EscribePassword/MainWindow.xaml

<Window x:Class="EscribePassword.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:EscribePassword" mc:Ignorable="d" Title="MainWindow" Height="450" Width="300"
        AllowsTransparency="True" WindowStyle="None" MouseDown="Window_MouseDown">
    <Window.DataContext>
        <local:MView />
    </Window.DataContext>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <DataGrid Grid.Row="0" ItemsSource="{Binding Passwords}" SelectedItem="{Binding SelectedPassword}"
                AutoGenerateColumns="False" CanUserAddRows="False" CanUserDeleteRows="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Usuario" Binding="{Binding Usuario}" Width="*" />
                <DataGridTextColumn Header="Contraseña" Binding="{Binding Password}" Width="*" />
                <DataGridTemplateColumn Header="Acciones" Width="Auto">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <Button Content="Eliminar"
                                        Command="{Binding DataContext.EliminarCommand, RelativeSource={RelativeSource AncestorType=DataGrid}}"
                                        CommandParameter="{Binding}" />
                                <Button Content="Utilizar"
                                        Command="{Binding DataContext.UtilizarCommand, RelativeSource={RelativeSource AncestorType=DataGrid}}"
                                        CommandParameter="{Binding}" Margin="5,0,0,0" />
                            </StackPanel>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
        <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Center" Margin="10,10,10,10">
            <Button Content="Agregar" Command="{Binding AgregarCommand}" Margin="5" />
            <Button Content="Cerrar" Command="{Binding CerrarCommand}" Margin="5" />
        </StackPanel>
    </Grid>
</Window>