MainWindow.xaml

<Window x:Class="WPFTestSkill.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WPFTestSkill"
        mc:Ignorable="d"
        Title="TEST WPF" Height="429.271" Width="690.829">
    <Grid x:Name="Form1" Margin="0,0,2,0" Background="White">
        <Button x:Name="button1" Content="คำนวณ" HorizontalAlignment="Left" Margin="84,298,0,0" VerticalAlignment="Top" Width="89" Height="31" Click="Button_Click"/>
        <TextBox x:Name="textBox1" HorizontalAlignment="Left" Height="30" Margin="228,115,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="188" FontSize="18"/>
        <TextBox x:Name="textBox2" HorizontalAlignment="Left" Height="34" Margin="228,168,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="188" FontSize="18"/>
        <Label Content="รายได้" HorizontalAlignment="Left" Margin="136,115,0,0" VerticalAlignment="Top" Height="34" Width="87" FontSize="18" Background="{x:Null}" FontWeight="Bold"/>
        <Label Content="รายจ่าย " HorizontalAlignment="Left" Margin="136,168,0,0" VerticalAlignment="Top" Height="34" Width="87" FontSize="18" FontWeight="Bold"/>
        <TextBox x:Name="textBox3" HorizontalAlignment="Left" Height="34" Margin="228,220,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="188" FontSize="18"/>
        <Label Content="ราคาของที่อยากได้ " HorizontalAlignment="Left" Margin="56,220,0,0" VerticalAlignment="Top" Height="34" Width="154" FontSize="18" FontWeight="Bold"/>
        <TextBox x:Name="textBox4" HorizontalAlignment="Left" Height="34" Margin="421,298,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="188" FontSize="18"/>
        <Label Content="คุณต้องเก็บเงินทั้งหมด" HorizontalAlignment="Left" Margin="228,298,0,0" VerticalAlignment="Top" Height="34" Width="188" FontSize="18" FontWeight="Bold"/>
        <Label Content="บาท/วัน" HorizontalAlignment="Left" Margin="435,115,0,0" VerticalAlignment="Top" Height="34" Width="76" FontSize="18" Background="{x:Null}" FontWeight="Bold"/>
        <Label Content="บาท/วัน" HorizontalAlignment="Left" Margin="435,168,0,0" VerticalAlignment="Top" Height="34" Width="76" FontSize="18" Background="{x:Null}" FontWeight="Bold"/>
        <Label Content="บาท" HorizontalAlignment="Left" Margin="435,220,0,0" VerticalAlignment="Top" Height="34" Width="76" FontSize="18" Background="{x:Null}" FontWeight="Bold"/>
        <Label Content="วัน" HorizontalAlignment="Left" Margin="614,298,-9,0" VerticalAlignment="Top" Height="34" Width="76" FontSize="18" Background="{x:Null}" FontWeight="Bold"/>
    </Grid>
</Window>