment" Value="Center" />
                <Setter Property="VerticalContentAlignment" Value="Center" />
                <Setter Property="MaxHeight" Value="50" />
                <Setter Property="MinWidth" Value="80" />
                <Setter Property="Margin" Value="2" />
</Style>
            <!--<ControlTemplate x:Key="buttonTemplate" TargetType="Button" >
                <Border BorderThickness="1" CornerRadius="10" Background="{TemplateBinding Background}">
                    <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center"/>
                </Border>
                <ControlTemplate.Triggers >
                    <Trigger Property="Button.IsMouseOver" Value="True">
                        <Setter Property="Button.Background" Value="blue"/>
                    </Trigger >
                </ControlTemplate.Triggers >
            </ControlTemplate >-->
        </ResourceDictionary>
    </Application.Resources>
</Application>