<Window x:Class="WpfClient.MapView"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MapView" Height="343" Width="709" ResizeMode="NoResize" ShowInTaskbar="False">
    <Grid DataContext="{Binding Path = Map}"> 
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="33" />
        </Grid.RowDefinitions>
        
        <TextBox Height="23" HorizontalAlignment="Right" Margin="0,102,48,0" Name="textBox1" Text="{Binding Path=Name}" VerticalAlignment="Top" Width="187" />
        <Label Content="Название:" Height="28" HorizontalAlignment="Left" Margin="378,100,0,0" Name="label1" VerticalAlignment="Top" Width="68" />
        <Label Content="Склад:" Height="28" HorizontalAlignment="Left" Margin="378,131,0,0" Name="label2" VerticalAlignment="Top" Width="68" />
        <ComboBox DisplayMemberPath="Name1" Height="23" HorizontalAlignment="Left" ItemsSource="{Binding Path=WHouses}" Margin="452,131,0,0" Name="comboBox1" SelectedValuePath="Id1" VerticalAlignment="Top" Width="144" />
        <Button Grid.Row="1" Content="Сохранить" Height="23" HorizontalAlignment="Left" Margin="268,0,0,0" Name="btnSave" VerticalAlignment="Top" Width="75" />
        <Button Grid.Row="1" Content="Отменить" Height="23" HorizontalAlignment="Left" Margin="345,0,0,0" Name="btnCancel" VerticalAlignment="Top" Width="75" />
    </Grid>
</Window>

public class MapViewModel
{
    MapGate mapGate;

    public Map Map { get; set; }
    public List<WHouse> WHouses { get; set; }

    public MapViewModel(int MapID)
    {
        mapGate = new MapGate();
        this.Map = mapGate.GetMap(MapID);

        Init();
    }

    public MapViewModel()
    {
        Init();
    }

    void Init()
    {
        WHouseGate whouseGate = new WHouseGate();
        WHouses = whouseGate.GetWHouseList();
    }
}

<MyControl MyProperty="{Binding Map.MapInnerProperty}"/>

public Map Map
{
    get { return map; }
    set
    {
        map = value;
        OnPropertyChanged("Map");
    }
}