WPF Button TextBox 圆角

 <!--圆角button-->
    <Style TargetType="Button">
        <Setter Property="FontSize" Value="15"/>
        <Setter Property="Margin" Value="4"/>
        <Setter Property="FontWeight" Value="Black"/>
        <Setter Property="Foreground" Value="WhiteSmoke"/>
        <Setter Property="BorderThickness" Value="0"/>
        <Setter Property="Background" Value="#FFFF4300"/>
        <Setter Property="Width" Value="100"/>
        <Setter Property="Height" Value="35"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Border BorderBrush="{TemplateBinding Control.BorderBrush}" BorderThickness="0" CornerRadius="16" Name="PART_Background">
                        <Border.Background>
                            <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                <GradientStop Color="White" Offset="0.0" />
                                <GradientStop Color="#FFFF4300" Offset="0.5" />
                                <GradientStop Color="White" Offset="0.0" />
                            </LinearGradientBrush>
                        </Border.Background>
                        <ContentPresenter Content="{TemplateBinding ContentControl.Content}" HorizontalAlignment="Center" VerticalAlignment="Center" />
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

 TextBox圆角

 <Style TargetType="{x:Type TextBox}">
            <Setter Property="VerticalAlignment" Value="Center"/>
            <Setter Property="BorderThickness" Value="6"/>
            <Setter Property="VerticalContentAlignment" Value="Center"/>
            <Setter Property="FontSize" Value="16"/>
            <Setter Property="BorderBrush">
                <Setter.Value>
                    <LinearGradientBrush  StartPoint="0,1" EndPoint="0,0">
                        <GradientStop Color="OrangeRed" Offset="0"/>
                        <GradientStop Color="#FFFFCB97" Offset="1"/>
                    </LinearGradientBrush>
                </Setter.Value>
            </Setter>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type TextBox}">
                        <Grid>
                            <Rectangle RadiusX="5" RadiusY="5" Fill="{TemplateBinding Background}" Stroke="OrangeRed"  StrokeThickness="2"/>
                            <ScrollViewer x:Name="PART_ContentHost"
                          HorizontalScrollBarVisibility="Hidden"
                          VerticalScrollBarVisibility="Hidden"
                          Padding="{TemplateBinding Padding}"
                          Focusable="false">
                            </ScrollViewer>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>