[chore:] ui element disableing (customer settings)

MainWindow.axaml

@@ -485,7 +485,7 @@
                                                  TextChanged="TbSettingsCustomerSenderAddress_OnTextChanged"
                                                  x:Name="TbSettingsCustomerSenderAddress" />
                                     </Grid>
-                                    <Grid ColumnDefinitions="150,*,Auto">
+                                    <Grid ColumnDefinitions="150,*,Auto" x:Name="GrdCSVDividerButtonsAndTb">
                                         <Label Content="CSV-Trennzeichen" />
                                         <TextBox Grid.Column="1" Watermark=","
                                                  HorizontalAlignment="Stretch" Margin="0,0,5,0"

MainWindow.axaml.cs

@@ -28,6 +28,7 @@ public partial class MainWindow : Window
         Logger.Log($"Session on {DateTime.Now:G}");
         Logger.Log("Initializing...");
         InitializeComponent();
+        SetSettingsCustomerEnabledState(false);
         //Hide();
         
         var s = new StartupWindow();
@@ -484,6 +485,7 @@ public partial class MainWindow : Window
 
     private void LstSettingsCustomers_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
     {
+        SetSettingsCustomerEnabledState(false);
         if (LstSettingsCustomers.SelectedIndex < 0) return;
         Settings._instance.customers.current =
             ((Customer)LstSettingsCustomers.SelectedItems[0]);
@@ -498,9 +500,19 @@ public partial class MainWindow : Window
                     TbSettingsCustomerPatchInfo.Text = Settings._instance.customers.current.patch.ToString();
                 else
                     TbSettingsCustomerPatchInfo.Text = "";
+        SetSettingsCustomerEnabledState();
             //}
     }
 
+    private void SetSettingsCustomerEnabledState(bool enable = true)
+    {
+        List<Object> nboom = new() { BtnSettingsImportCustomerAddressPatch, GrdCSVDividerButtonsAndTb, TbSettingsCustomerDescription, TbSettingsCustomerName, BtnDeleteCustomer, TbSettingsCustomerSenderAddress};
+        foreach (var obj in nboom)
+        {
+            (obj as Control).IsEnabled = enable;
+        }
+    }
+
     private async void EditButton_Click(object? sender, RoutedEventArgs e)
     {
         if (string.IsNullOrWhiteSpace(_selectedWikiFilePath))