PraktikaPoslednyayaChast/Praktika3/MainWindow.xaml

<Window x:Class="Praktika3.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:Praktika3"
        mc:Ignorable="d"
        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
        Title="8-6-4-2" Height="600" Width="400">
    <Grid Background="#F3EAF4">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="131*"/>
            <ColumnDefinition Width="130*"/>
            <ColumnDefinition Width="108*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <Button x:Name="btnClear" Content="C"  Height="56" Width="56" Click="btnClear_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0" Grid.Row="1" Grid.Column="2"/>
        <Button x:Name="btnPlus" Content="+" Height="56" Width="61" Click="btnPlus_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="67,4,0,0" Grid.Row="1"/>
        <Button x:Name="btnMinus" Content="-"  Height="56" Width="61" Click="btnMinus_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0" Grid.Row="1" Grid.Column="1"/>
        <Button x:Name="btnMult" Content="*"  Height="56" Width="61" Click="btnMult_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="67,4,0,0" Grid.Row="1" Grid.Column="1"/>
        <Button x:Name="btn8642" Content="Перевести первое число в 8-6-4-2"  Height="40" Width="265" Click="btn8642_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="68,65,0,0" Grid.Row="1" Grid.ColumnSpan="3"/>
        <Button x:Name="btn8642Back" Content="Перевести первое число обратно"  Height="40" Width="265" Click="btn8642Back_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="67,110,0,0" Grid.Row="1" Grid.ColumnSpan="3"/>
        <Button x:Name="btn10" Content="Перевести второе число в 10"  Height="40" Width="265" Click="btn10_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="67,155,0,0" Grid.Row="1" Grid.ColumnSpan="3" Grid.RowSpan="2"/>
        <Button x:Name="btn10Back" Content="Перевести второе число обратно"  Height="40" Width="265" Click="btn10Back_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="68,10,0,0" Grid.Row="2" Grid.ColumnSpan="3"/>
        <Button x:Name="btnAnswer10" Content="Получить ответ в 10 системе"  Height="40" Width="265" Click="btnAnswer10_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="68,55,0,0" Grid.Row="2" Grid.ColumnSpan="3"/>
        <Button x:Name="btnAnswer8642" Content="Получить ответ в 8-6-4-2 системе"  Height="40" Width="265" Click="btnAnswer8642_Click" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="67,100,0,0" Grid.Row="2" Grid.ColumnSpan="3"/>

        <TextBox Name ="lblFirst" materialDesign:HintAssist.Hint="Введите число в десятичной системе" Style="{StaticResource MaterialDesignFloatingHintTextBox}" Background="#FFFF" Margin="68,30,50,120" Grid.ColumnSpan="5" Height="40"/>
        <TextBox Name ="lblSecond" materialDesign:HintAssist.Hint="Введите число в 8-6-4-2" Style="{StaticResource MaterialDesignFloatingHintTextBox}" Background="#FFFF" Margin="68,108,50,42" Grid.ColumnSpan="3" Height="40"/>
        <TextBox Name ="lblResult" materialDesign:HintAssist.Hint="Результат" Style="{StaticResource MaterialDesignFloatingHintTextBox}" Background="#FFFF" Margin="68,149,50,0" Height="40" VerticalAlignment="Top" Grid.ColumnSpan="3" IsReadOnly="True"/>
        <TextBox Name="lblAction" materialDesign:HintAssist.Hint="Введите знак операции" Style="{StaticResource MaterialDesignFloatingHintTextBox}" Background="#FFFF" Margin="68,70,50,0" Height="40" VerticalAlignment="Top" Grid.ColumnSpan="3" IsReadOnly="True"/>
    </Grid>
</Window>