diff --git a/Elwig/Documents/MemberDataSheet.cshtml b/Elwig/Documents/MemberDataSheet.cshtml
index af70cfb..98b6675 100644
--- a/Elwig/Documents/MemberDataSheet.cshtml
+++ b/Elwig/Documents/MemberDataSheet.cshtml
@@ -16,7 +16,7 @@
                 <th>Mitglieds-Nr.</th>
                 <td>@Model.Member.MgNr</td>
                 <th>Vorgänger MgNr.</th>
-                <td>@(Model.Member.PredecessorMgNr != null ? Model.Member.PredecessorMgNr : "-")</td>
+                <td>@Model.Member.PredecessorMgNr</td>
             </tr>
             <tr>
                 <th>Titel (vorangestellt)</th>
@@ -36,7 +36,7 @@
             </tr>
             <tr>
                 <th>Geburtsjahr/-tag</th>
-                <td colspan="3">@(Model.Member.Birthday == null ? "-" : string.Join('.', Model.Member.Birthday.Split('-').Reverse()))</td>
+                <td colspan="3">@(string.Join('.', Model.Member.Birthday?.Split('-')?.Reverse()??Array.Empty<string>()))</td>
             </tr>
         </tbody>
 
diff --git a/Elwig/Windows/MemberAdminWindow.xaml b/Elwig/Windows/MemberAdminWindow.xaml
index 1af994b..d16de83 100644
--- a/Elwig/Windows/MemberAdminWindow.xaml
+++ b/Elwig/Windows/MemberAdminWindow.xaml
@@ -53,7 +53,8 @@
             <MenuItem Header="Drucken">
                 <MenuItem x:Name="Menu_Print_Letterhead" Header="Briefkopf drucken"
                           Click="Menu_Print_Letterhead_Click"/>
-                <MenuItem Header="Stammdatenblatt drucken" Click="Menu_Print_Memberdata_Click"/>
+                <MenuItem x:Name="Menu_Show_Memberdata" Header="Stammdatenblatt anzeigen" Click="Menu_Show_Memberdata_Click"/>
+                <MenuItem x:Name="Menu_Print_Memberdata" Header="Stammdatenblatt drucken" Click="Menu_Print_Memberdata_Click"/>
                 <MenuItem Header="Briefköpfe drucken">
                     <MenuItem x:Name="Menu_Print_Letterheads_MgNr" Header="nach MgNr. sortiert" IsEnabled="False" Tag="Print"
                               Click="Menu_Print_Letterheads_MgNr_Click"/>
diff --git a/Elwig/Windows/MemberAdminWindow.xaml.cs b/Elwig/Windows/MemberAdminWindow.xaml.cs
index c6ca2d3..2e881a1 100644
--- a/Elwig/Windows/MemberAdminWindow.xaml.cs
+++ b/Elwig/Windows/MemberAdminWindow.xaml.cs
@@ -57,6 +57,8 @@ namespace Elwig.Windows {
         private void Window_Loaded(object sender, RoutedEventArgs evt) {
             Menu_Print_Letterheads_MgNr.IsEnabled = App.IsPrintingReady;
             Menu_Print_Letterheads_Name.IsEnabled = App.IsPrintingReady;
+            Menu_Show_Memberdata.IsEnabled = App.IsPrintingReady;
+            Menu_Print_Memberdata.IsEnabled = App.IsPrintingReady;
 
             ActiveMemberInput.IsChecked = true;
             UpdatePhoneNrInputVisibility();
@@ -351,6 +353,16 @@ namespace Elwig.Windows {
             }
         }
 
+        private async void Menu_Show_Memberdata_Click(object sender, RoutedEventArgs evt) {
+            if (MemberList.SelectedItem is not Member m)
+                return;
+            Mouse.OverrideCursor = Cursors.AppStarting;
+            using var doc = new MemberDataSheet(m, Context);
+            await doc.Generate();
+            Mouse.OverrideCursor = null;
+            doc.Show();
+        }
+
         private void FocusSearchInput(object sender, RoutedEventArgs evt) {
             if (!IsEditing && !IsCreating) {
                 SearchInput.Focus();
@@ -637,6 +649,8 @@ namespace Elwig.Windows {
 
             Menu_Member_SendEmail.IsEnabled = m.EmailAddresses.Count > 0;
             Menu_Print_Letterhead.IsEnabled = true;
+            Menu_Show_Memberdata.IsEnabled = true;
+            Menu_Print_Memberdata.IsEnabled = true;
 
             FinishInputFilling();
         }
@@ -644,6 +658,8 @@ namespace Elwig.Windows {
         new protected void ClearInputs(bool validate = false) {
             Menu_Member_SendEmail.IsEnabled = false;
             Menu_Print_Letterhead.IsEnabled = false;
+            Menu_Show_Memberdata.IsEnabled = false;
+            Menu_Print_Memberdata.IsEnabled = false;
             StatusDeliveriesLastSeason.Text = $"Lieferungen ({Utils.CurrentLastSeason - 1}): -";
             StatusDeliveriesThisSeason.Text = $"Lieferungen ({Utils.CurrentLastSeason}): -";
             StatusAreaCommitment.Text = "Gebundene Fläche: -";