buechermarkt/BuechermarktClient/StudentsEdit.xaml

<Window x:Class="BuechermarktClient.StudentsEdit"
        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:BuechermarktClient"
        mc:Ignorable="d"
        Title="Schüler" Height="393.494" Width="300">
    <StackPanel VerticalAlignment="Top">
        <Label Content="Vorname" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=Forname, Mode=TwoWay}"></TextBox>
        <Label Content="Nachname" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=Lastname, Mode=TwoWay}"></TextBox>
        <Label Content="E-Mail" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=EMail, Mode=TwoWay}"></TextBox>
        <Label Content="Telefon" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=PhoneNumber, Mode=TwoWay}"></TextBox>
        <Label Content="LabelId" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=LabelId, Mode=TwoWay}"></TextBox>
        <Label Content="Klasse" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=Form, Mode=TwoWay}"></TextBox>
        <Label Content="iD" Margin="10,0"></Label>
        <TextBox Margin="10,0" Text="{Binding Path=ID, Mode=OneWay}"></TextBox>
        <Grid Margin="10,10,10,0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"></ColumnDefinition>
                <ColumnDefinition Width="*"></ColumnDefinition>
            </Grid.ColumnDefinitions>
            <Button Grid.Column="0" Content="Speichern" Click="Save_Click" Margin="0,0,5,0"></Button>
            <Button Grid.Column="1" Content="Löschen" Click="Delete_Click" Margin="5,0,0,0"></Button>
        </Grid>
    </StackPanel>
</Window>