diff --git a/WGneu/Print/Pdf.cs b/WGneu/Print/Pdf.cs
index ef5caae..a942662 100644
--- a/WGneu/Print/Pdf.cs
+++ b/WGneu/Print/Pdf.cs
@@ -14,7 +14,7 @@ namespace WGneu.Print {
         private static readonly string CHROMIUM = @"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe";
         private static IBrowser? Browser = null;
 
-        public static async void Init() {
+        public static async Task Init() {
             Browser = await Puppeteer.LaunchAsync(new LaunchOptions {
                 Headless = true,
                 ExecutablePath = CHROMIUM,
@@ -23,7 +23,7 @@ namespace WGneu.Print {
 
         public static async Task Convert(string path_html, string path_pdf) {
             if (Browser == null)
-                Init();
+                await Init();
 
             using var page = await Browser?.NewPageAsync();
             await page.GoToAsync("file://" + path_html);
diff --git a/WGneu/Utils.cs b/WGneu/Utils.cs
index b92fb82..b7fc5bd 100644
--- a/WGneu/Utils.cs
+++ b/WGneu/Utils.cs
@@ -35,6 +35,10 @@ namespace WGneu {
             }
         }
 
+        public static IEnumerable<T> FindVisualChilds<T>(DependencyObject depObj, IEnumerable<DependencyObject> exempt) where T : DependencyObject {
+            return FindVisualChilds<T>(depObj).Where(c => !exempt.Contains(c));
+        }
+
         public static int Modulo(string a, int b) {
             if (!a.All(char.IsDigit))
                 throw new ArgumentException("First argument has to be a decimal string");
diff --git a/WGneu/Windows/MemberListWindow.xaml.cs b/WGneu/Windows/MemberListWindow.xaml.cs
index 3fb6dd5..8891672 100644
--- a/WGneu/Windows/MemberListWindow.xaml.cs
+++ b/WGneu/Windows/MemberListWindow.xaml.cs
@@ -24,17 +24,23 @@ namespace WGneu.Windows {
         private bool IsEditing = false;
         private bool IsCreating = false;
         private List<string> TextFilter = new();
+        private readonly Control[] ExemptInputs;
         private readonly Dictionary<Control, bool> Valid = new();
         private readonly Dictionary<Control, object?> OriginalValues = new();
-        private static readonly RoutedCommand CtrlF = new();
+        private readonly RoutedCommand CtrlF = new();
         private readonly WgContext Context = new();
 
         public MemberListWindow() {
             InitializeComponent();
             CtrlF.InputGestures.Add(new KeyGesture(Key.F, ModifierKeys.Control));
             CommandBindings.Add(new CommandBinding(CtrlF, FocusSearchInput));
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") Valid[tb] = true;
+            ExemptInputs = new Control[] {
+                SearchInput, ActiveMemberInput, MemberList,
+                NewMemberButton, EditMemberButton, DeleteMemberButton,
+                ResetButton, SaveButton, CancelButton
+            };
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                Valid[tb] = true;
         }
 
         private void Window_Loaded(object sender, RoutedEventArgs e) {
@@ -86,13 +92,13 @@ namespace WGneu.Windows {
         }
 
         private void ClearInputStates() {
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") Utils.ClearInputState(tb);
-            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this))
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                Utils.ClearInputState(tb);
+            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this, ExemptInputs))
                 Utils.ClearInputState(cb);
-            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this))
-                if (cb.Name != "ActiveMemberInput") Utils.ClearInputState(cb);
-            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this))
+            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this, ExemptInputs))
+                Utils.ClearInputState(cb);
+            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this, ExemptInputs))
                 Utils.ClearInputState(rb);
         }
 
@@ -305,24 +311,24 @@ namespace WGneu.Windows {
         }
 
         private void LockInputs() {
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") tb.IsReadOnly = true;
-            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this))
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                tb.IsReadOnly = true;
+            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this, ExemptInputs))
                 cb.IsEnabled = false;
-            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this))
-                if (cb.Name != "ActiveMemberInput") cb.IsEnabled = false;
-            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this))
+            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this, ExemptInputs))
+                cb.IsEnabled = false;
+            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this, ExemptInputs))
                 rb.IsEnabled = false;
         }
 
         private void UnlockInputs() {
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") tb.IsReadOnly = false;
-            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this))
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                tb.IsReadOnly = false;
+            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this, ExemptInputs))
                 cb.IsEnabled = true;
-            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this))
-                if (cb.Name != "ActiveMemberInput") cb.IsEnabled = true;
-            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this))
+            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this, ExemptInputs))
+                cb.IsEnabled = true;
+            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this, ExemptInputs))
                 rb.IsEnabled = true;
         }
 
@@ -387,31 +393,31 @@ namespace WGneu.Windows {
                 case "email": ContactEmailInput.IsChecked = true; break;
             }
 
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") OriginalValues[tb] = tb.Text;
-            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this))
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                OriginalValues[tb] = tb.Text;
+            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this, ExemptInputs))
                 OriginalValues[cb] = cb.SelectedItem;
-            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this))
-                if (cb.Name != "ActiveMemberInput") OriginalValues[cb] = (cb.IsChecked ?? false) ? bool.TrueString : null;
-            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this))
+            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this, ExemptInputs))
+                OriginalValues[cb] = (cb.IsChecked ?? false) ? bool.TrueString : null;
+            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this, ExemptInputs))
                 OriginalValues[rb] = (rb.IsChecked ?? false) ? bool.TrueString : null;
         }
 
         private void ClearInputs() {
-            foreach (var tb in Utils.FindVisualChilds<TextBox>(this))
-                if (tb.Name != "SearchInput") tb.Text = "";
-            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this))
-                cb.SelectedItem = null;
-            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this))
-                if (cb.Name != "ActiveMemberInput") cb.IsChecked = false;
-            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this))
-                rb.IsChecked = false;
             OriginalValues.Clear();
+            foreach (var tb in Utils.FindVisualChilds<TextBox>(this, ExemptInputs))
+                tb.Text = "";
+            foreach (var cb in Utils.FindVisualChilds<ComboBox>(this, ExemptInputs))
+                cb.SelectedItem = null;
+            foreach (var cb in Utils.FindVisualChilds<CheckBox>(this, ExemptInputs))
+                cb.IsChecked = false;
+            foreach (var rb in Utils.FindVisualChilds<RadioButton>(this, ExemptInputs))
+                rb.IsChecked = false;
         }
 
         private bool IsValid() {
             return Valid.All(kv => kv.Value) &&
-                Utils.FindVisualChilds<ComboBox>(this).All(cb => cb.ItemsSource == null || cb.SelectedItem != null);
+                Utils.FindVisualChilds<ComboBox>(this, ExemptInputs).All(cb => cb.ItemsSource == null || cb.SelectedItem != null);
         }
 
         private void UpdateButtons() {
@@ -439,10 +445,10 @@ namespace WGneu.Windows {
 
         private bool HasChanged() {
             return !IsValid() ||
-                Utils.FindVisualChilds<TextBox>(this).Any(InputHasChanged) ||
-                Utils.FindVisualChilds<ComboBox>(this).Any(InputHasChanged) ||
-                Utils.FindVisualChilds<CheckBox>(this).Any(InputHasChanged) ||
-                Utils.FindVisualChilds<RadioButton>(this).Any(InputHasChanged);
+                Utils.FindVisualChilds<TextBox>(this, ExemptInputs).Any(InputHasChanged) ||
+                Utils.FindVisualChilds<ComboBox>(this, ExemptInputs).Any(InputHasChanged) ||
+                Utils.FindVisualChilds<CheckBox>(this, ExemptInputs).Any(InputHasChanged) ||
+                Utils.FindVisualChilds<RadioButton>(this, ExemptInputs).Any(InputHasChanged);
         }
 
         private void UpdatePlz(TextBox plzInput, ComboBox ortInput) {