Otel/HotelCalifornia/MainWindow.xaml

<Window x:Class="HotelCalifornia.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:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
        xmlns:local="clr-namespace:HotelCalifornia"
        mc:Ignorable="d"
        Title="MainWindow" Background="Transparent" AllowsTransparency="True" Height="400" Width="700" WindowStartupLocation="CenterScreen" ResizeMode="NoResize" WindowStyle="None" Icon="image/h1.png">
    <Grid MouseDown="Grid_MouseDown">
        <Border HorizontalAlignment="Left" Height="400" VerticalAlignment="Top" Width="350" CornerRadius="20,0,0,20"
                    Background="#7E42F5"/>
        <Border HorizontalAlignment="Left" Height="400" VerticalAlignment="Top" Width="350" CornerRadius="0,20,20,0"
                    Background="#383E7A" Margin="350,0,0,0">
        </Border>
        <Image Source="Image/hotel.png" Stretch="Uniform" Margin="-29,48,329,32"/>
        <Image HorizontalAlignment="Left" Height="75" Margin="33,278,0,0" VerticalAlignment="Top" Width="291" Source="Image/California.png"/>
        <Image HorizontalAlignment="Left" Height="57" Margin="-34,72,0,0" VerticalAlignment="Top" Width="431" Source="Image/wel.png"/>
        <Image HorizontalAlignment="Left" Height="57" Margin="96,15,0,0" VerticalAlignment="Top" Width="183" Source="Image/5star.png"/>
        <Image HorizontalAlignment="Left" Height="62" Margin="319,177,0,0" VerticalAlignment="Top" Width="63" Source="Image/cir2.png"/>
        <Image HorizontalAlignment="Left" Height="62" Margin="319,177,0,0" VerticalAlignment="Top" Width="63" Source="Image/h1.png"/>
        <Button
                Background="#7E42F5"
    materialDesign:ButtonAssist.CornerRadius="25"
    ToolTip="Вход" Margin="458,289,91,60" Height="Auto" Click="Vhod">
            <TextBlock Text="Войти" />
        </Button>
        <StackPanel HorizontalAlignment="Left" Height="206" Margin="404,88,0,0" VerticalAlignment="Top" Width="258">
            <Label Content="Авторизация" Margin="0,0,0,0" Foreground="White" FontSize="18" FontFamily="Sergeo UI" HorizontalAlignment="Center"/>
            <Label Content="Логин:" Margin="0,10,0,0" Foreground="White" FontSize="18" FontFamily="Sergeo UI"/>
            <StackPanel Orientation="Horizontal">
                <materialDesign:PackIcon Kind="User" Width="30" Height="30" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                <TextBox Name="logintxt" Margin="0,0,0,0" FontSize="18" FontFamily="Sergeo UI" Foreground="White"
  materialDesign:HintAssist.Hint="Введите логин" Width="227"/>
            </StackPanel>
            <Label Content="Пароль:" Margin="0,10,0,0" Foreground="White" FontSize="18" FontFamily="Sergeo UI"/>
            <StackPanel Orientation="Horizontal">
                <materialDesign:PackIcon Kind="Password" Width="30" Height="30" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                <PasswordBox Name="passwordtxt" materialDesign:HintAssist.Hint="Введите пароль" Foreground="White" FontSize="18" FontFamily="Sergeo UI"  HorizontalAlignment="Center" Margin="0,5,0,0" Width="226"/>
            </StackPanel>
        </StackPanel>
        <Button
  Style="{StaticResource MaterialDesignIconButton}"
  ToolTip="Выход из приложения" Margin="642,10,10,342" Click="Close">
            <materialDesign:PackIcon
    Kind="ExitToApp" Foreground="White"/>
        </Button>
    </Grid>
</Window>