qwerty/Cafe11/MainWindow.xaml

<Window x:Class="Cafe11.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:Cafe11"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <TextBox x:Name="txtlog" HorizontalAlignment="Left" Height="23" Margin="326,177,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>
        <PasswordBox x:Name="txtpass" HorizontalAlignment="Left" Margin="382,239,0,0" VerticalAlignment="Top"/>
        <Button x:Name="btnlog" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Margin="353,295,0,0" Click="btnlog_Click"/>

    </Grid>
</Window>