WPF-控件-编辑圆角TextBox

使用模板

代码如下：

<Window

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero" x:Class="模板.MainWindow"

        Title="MainWindow" Height="350" Width="525">

    <Window.Resources>

        <LinearGradientBrush x:Key="TextBoxBorder" EndPoint="0,20" MappingMode="Absolute" StartPoint="0,0">

            <GradientStop Color="#ABADB3" Offset="0.05"/>

            <GradientStop Color="#E2E3EA" Offset="0.07"/>

            <GradientStop Color="#E3E9EF" Offset="1"/>

        </LinearGradientBrush>

        <Style x:Key="RoutedCornerTextBoxStyle" BasedOn="{x:Null}" TargetType="{x:Type TextBox}">

            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>

            <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>

            <Setter Property="BorderBrush" Value="{StaticResource TextBoxBorder}"/>

            <Setter Property="BorderThickness" Value="1"/>

            <Setter Property="Padding" Value="1"/>

            <Setter Property="AllowDrop" Value="true"/>

            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type TextBox}">

                        <!--<Themes:ListBoxChrome x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderFocused="{TemplateBinding IsKeyboardFocusWithin}" SnapsToDevicePixels="true">

                            <ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>

                        </Themes:ListBoxChrome>

                        <ControlTemplate.Triggers>

                            <Trigger Property="IsEnabled" Value="false">

                                <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>

                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                            </Trigger>

                        </ControlTemplate.Triggers>-->

                        <Border x:Name="Bd" SnapsToDevicePixels="True"

                                Background="{TemplateBinding Background}"

                                BorderBrush="{TemplateBinding BorderBrush}"

                                BorderThickness="{TemplateBinding BorderThickness}"

                                CornerRadius="15"

                                >

                            <ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"></ScrollViewer>

                        </Border>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

        </Style>

    </Window.Resources>

    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition/>

            <RowDefinition/>

        </Grid.RowDefinitions>

        <TextBox x:Name="textBox1" BorderBrush="Red" Margin="10" Height="40" Grid.Row="0" Style="{DynamicResource RoutedCornerTextBoxStyle}"/>

        <TextBox x:Name="textBox2" BorderBrush="Green" Margin="10" Height="40" Grid.Row="1"/>

    </Grid>

</Window>

效果如下：

另一种方式

<Window x:Class="圆角TextBox.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="MainWindow" Height="350" Width="525">

    <Window.Resources>

        <Style TargetType="{x:Type TextBox}">

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type TextBox}">

                        <Border x:Name="Bd" SnapsToDevicePixels="True"

                                Background="{TemplateBinding Background}"

                                BorderBrush="{TemplateBinding BorderBrush}"

                                BorderThickness="{TemplateBinding BorderThickness}"

                                CornerRadius="5">

                            <ScrollViewer x:Name="da" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"></ScrollViewer>

                        </Border>

                    </ControlTemplate>

                </Setter.Value>   

            </Setter>

            <Setter Property="Margin" Value="5"/>

            <Setter Property="BorderBrush" Value="Green"/>

            <Setter Property="Height" Value="25"/>

            <Setter Property="Width" Value="200"/>

        </Style>

    </Window.Resources>

    <StackPanel>

        <TextBox/>

        <TextBox/>

        <TextBox Style="{x:Null}" Height="20" Width="100" Margin="10"></TextBox>

    </StackPanel>

</Window>

因为Style没有x:Key标记，默认为应用到所有由x:Type指定的控件上，如果不想应用则需要把空间的Style标记为{x:Null}就行。