diff --git a/MainWindow.axaml.cs b/MainWindow.axaml.cs
index b651c05..5a1a49a 100644
--- a/MainWindow.axaml.cs
+++ b/MainWindow.axaml.cs
@@ -1,431 +1,431 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using Avalonia.Controls;
-using Avalonia.Input;
-using Avalonia.Interactivity;
-using Avalonia.Platform.Storage;
-
-namespace spplus;
-
-public partial class MainWindow : Window
-{
-    public static MainWindow Instance { get; set; }
-    public static string ApplicationVersion = "v1.1.17";
-    public MainWindow()
-    {
-        InitializeComponent();
-        Settings.ImportInitial();
-        Instance = this;
-        RefreshCoursesList();
-        try
-        {
-            NudSportMaxPerSemester.Value = Settings.Instance.NumCoursesPerSemester;
-        } catch {}
-    }
-
-    private void MnuExpSettings_OnClick(object? sender, RoutedEventArgs e)
-    {
-        var res = MessageBox.Show(this, "Dieses Feature ist noch nicht implementiert", "Fehlend");
-    }
-
-    private void MnuExit_OnClick(object? sender, RoutedEventArgs e)
-    {
-        Environment.Exit(0);
-    }
-
-    private void MnuHelp_OnClick(object? sender, RoutedEventArgs e)
-    {
-        try
-        {
-            Process.Start(new ProcessStartInfo
-            {
-                FileName = "https://git.mypapercloud.de/fierke/spplus/wiki",
-                UseShellExecute = true 
-            });
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
-        }
-    }
-
-    private void MnuGit_OnClick(object? sender, RoutedEventArgs e)
-    {
-        try
-        {
-            Process.Start(new ProcessStartInfo
-            {
-                FileName = "https://git.mypapercloud.de/fierke/spplus",
-                UseShellExecute = true 
-            });
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
-        }
-    }
-
-    private void MnuAbout_OnClick(object? sender, RoutedEventArgs e)
-    {
-        Window w = new();
-        w.WindowState = WindowState.Normal;
-        w.WindowStartupLocation = WindowStartupLocation.CenterScreen;
-        w.Width = 300;
-        w.Height = 120;
-        Grid g = new();
-        TextBlock tb = new()
-        {
-            Text = $"spplus {MainWindow.ApplicationVersion}\n(c)2026 MyPapertown, Elias Fierke"
-        };
-        g.Children.Add(tb);
-        w.Content = g;
-        w.Show();
-    }
-
-    private async void BtnImport_OnClick(object? sender, RoutedEventArgs e)
-    {
-        var topLevel = GetTopLevel(this);
-        var file = await topLevel!.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
-        {
-            Title = "CSV-Datei auswählen",
-            AllowMultiple = false,
-            FileTypeFilter = new[]
-            {
-                new FilePickerFileType(".csv-Datei")
-                {
-                    Patterns = new[] { "*.csv" }
-                }
-            }
-        });
-
-        if (file == null) return;
-        if (file.Count == 0) return;
-
-        var imported_students = import.ImportStudentsFromFile(file[0].Path.LocalPath.ToString());
-        foreach (var s in imported_students)
-        {
-            Settings.Instance.Students.Add(s);
-        }
-        RefreshImportedStudentList();
-
-    }
-
-    private void RefreshImportedStudentList()
-    {
-        LbStudentsImported.Items.Clear();
-        int count_selected = 0;
-        foreach (var s in Settings.Instance.Students)
-        {
-            LbStudentsImported.Items.Add(s);
-            count_selected += s.SelectedCourseNames.Count;
-        }
-        LblStudentAmount.Content =  Settings.Instance.Students.Count.ToString();
-        LblSelectedAmount.Content =  count_selected.ToString();
-        
-        List<(Sport, List<string>)> initial_sportlist = new();
-        foreach (var sp in Settings.Instance.Sports)
-        {
-            initial_sportlist.Add((sp, new()));
-        }
-        foreach (Student s in Settings.Instance.Students)
-        {
-            foreach (var sp in s.SelectedCourseNames)
-            {
-                foreach (var item in initial_sportlist)
-                {
-                    if (item.Item1.AlternativeNames.Contains(sp))
-                    {
-                        item.Item2.Add(s.ID);
-                        break;
-                    }
-                }
-            }
-        }
-
-        LblNumVoted.Content = "";
-        foreach (var s in initial_sportlist)
-        {
-            LblNumVoted.Content += $"{s.Item1.Name}: {s.Item2.Count}\n";
-        }
-        
-    }
-
-    private void BtnCraftCourses_OnClick(object? sender, RoutedEventArgs e)
-    {
-        CourseCrafter.Craft();
-        RefreshResultView();
-        TclMainView.SelectedIndex = 2;
-        //TbiResults.Focus();
-    }
-
-    private void RefreshResultView()
-    {
-        LbResult.Items.Clear();
-        foreach (Student s in Settings.Instance.Students)
-        {
-            try
-            {
-                for(int i = 0; i<s.Result.Count;i++)
-                {
-                    LbResult.Items.Add($"{s.Name} ({s.ID}) - {i+1}. Semester: {s.Result[i]}");
-                }
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine(ex.StackTrace);
-            }
-        }
-        
-        TbResultStatistics.Text = CourseCrafter.GenerateStatistics();
-    }
-
-    private void LbStudentsImported_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
-    {
-        Prepare();
-        var stud = (Student)LbStudentsImported.SelectedItem;
-        if (stud == null)
-        {
-            TbStudentName.Text = string.Empty;
-            TbStudentID.Text = string.Empty;
-            SetEmpty();
-            return;
-        };
-
-        try
-        {
-            TbStudentName.Text = stud.Name;
-            TbStudentID.Text = stud.ID;
-            LblSport1.Content = stud.SelectedCourseNames[0];
-            LblSport2.Content = stud.SelectedCourseNames[1];
-            LblSport3.Content = stud.SelectedCourseNames[2];
-            LblSport4.Content = stud.SelectedCourseNames[3];
-        }
-        catch
-        {
-            SetEmpty();
-        }
-
-        return;
-        
-        void SetEmpty()
-        {
-            if(LblSport1.Content == "null") LblSport1.Content = "ungewählt";
-            if(LblSport2.Content == "null") LblSport2.Content = "ungewählt";
-            if(LblSport3.Content == "null") LblSport3.Content = "ungewählt";
-            if(LblSport4.Content == "null") LblSport4.Content = "ungewählt";
-        }
-
-        void Prepare()
-        {
-            LblSport1.Content = "null";
-            LblSport2.Content = "null";
-            LblSport3.Content = "null";
-            LblSport4.Content = "null";
-        }
-        
-    }
-
-    private void TbStudentName_OnTextChanged(object? sender, TextChangedEventArgs e)
-    {
-        try
-        {
-            ((Student)LbStudentsImported.SelectedItem).Name = TbStudentName.Text;
-        }
-        catch
-        {
-            
-        }
-    }
-    private void TbStudentID_OnTextChanged(object? sender, TextChangedEventArgs e)
-    {
-        try
-        {
-            ((Student)LbStudentsImported.SelectedItem).ID = TbStudentID.Text;
-        }
-        catch
-        {
-            
-        }
-    }
-
-    private void BtnImportDefaultCourses_OnClick(object? sender, RoutedEventArgs e)
-    {
-        Settings.ImportInitial();
-        RefreshCoursesList();
-    }
-
-    private void RefreshCoursesList()
-    {
-        LbSportCourses.Items.Clear();
-        foreach (var sp in Settings.Instance.Sports)
-        {
-            LbSportCourses.Items.Add(sp);
-        }
-    }
-
-
-    private void LbSportCourses_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
-    {
-        if (LbSportCourses.SelectedItem != null)
-        {
-            if (LbSportCourses.SelectedItem is Sport item)
-            {
-                LblSportID.Content = item.ID;
-                TbSportName.Text = item.Name;
-                NudSportMaxStudents.Value = item.MaxStudents;
-                NudSportMinStudents.Value = item.MinStudents;
-                NudAmountCoursesSem1.Value = item.Semester[0];
-                NudAmountCoursesSem2.Value = item.Semester[1];
-                NudAmountCoursesSem3.Value = item.Semester[2];
-                NudAmountCoursesSem4.Value = item.Semester[3];
-                // LbAlternativeCourses.Items.Clear();
-                // foreach (var alternative in item.AlternativeCourses)
-                // {
-                //     LbAlternativeCourses.Items.Add(Settings.GetSportNameFromID(alternative));
-                // }
-                LbAlternativeNames.Items.Clear();
-                foreach (var alternative in item.AlternativeNames)
-                {
-                    LbAlternativeNames.Items.Add(alternative);
-                }
-            }
-        }
-    }
-
-    private void TbSportName_OnTextChanged(object? sender, TextChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).Name = TbSportName.Text;
-        } catch {}
-    }
-
-    private void NudSportMaxStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).MaxStudents = Convert.ToInt32(NudSportMaxStudents.Value);
-        } catch {}
-    }
-
-    private void NudSportMinStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).MinStudents = Convert.ToInt32(NudSportMinStudents.Value);
-        } catch {}
-    }
-
-    private void NudAmountCoursesSem1_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).Semester[0] = Convert.ToInt32(NudAmountCoursesSem1.Value);
-        } catch {}
-    }
-
-    private void NudAmountCoursesSem2_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).Semester[1] = Convert.ToInt32(NudAmountCoursesSem2.Value);
-        } catch {}
-    }
-
-    private void NudAmountCoursesSem3_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).Semester[2] = Convert.ToInt32(NudAmountCoursesSem3.Value);
-        } catch {}
-    }
-
-    private void NudAmountCoursesSem4_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).Semester[3] = Convert.ToInt32(NudAmountCoursesSem4.Value);
-        } catch {}
-    }
-
-    private void BtnAlternativeCourseAdd_OnClick(object? sender, RoutedEventArgs e)
-    {
-        try
-        {
-            //((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
-            //TbSportAlternativeCourse.Text = "";
-        } catch {}
-    }
-
-    private void BtnAlternativeNameAdd_OnClick(object? sender, RoutedEventArgs e)
-    {
-        try
-        {
-            ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
-            LbAlternativeNames.Items.Add(TbSportAlternativeName.Text);
-            TbSportAlternativeName.Text = "";
-            
-            int curr_selected = LbSportCourses.SelectedIndex; 
-            RefreshCoursesList();
-            LbSportCourses.SelectedIndex = curr_selected;
-        } catch {}
-    }
-
-    private void BtnAlternativeNameRemove_OnClick(object? sender, RoutedEventArgs e)
-    {
-        //try
-        //{
-            LbAlternativeNames.Items.Remove(LbAlternativeNames.SelectedItem);
-            ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Clear();
-            foreach (string s in LbAlternativeNames.Items)
-            {
-                ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(s);
-            }
-
-            int curr_selected = LbSportCourses.SelectedIndex; 
-            RefreshCoursesList();
-            LbSportCourses.SelectedIndex = curr_selected;
-            //} catch (Exception ex) {}
-    }
-
-    private async void BtnClearCourseList_OnClick(object? sender, RoutedEventArgs e)
-    {
-        var result = await MessageBox.Show(this,
-            "Möchten Sie wirklich alle Kurse löschen?\n Dies kann nicht rückgängig gemacht werden.",
-            "Wirklich fortfahren?", MessageBoxButton.YesNo);
-        if (result == MessageBoxResult.Yes)
-        {
-            Settings.Instance.Sports.Clear();
-            RefreshCoursesList();    
-        }
-        
-    }
-
-    private void BtnDeleteSinleCourse_OnClick(object? sender, RoutedEventArgs e)
-    {
-        try
-        {
-            Settings.Instance.Sports.Remove(LbSportCourses.SelectedItem as Sport);
-            RefreshCoursesList();
-        } catch (Exception ex){}
-    }
-
-    private void BtnExportCoursePDF_OnClick(object? sender, RoutedEventArgs e)
-    {
-        // Export as PDF
-    }
-
-    private void NudSportMaxPerSemester_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
-    {
-        try
-        {
-            Settings.Instance.NumCoursesPerSemester = Convert.ToInt32(NudSportMaxPerSemester.Value);
-        } catch {}
-    }
-
-    private void BtnExportCourseCSV_OnClick(object? sender, RoutedEventArgs e)
-    {
-        // export as csv here
-    }
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Platform.Storage;
+
+namespace spplus;
+
+public partial class MainWindow : Window
+{
+    public static MainWindow Instance { get; set; }
+    public static string ApplicationVersion = "v1.1.17";
+    public MainWindow()
+    {
+        InitializeComponent();
+        Settings.ImportInitial();
+        Instance = this;
+        RefreshCoursesList();
+        try
+        {
+            NudSportMaxPerSemester.Value = Settings.Instance.NumCoursesPerSemester;
+        } catch {}
+    }
+
+    private void MnuExpSettings_OnClick(object? sender, RoutedEventArgs e)
+    {
+        var res = MessageBox.Show(this, "Dieses Feature ist noch nicht implementiert", "Fehlend");
+    }
+
+    private void MnuExit_OnClick(object? sender, RoutedEventArgs e)
+    {
+        Environment.Exit(0);
+    }
+
+    private void MnuHelp_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "https://git.mypapercloud.de/fierke/spplus/wiki",
+                UseShellExecute = true 
+            });
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
+        }
+    }
+
+    private void MnuGit_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "https://git.mypapercloud.de/fierke/spplus",
+                UseShellExecute = true 
+            });
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
+        }
+    }
+
+    private void MnuAbout_OnClick(object? sender, RoutedEventArgs e)
+    {
+        Window w = new();
+        w.WindowState = WindowState.Normal;
+        w.WindowStartupLocation = WindowStartupLocation.CenterScreen;
+        w.Width = 300;
+        w.Height = 120;
+        Grid g = new();
+        TextBlock tb = new()
+        {
+            Text = $"spplus {MainWindow.ApplicationVersion}\n(c)2026 MyPapertown, Elias Fierke"
+        };
+        g.Children.Add(tb);
+        w.Content = g;
+        w.Show();
+    }
+
+    private async void BtnImport_OnClick(object? sender, RoutedEventArgs e)
+    {
+        var topLevel = GetTopLevel(this);
+        var file = await topLevel!.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+        {
+            Title = "CSV-Datei auswählen",
+            AllowMultiple = false,
+            FileTypeFilter = new[]
+            {
+                new FilePickerFileType(".csv-Datei")
+                {
+                    Patterns = new[] { "*.csv" }
+                }
+            }
+        });
+
+        if (file == null) return;
+        if (file.Count == 0) return;
+
+        var imported_students = import.ImportStudentsFromFile(file[0].Path.LocalPath.ToString());
+        foreach (var s in imported_students)
+        {
+            Settings.Instance.Students.Add(s);
+        }
+        RefreshImportedStudentList();
+
+    }
+
+    private void RefreshImportedStudentList()
+    {
+        LbStudentsImported.Items.Clear();
+        int count_selected = 0;
+        foreach (var s in Settings.Instance.Students)
+        {
+            LbStudentsImported.Items.Add(s);
+            count_selected += s.SelectedCourseNames.Count;
+        }
+        LblStudentAmount.Content =  Settings.Instance.Students.Count.ToString();
+        LblSelectedAmount.Content =  count_selected.ToString();
+        
+        List<(Sport, List<string>)> initial_sportlist = new();
+        foreach (var sp in Settings.Instance.Sports)
+        {
+            initial_sportlist.Add((sp, new()));
+        }
+        foreach (Student s in Settings.Instance.Students)
+        {
+            foreach (var sp in s.SelectedCourseNames)
+            {
+                foreach (var item in initial_sportlist)
+                {
+                    if (item.Item1.AlternativeNames.Contains(sp))
+                    {
+                        item.Item2.Add(s.ID);
+                        break;
+                    }
+                }
+            }
+        }
+
+        LblNumVoted.Content = "";
+        foreach (var s in initial_sportlist)
+        {
+            LblNumVoted.Content += $"{s.Item1.Name}: {s.Item2.Count}\n";
+        }
+        
+    }
+
+    private void BtnCraftCourses_OnClick(object? sender, RoutedEventArgs e)
+    {
+        CourseCrafter.Craft();
+        RefreshResultView();
+        TclMainView.SelectedIndex = 2;
+        //TbiResults.Focus();
+    }
+
+    private void RefreshResultView()
+    {
+        LbResult.Items.Clear();
+        foreach (Student s in Settings.Instance.Students)
+        {
+            try
+            {
+                for(int i = 0; i<s.Result.Length;i++)
+                {
+                    LbResult.Items.Add($"{s.Name} ({s.ID}) - {i+1}. Semester: {s.Result[i]}");
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.StackTrace);
+            }
+        }
+        
+        TbResultStatistics.Text = CourseCrafter.GenerateStatistics();
+    }
+
+    private void LbStudentsImported_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        Prepare();
+        var stud = (Student)LbStudentsImported.SelectedItem;
+        if (stud == null)
+        {
+            TbStudentName.Text = string.Empty;
+            TbStudentID.Text = string.Empty;
+            SetEmpty();
+            return;
+        };
+
+        try
+        {
+            TbStudentName.Text = stud.Name;
+            TbStudentID.Text = stud.ID;
+            LblSport1.Content = stud.SelectedCourseNames[0];
+            LblSport2.Content = stud.SelectedCourseNames[1];
+            LblSport3.Content = stud.SelectedCourseNames[2];
+            LblSport4.Content = stud.SelectedCourseNames[3];
+        }
+        catch
+        {
+            SetEmpty();
+        }
+
+        return;
+        
+        void SetEmpty()
+        {
+            if(LblSport1.Content == "null") LblSport1.Content = "ungewählt";
+            if(LblSport2.Content == "null") LblSport2.Content = "ungewählt";
+            if(LblSport3.Content == "null") LblSport3.Content = "ungewählt";
+            if(LblSport4.Content == "null") LblSport4.Content = "ungewählt";
+        }
+
+        void Prepare()
+        {
+            LblSport1.Content = "null";
+            LblSport2.Content = "null";
+            LblSport3.Content = "null";
+            LblSport4.Content = "null";
+        }
+        
+    }
+
+    private void TbStudentName_OnTextChanged(object? sender, TextChangedEventArgs e)
+    {
+        try
+        {
+            ((Student)LbStudentsImported.SelectedItem).Name = TbStudentName.Text;
+        }
+        catch
+        {
+            
+        }
+    }
+    private void TbStudentID_OnTextChanged(object? sender, TextChangedEventArgs e)
+    {
+        try
+        {
+            ((Student)LbStudentsImported.SelectedItem).ID = TbStudentID.Text;
+        }
+        catch
+        {
+            
+        }
+    }
+
+    private void BtnImportDefaultCourses_OnClick(object? sender, RoutedEventArgs e)
+    {
+        Settings.ImportInitial();
+        RefreshCoursesList();
+    }
+
+    private void RefreshCoursesList()
+    {
+        LbSportCourses.Items.Clear();
+        foreach (var sp in Settings.Instance.Sports)
+        {
+            LbSportCourses.Items.Add(sp);
+        }
+    }
+
+
+    private void LbSportCourses_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (LbSportCourses.SelectedItem != null)
+        {
+            if (LbSportCourses.SelectedItem is Sport item)
+            {
+                LblSportID.Content = item.ID;
+                TbSportName.Text = item.Name;
+                NudSportMaxStudents.Value = item.MaxStudents;
+                NudSportMinStudents.Value = item.MinStudents;
+                NudAmountCoursesSem1.Value = item.Semester[0];
+                NudAmountCoursesSem2.Value = item.Semester[1];
+                NudAmountCoursesSem3.Value = item.Semester[2];
+                NudAmountCoursesSem4.Value = item.Semester[3];
+                // LbAlternativeCourses.Items.Clear();
+                // foreach (var alternative in item.AlternativeCourses)
+                // {
+                //     LbAlternativeCourses.Items.Add(Settings.GetSportNameFromID(alternative));
+                // }
+                LbAlternativeNames.Items.Clear();
+                foreach (var alternative in item.AlternativeNames)
+                {
+                    LbAlternativeNames.Items.Add(alternative);
+                }
+            }
+        }
+    }
+
+    private void TbSportName_OnTextChanged(object? sender, TextChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Name = TbSportName.Text;
+        } catch {}
+    }
+
+    private void NudSportMaxStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).MaxStudents = Convert.ToInt32(NudSportMaxStudents.Value);
+        } catch {}
+    }
+
+    private void NudSportMinStudents_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).MinStudents = Convert.ToInt32(NudSportMinStudents.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem1_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[0] = Convert.ToInt32(NudAmountCoursesSem1.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem2_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[1] = Convert.ToInt32(NudAmountCoursesSem2.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem3_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[2] = Convert.ToInt32(NudAmountCoursesSem3.Value);
+        } catch {}
+    }
+
+    private void NudAmountCoursesSem4_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).Semester[3] = Convert.ToInt32(NudAmountCoursesSem4.Value);
+        } catch {}
+    }
+
+    private void BtnAlternativeCourseAdd_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            //((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
+            //TbSportAlternativeCourse.Text = "";
+        } catch {}
+    }
+
+    private void BtnAlternativeNameAdd_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(TbSportAlternativeName.Text);
+            LbAlternativeNames.Items.Add(TbSportAlternativeName.Text);
+            TbSportAlternativeName.Text = "";
+            
+            int curr_selected = LbSportCourses.SelectedIndex; 
+            RefreshCoursesList();
+            LbSportCourses.SelectedIndex = curr_selected;
+        } catch {}
+    }
+
+    private void BtnAlternativeNameRemove_OnClick(object? sender, RoutedEventArgs e)
+    {
+        //try
+        //{
+            LbAlternativeNames.Items.Remove(LbAlternativeNames.SelectedItem);
+            ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Clear();
+            foreach (string s in LbAlternativeNames.Items)
+            {
+                ((Sport)LbSportCourses.SelectedItem).AlternativeNames.Add(s);
+            }
+
+            int curr_selected = LbSportCourses.SelectedIndex; 
+            RefreshCoursesList();
+            LbSportCourses.SelectedIndex = curr_selected;
+            //} catch (Exception ex) {}
+    }
+
+    private async void BtnClearCourseList_OnClick(object? sender, RoutedEventArgs e)
+    {
+        var result = await MessageBox.Show(this,
+            "Möchten Sie wirklich alle Kurse löschen?\n Dies kann nicht rückgängig gemacht werden.",
+            "Wirklich fortfahren?", MessageBoxButton.YesNo);
+        if (result == MessageBoxResult.Yes)
+        {
+            Settings.Instance.Sports.Clear();
+            RefreshCoursesList();    
+        }
+        
+    }
+
+    private void BtnDeleteSinleCourse_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            Settings.Instance.Sports.Remove(LbSportCourses.SelectedItem as Sport);
+            RefreshCoursesList();
+        } catch (Exception ex){}
+    }
+
+    private void BtnExportCoursePDF_OnClick(object? sender, RoutedEventArgs e)
+    {
+        // Export as PDF
+    }
+
+    private void NudSportMaxPerSemester_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            Settings.Instance.NumCoursesPerSemester = Convert.ToInt32(NudSportMaxPerSemester.Value);
+        } catch {}
+    }
+
+    private void BtnExportCourseCSV_OnClick(object? sender, RoutedEventArgs e)
+    {
+        // export as csv here
+    }
 }
\ No newline at end of file
diff --git a/structs.cs b/structs.cs
index 0836287..e4828e9 100644
--- a/structs.cs
+++ b/structs.cs
@@ -59,7 +59,7 @@ public class Student
     public string ID { get; set; } = "";        // ID des Schüler (z.B. NolteSeb)
     public string Name { get; set; } = "";        // Name des Schülers
     public List<string> SelectedCourseNames { get; set; } = new();
-    public List<string>? Result { get; set; } = null;
+    public string[] Result { get; set; } = new string[4];
 
     public Student()
     {