3rdpartylibs/fastreports.wpf/FastReport.Forms.WPF/CustomControls/NumericUpDown.xaml

<UserControl x:Class="CustomControls.NumericUpDown"
             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:local="clr-namespace:CustomControls"
             mc:Ignorable="d" 
             d:DesignHeight="25" d:DesignWidth="100">

    <Grid Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>
        <TextBox Name="tbmain" Grid.ColumnSpan="2" Grid.RowSpan="2" Padding="0,2,0,2"
             Text="{Binding Path=FormattedValue, RelativeSource={RelativeSource AncestorType={x:Type local:NumericUpDown}}}" KeyDown="tbmain_KeyDown" />
        <RepeatButton Name="btnUp" BorderThickness="0" BorderBrush="Transparent" Grid.Column="1" Grid.Row="0" Background="Transparent" Click="btnUp_Click" Margin="0,1,1,0">
            <Path Fill="Black" Data="M 0 3 L 6 3 L 3 0 Z"/>
        </RepeatButton>
        <RepeatButton Name="btnDown" BorderThickness="0" BorderBrush="Transparent" Grid.Column="1" Grid.Row="1" Width="13" Background="Transparent" Click="btnDown_Click" Margin="0,0,1,1">
            <Path Fill="Black" Data="M 0 0 L 3 3 L 6 0 Z"/>
        </RepeatButton>
    </Grid>
</UserControl>