diff --git a/WGneu/App.xaml b/WGneu/App.xaml
index 5258fea..3be84f8 100644
--- a/WGneu/App.xaml
+++ b/WGneu/App.xaml
@@ -11,5 +11,13 @@
                 <ui:XamlControlsResources />
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>-->
+        <DataTemplate x:Key="PostalDestComboBoxTemplate">
+            <StackPanel Orientation="Horizontal">
+                <TextBlock Text="{Binding Dest}"/>
+                <TextBlock Text=" ("/>
+                <TextBlock Text="{Binding Ort.Name}"/>
+                <TextBlock Text=")"/>
+            </StackPanel>
+        </DataTemplate>
     </Application.Resources>
 </Application>
diff --git a/WGneu/MainWindow.xaml.cs b/WGneu/MainWindow.xaml.cs
index 3a30967..ba87803 100644
--- a/WGneu/MainWindow.xaml.cs
+++ b/WGneu/MainWindow.xaml.cs
@@ -25,7 +25,7 @@ namespace WGneu
     /// </summary>
     public partial class MainWindow : Window
     {
-        private readonly WGContext _context = new WGContext();
+        private readonly WgContext _context = new WgContext();
         private CollectionViewSource countryViewSource;
         public MainWindow()
         {
diff --git a/WGneu/MemberAddWindow.xaml.cs b/WGneu/MemberAddWindow.xaml.cs
index 476d4d7..7e391c7 100644
--- a/WGneu/MemberAddWindow.xaml.cs
+++ b/WGneu/MemberAddWindow.xaml.cs
@@ -21,11 +21,11 @@ namespace WGneu
     /// </summary>
     public partial class MemberAddWindow : Window
     {
-        private WGContext _context;
+        private WgContext _context;
         private readonly Member member = new Member();
         public event EventHandler Event;
 
-        public MemberAddWindow(WGContext context)
+        public MemberAddWindow(WgContext context)
         {
             this._context = context;
 
diff --git a/WGneu/MemberEditWindow.xaml.cs b/WGneu/MemberEditWindow.xaml.cs
index bcc1b2d..780d9b8 100644
--- a/WGneu/MemberEditWindow.xaml.cs
+++ b/WGneu/MemberEditWindow.xaml.cs
@@ -22,11 +22,11 @@ namespace WGneu
     /// </summary>
     public partial class MemberEditWindow : Window
     {
-        private WGContext _context;
+        private WgContext _context;
         private readonly Member member;
         public event EventHandler Event;
 
-        public MemberEditWindow(Member member, WGContext context)
+        public MemberEditWindow(Member member, WgContext context)
         {
             this._context= context;
             this.member = member;
diff --git a/WGneu/MemberListWindow.xaml b/WGneu/MemberListWindow.xaml
index 0a00c3c..9d715df 100644
--- a/WGneu/MemberListWindow.xaml
+++ b/WGneu/MemberListWindow.xaml
@@ -23,8 +23,7 @@
         <TextBox x:Name="FamilyName" HorizontalAlignment="Left" Margin="351,129,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="183" IsReadOnly="True"/>
         <Button x:Name="Edit_Member" Content="Mitglied bearbeiten" HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="130,407,0,20" Click="Edit_Member_Button_Click" IsEnabled="False" FontSize="14" Padding="3,3,3,3"/>
         <Button x:Name="Add_Member" Content="Mitglied erstellen" HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10,407,0,20" Click="Add_Member_Button_Click" FontSize="14" Padding="3,3,3,3"/>
-        <TextBox x:Name="Plz" HorizontalAlignment="Left" Margin="351,191,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
-        <ComboBox x:Name="Ort" HorizontalAlignment="Left" Margin="498,189,0,0" VerticalAlignment="Top" Width="120" ItemTemplate="{Binding Name}"/>
-
+        <TextBox x:Name="Plz" HorizontalAlignment="Left" Margin="351,191,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" TextChanged="Plz_TextChanged"/>
+        <ComboBox x:Name="Ort" HorizontalAlignment="Left" Margin="498,189,0,0" VerticalAlignment="Top" Width="200" ItemTemplate="{StaticResource PostalDestComboBoxTemplate}"/>
     </Grid>
 </Window>
diff --git a/WGneu/MemberListWindow.xaml.cs b/WGneu/MemberListWindow.xaml.cs
index 7495740..7c75530 100644
--- a/WGneu/MemberListWindow.xaml.cs
+++ b/WGneu/MemberListWindow.xaml.cs
@@ -23,7 +23,7 @@ namespace WGneu
     /// </summary>
     public partial class MemberListWindow : Window
     {
-        private readonly WGContext _context = new WGContext();
+        private readonly WgContext _context = new WgContext();
 
         public MemberListWindow()
         {
@@ -48,16 +48,36 @@ namespace WGneu
             GivenName.Text = m.GivenName;
             FamilyName.Text = m.FamilyName;
 
-            AT_Plz p = m.PostalDest.Plz(_context);
-            Plz.Text = p.Plz.ToString();
+            AT_Plz? p = m.PostalDest.Plz(_context);
+            if (p != null)
+            {
+                Plz.Text = p.Plz.ToString();
 
-            var o = p.Orte(_context);
-            Ort.ItemsSource = o;
-            Ort.
+                var o = p.Orte(_context);
+                Ort.ItemsSource = o;
+                Ort.SelectedItem = p;
+            }
+            else
+            {
+                Ort.ItemsSource = null;
+                Ort.SelectedItem = null;
+            }
+          
 
             Edit_Member.IsEnabled = true;
         }
 
+        private void Plz_TextChanged(object sender, RoutedEventArgs e)
+        {
+            if (Plz.Text.Length == 4 && Plz.Text.All(char.IsDigit))
+            {
+                int plz = int.Parse(Plz.Text);
+                var o = _context.Postleitzahlen.Where(p => p.Plz == plz).ToHashSet();
+                Ort.ItemsSource = o;
+                Ort.SelectedItem = null;
+            }
+        }
+
         private void Edit_Member_Button_Click(object sender, RoutedEventArgs e)
         {
             Member m = (Member)MemberList.SelectedItem;
diff --git a/WGneu/Models/AT_Gem.cs b/WGneu/Models/AT_Gem.cs
index ffa55ad..135f0b7 100644
--- a/WGneu/Models/AT_Gem.cs
+++ b/WGneu/Models/AT_Gem.cs
@@ -15,6 +15,6 @@ namespace WGneu.Models
         public int Gkz { get; set; }
 
         [Column("name")]
-        public String Name { get; set; }
+        public string Name { get; set; }
     }
 }
diff --git a/WGneu/Models/AT_Kg.cs b/WGneu/Models/AT_Kg.cs
index e6afee5..c2e86bf 100644
--- a/WGneu/Models/AT_Kg.cs
+++ b/WGneu/Models/AT_Kg.cs
@@ -18,7 +18,7 @@ namespace WGneu.Models
         public int Gkz { get; set; }
 
         [Column("name")]
-        public String Name { get; set; }
+        public string Name { get; set; }
 
         [ForeignKey("Gkz")]
         public virtual AT_Gem Gem { get; set; }
diff --git a/WGneu/Models/AT_Ort.cs b/WGneu/Models/AT_Ort.cs
index ba871be..1056bdc 100644
--- a/WGneu/Models/AT_Ort.cs
+++ b/WGneu/Models/AT_Ort.cs
@@ -21,7 +21,7 @@ namespace WGneu.Models
         public int KgNr { get; set; }
 
         [Column("name")]
-        public String Name { get; set; }
+        public string Name { get; set; }
 
         [ForeignKey("Gkz")]
         public virtual AT_Gem Gem { get; set; }
diff --git a/WGneu/Models/AT_Plz.cs b/WGneu/Models/AT_Plz.cs
index 1422cc7..3436c38 100644
--- a/WGneu/Models/AT_Plz.cs
+++ b/WGneu/Models/AT_Plz.cs
@@ -19,13 +19,13 @@ namespace WGneu.Models
         public int Okz { get; set; }
 
         [Column("country")]
-        public String CountryCode { get; }
+        public string CountryCode { get; }
 
         [Column("id")]
-        public String Id { get; }
+        public string Id { get; }
 
         [Column("dest")]
-        public String Dest { get; set; }
+        public string Dest { get; set; }
 
         [ForeignKey("Okz")]
         public virtual AT_Ort Ort { get; set; }
@@ -33,9 +33,9 @@ namespace WGneu.Models
         [ForeignKey("CountryCode")]
         public virtual Country Country { get; set; }
 
-        public ISet<AT_Ort> Orte(WGContext ctx)
+        public ISet<AT_Plz> Orte(WgContext ctx)
         {
-            return ctx.Postleitzahlen.Where(p => p.Plz == Plz).Select(p => p.Ort).ToHashSet();
+            return ctx.Postleitzahlen.Where(p => p.Plz == Plz).ToHashSet();
         }
    }
 }
diff --git a/WGneu/Models/Country.cs b/WGneu/Models/Country.cs
index cd7a811..6ba288b 100644
--- a/WGneu/Models/Country.cs
+++ b/WGneu/Models/Country.cs
@@ -12,16 +12,16 @@ namespace WGneu.Models
     public class Country
     {
         [Column("alpha2")]
-        public String Alpha2 { get; set; }
+        public string Alpha2 { get; set; }
 
         [Column("alpha3")]
-        public String Alpha3 { get; set; }
+        public string Alpha3 { get; set; }
 
         [Column("num")]
         public int Num { get; set; }
 
         [Column("name")]
-        public String Name { get; set; }
+        public string Name { get; set; }
 
         [Column("is_visible")]
         public int IsVisible { get; set; }
diff --git a/WGneu/Models/Member.cs b/WGneu/Models/Member.cs
index 1404a7a..35d0bc9 100644
--- a/WGneu/Models/Member.cs
+++ b/WGneu/Models/Member.cs
@@ -15,29 +15,29 @@ namespace WGneu.Models
         public int MgNr { get; set; }
 
         [Column("given_name")]
-        public String GivenName { get; set; }
+        public string GivenName { get; set; }
 
         [Column("family_name")]
-        public String FamilyName { get; set; }
+        public string FamilyName { get; set; }
 
         [Column("zwstid")]
-        public String Zweigstelle { get; set; }
+        public string Zweigstelle { get; set; }
 
         [Column("country")]
-        public String CountryCode { get; set; }
+        public string CountryCode { get; set; }
         
         [Column("postal_dest")]
-        public String PostalDestId { get; set; }
+        public string PostalDestId { get; set; }
 
         [Column("address")]
-        public String Address { get; set; }
+        public string Address { get; set; }
 
         [Column("default_kgnr")]
         public int DefaultKgNr { get; set; }
 
         [ForeignKey("CountryCode")]
         public virtual Country Country { get; set; }
-
+         
         [ForeignKey("CountryCode, PostalDestId")]
         public virtual PostalDest PostalDest { get; set; }
 
diff --git a/WGneu/Models/PostalDest.cs b/WGneu/Models/PostalDest.cs
index aacb515..854b693 100644
--- a/WGneu/Models/PostalDest.cs
+++ b/WGneu/Models/PostalDest.cs
@@ -12,15 +12,15 @@ namespace WGneu.Models
     public class PostalDest
     {
         [Column("country")]
-        public String CountryCode { get; set; }
+        public string CountryCode { get; set; }
 
         [Column("id")]
-        public String Id { get; set; }
+        public string Id { get; set; }
 
         [ForeignKey("CountryCode")]
         public virtual Country Country { get; set; }
 
-        public AT_Plz? Plz(WGContext ctx)
+        public AT_Plz? Plz(WgContext ctx)
         {
             if (CountryCode != "AT") return null;
             return ctx.Postleitzahlen.Where(p => p.Id == Id).FirstOrDefault();
diff --git a/WGneu/WGContext.cs b/WGneu/WGContext.cs
index 3a0e71e..2d696fe 100644
--- a/WGneu/WGContext.cs
+++ b/WGneu/WGContext.cs
@@ -8,7 +8,7 @@ using WGneu.Models;
 
 namespace WGneu
 {
-    public class WGContext : DbContext
+    public class WgContext : DbContext
     {
         public DbSet<Country> Countries { get; set; }
         public DbSet<Member> Members { get; set; }
@@ -20,7 +20,7 @@ namespace WGneu
 
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {
-            optionsBuilder.UseSqlite("Data Source=\"C:\\Users\\tom\\Projects\\wgneu\\wgtest.sqlite3\"; foreign keys=true");
+            optionsBuilder.UseSqlite("Data Source=\"C:\\Users\\lorenz\\Desktop\\wgtest.sqlite3\"; foreign keys=true");
             optionsBuilder.UseLazyLoadingProxies();
         }
     }