VideoConcat/Views/MainWindow.xaml

<Window x:Class="VideoConcat.Views.MainWindow"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:Icon="http://metro.mahapps.com/winfx/xaml/iconpacks"
      xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
      xmlns:local="clr-namespace:VideoConcat.Views"
      xmlns:vm="clr-namespace:VideoConcat.ViewModels"
      xmlns:conv="clr-namespace:VideoConcat.Conversions"

      mc:Ignorable="d" 
      Width="1100" Height="800" WindowStartupLocation="CenterScreen"
      ResizeMode="NoResize"
      Title="工具">
    <Window.Resources>
        <Style x:Key="BottomButton" TargetType="Button">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="#FFFFFF"/>
            <Setter Property="Width" Value="50"/>
            <Setter Property="Height" Value="50"/>
            <Setter Property="BorderBrush" Value="White"/>
            <Setter Property="BorderThickness" Value="2,2,2,2"/>

            <Setter Property="Margin" Value="1"/>
            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}" CornerRadius="5">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Background" Value="#5a5080"/>
                </Trigger>
                <Trigger Property="IsPressed" Value="True">
                    <Setter Property="Background" Value="#FFFFFF"/>
                    <Setter Property="BorderBrush" Value="GreenYellow"/>
                    <Setter Property="BorderThickness" Value="2,2,2,2"/>
                </Trigger>
            </Style.Triggers>
        </Style>
        <Style x:Key="MenuButton" TargetType="RadioButton">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="#FFFFFF"/>
            <Setter Property="Width" Value="50"/>
            <Setter Property="Height" Value="50"/>
            <Setter Property="BorderBrush" Value="Black"/>
            <Setter Property="BorderThickness" Value="2,2,2,2"/>

            <Setter Property="Margin" Value="1"/>
            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="RadioButton">

                        <Border Background="{TemplateBinding Background}" CornerRadius="5">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Background" Value="#5a5080"/>
                </Trigger>
                <Trigger Property="IsChecked" Value="True">
                    <Setter Property="Background" Value="Brown"/>
                    <Setter Property="BorderBrush" Value="Black"/>
                    <Setter Property="BorderThickness" Value="2,2,2,2"/>
                </Trigger>
                <!-- 按下状态 -->
                <Trigger Property="IsPressed" Value="True">
                    <Setter  Property="Background" Value="#D0D0D0"/>
                </Trigger>
            </Style.Triggers>
        </Style>

        <Style x:Key="MenuButtonIcon" TargetType="Icon:PackIconMaterial">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="White"/>
            <Setter Property="BorderBrush" Value="White"/>
            <Setter Property="Width" Value="24"/>
            <Setter Property="Height" Value="18"/>
        </Style>
    </Window.Resources>

    <Border Background="#cfd5e5" CornerRadius="5" BorderThickness="2" BorderBrush="#ebedf3" Padding="2" MouseDown="Border_MouseDown">
        <Border CornerRadius="5">
            <Border.Background>
                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                    <GradientStop Color="#fefefe" Offset="0" />
                    <GradientStop Color="#ededef" Offset="1" />
                </LinearGradientBrush>
            </Border.Background>

            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="70" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <!--Left Menu-->
                <Border Background="#7163ba" CornerRadius="5" BorderThickness="2" BorderBrush="#ebedf3" Margin="2">
                    <Grid>
                        <StackPanel VerticalAlignment="Top">
                            <RadioButton  GroupName="OptionsGroup" Name="video" Style="{StaticResource MenuButton}" Checked="RadioButton_Checked" >
                                <StackPanel HorizontalAlignment="Center">
                                    <Icon:PackIconMaterial Kind="VideoBox" Style="{StaticResource MenuButtonIcon}"/>
                                    <TextBlock>视频</TextBlock>
                                </StackPanel>
                            </RadioButton>
                            <Separator></Separator>
                            <RadioButton  GroupName="OptionsGroup" Name="extract" Style="{StaticResource MenuButton}" Checked="RadioButton_Checked">
                                <StackPanel HorizontalAlignment="Center">
                                    <Icon:PackIconMaterial Kind="VideoCheck" Style="{StaticResource MenuButtonIcon}"/>
                                    <TextBlock>抽帧</TextBlock>
                                </StackPanel>
                            </RadioButton>
                            <Separator></Separator>
                        </StackPanel>
                        <StackPanel VerticalAlignment="Bottom">
                            <Button Style="{StaticResource BottomButton}">
                                <Icon:PackIconMaterial Kind="Account" Style="{StaticResource MenuButtonIcon}"/>
                            </Button>
                        </StackPanel>
                    </Grid>
                </Border>

                <!--Main Section-->
                <Border  Grid.Column="1" CornerRadius="5" BorderThickness="2" BorderBrush="#ebedf3" Margin="2">
                    <Grid  x:Name="mainGrid">
                    </Grid>
                </Border>
            </Grid>
        </Border>
    </Border>
</Window>