commit 976b651e4b9d3f40f24064420ba90db6e99763da0a29554cc6bd345a6f148d57
Author: Black_Betty <Black_Betty@DESKTOP-GA9LVM3>
Date:   Tue Sep 29 19:19:16 2026 +0200

    Initial Fill

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3d1cb9c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,76 @@
+# .gitignore for Visual Studio / .NET projects
+# Generated minimal .gitignore
+
+## Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+.vs/
+*.user
+*.suo
+*.userosscache
+*.sln.docstates
+
+# Build results
+[Bb]in/
+[Oo]bj/
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# NuGet
+*.nupkg
+packages/
+
+# Visual Studio code coverage
+*.coverage
+*.coveragexml
+
+# MSTest test results
+TestResults/
+
+# Rider
+.idea/
+
+# Resharper
+_ReSharper*/
+*.[Rr]e[Ss]harper
+
+# DotCover
+*.dotCover
+
+# Others
+*.log
+*.tmp
+*.temp
+*.cache
+*.bak
+*.swp
+.DS_Store
+
+# Windows image file caches
+Thumbs.db
+
+# User-specific files
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+
+# IIS Express
+/.vs/**/applicationhost.config
+
+# Node
+node_modules/
+
+# git LFS
+*.psd
+
+# Ignore NuGet packages folder
+**/packages/*
+
+# Ignore published output
+publish/
+
+# Ignore JetBrains Rider settings
+.idea/
+
+# Keep the file simple; add more entries as needed
diff --git a/App.config b/App.config
new file mode 100644
index 0000000..8e915a1
--- /dev/null
+++ b/App.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
+    </startup>
+</configuration>
\ No newline at end of file
diff --git a/App.xaml b/App.xaml
new file mode 100644
index 0000000..dfba1c0
--- /dev/null
+++ b/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="TapeCatalog.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:TapeCatalog"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/App.xaml.cs b/App.xaml.cs
new file mode 100644
index 0000000..23187fe
--- /dev/null
+++ b/App.xaml.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace TapeCatalog
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}
diff --git a/MainWindow.xaml b/MainWindow.xaml
new file mode 100644
index 0000000..a89d789
--- /dev/null
+++ b/MainWindow.xaml
@@ -0,0 +1,62 @@
+<Window x:Class="TapeCatalog.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:TapeCatalog"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+        <TabControl>
+            <TabItem Header="SRC-ARC">
+                <Grid Background="#FFE5E5E5">
+                    <TextBox x:Name="SourceTextBox" HorizontalAlignment="Left" Margin="0,19,0,0" TextWrapping="Wrap" Text="Source Directory" VerticalAlignment="Top" Width="507" Height="20"/>
+                    <TextBox x:Name="ArchiveTextBox" HorizontalAlignment="Left" Height="20" Margin="0,56,0,0" TextWrapping="Wrap" Text="Archive Directory" VerticalAlignment="Top" Width="507"/>
+                    <Button x:Name="SourceSelect" Content="Select Directory" HorizontalAlignment="Left" Margin="512,19,0,0" VerticalAlignment="Top" Height="20" Click="SET_RES_DIR"/>
+                    <Button x:Name="ArchiveSelect" Content="Select Directory" HorizontalAlignment="Left" Margin="512,56,0,0" VerticalAlignment="Top" Height="20" Click="SET_ARC_DIR"/>
+                    <Button Content="Scan Source" HorizontalAlignment="Left" Height="22" Margin="700,146,0,0" VerticalAlignment="Top" Width="76" Click="SCAN_RES_DIR" RenderTransformOrigin="2.316,5.185" Grid.Column="1"/>
+                    <Button Content="Scan Archive" HorizontalAlignment="Left" Height="22" Margin="700,168,0,0" VerticalAlignment="Top" Width="76" Click="SCAN_ARC_DIR" Grid.Column="1"/>
+                    <Button Content="Clear List" HorizontalAlignment="Left" Height="22" Margin="700,190,0,0" VerticalAlignment="Top" Width="76" Click="CLEAR_FILES" Grid.Column="1"/>
+                    <Button Content="Verify Sizes" HorizontalAlignment="Left" Height="22" Margin="700,212,0,0" VerticalAlignment="Top" Width="76" Click="VERIFY_SIZES" Grid.Column="1"/>
+                    <Button Content="Export XML" HorizontalAlignment="Left" Height="22" Margin="700,234,0,0" VerticalAlignment="Top" Width="76" Click="EXPORT_LIST" Grid.Column="1"/>
+                    <Button Content="Import XML" HorizontalAlignment="Left" Height="22" Margin="700,256,0,0" VerticalAlignment="Top" Width="76" Click="IMPORT_LIST" Grid.Column="1"/>
+                    <Button Content="-> TapeCat" HorizontalAlignment="Left" Height="22" Margin="700,278,0,0" VerticalAlignment="Top" Width="76" Click="COPY_TO_TAPECATALOG" Grid.Column="1"/>
+                    <ListView x:Name="FilesListView" Margin="10,146,101,10" Grid.ColumnSpan="2">
+                        <ListView.View>
+                            <GridView>
+                                <GridViewColumn Header="Filename" DisplayMemberBinding="{Binding Filename}" Width="300"/>
+                                <GridViewColumn Header="File Dir" DisplayMemberBinding="{Binding FileDir}" Width="300"/>
+                                <GridViewColumn Header="Size SRC (MB)" DisplayMemberBinding="{Binding SizeSrc}" Width="100"/>
+                                <GridViewColumn Header="Size ARC (MB)" DisplayMemberBinding="{Binding SizeArc}" Width="100"/>
+                                <GridViewColumn Header="Status" DisplayMemberBinding="{Binding Status}" Width="60"/>
+                                <GridViewColumn Header="Archive Drive" DisplayMemberBinding="{Binding ArcDrive}" Width="140"/>
+                                <GridViewColumn Header="Mod SRC" DisplayMemberBinding="{Binding ModSrc}" Width="140"/>
+                                <GridViewColumn Header="Mod ARC" DisplayMemberBinding="{Binding ModArc}" Width="140"/>
+                            </GridView>
+                        </ListView.View>
+                    </ListView>
+                    <TextBlock TextWrapping="Wrap" Text="Source Directory:" Margin="0,0,697,387"/>
+                    <TextBlock TextWrapping="Wrap" Text="Archive Directory:" Margin="0,37,697,350"/>
+                </Grid>
+            </TabItem>
+            <TabItem Header="Tapecatalog">
+                <Grid Background="#FFE5E5E5">
+                    <ComboBox x:Name="MediumComboBox" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="200" Grid.ColumnSpan="2"/>
+                    <Button Content="Refresh Mediums" HorizontalAlignment="Left" Height="22" Margin="218,10,0,0" VerticalAlignment="Top" Width="120" Click="REFRESH_MEDIUMS"/>
+                    <Button Content="Copy from SRC-ARC" HorizontalAlignment="Left" Height="22" Margin="343,10,0,0" VerticalAlignment="Top" Width="120" Click="COPY_FROM_SRCARC"/>
+                    <ListView x:Name="TapeCatalogListView" Margin="10,44,10,40" Grid.ColumnSpan="2">
+                        <ListView.View>
+                            <GridView>
+                                <GridViewColumn Header="Medium" DisplayMemberBinding="{Binding Medium}" Width="150"/>
+                                <GridViewColumn Header="Dateiname" DisplayMemberBinding="{Binding Filename}" Width="400"/>
+                                <GridViewColumn Header="Änderungsdatum" DisplayMemberBinding="{Binding Modified}" Width="200"/>
+                            </GridView>
+                        </ListView.View>
+                    </ListView>
+                    <Button Content="Export Medium" HorizontalAlignment="Left" Height="22" Margin="468,0,0,374" VerticalAlignment="Bottom" Width="120" Click="EXPORT_MEDIUM"/>
+                </Grid>
+            </TabItem>
+        </TabControl>
+
+    </Grid>
+</Window>
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
new file mode 100644
index 0000000..7236c7d
--- /dev/null
+++ b/MainWindow.xaml.cs
@@ -0,0 +1,364 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using System.Collections.ObjectModel;
+using System.IO;
+using XML;
+
+
+
+namespace TapeCatalog
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private readonly ObservableCollection<FileEntry> _files = new ObservableCollection<FileEntry>();
+
+        private static string FormatBytesToMb(long bytes)
+        {
+            // convert to MB with two decimal places
+            double mb = bytes / 1024.0 / 1024.0;
+            return mb.ToString("F2");
+        }
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            FilesListView.ItemsSource = _files;
+        }
+        #region (export Medium)
+        private void EXPORT_MEDIUM(object sender, RoutedEventArgs e)
+        {
+            var selected = MediumComboBox.SelectedItem as string;
+            if (string.IsNullOrWhiteSpace(selected))
+            {
+                MessageBox.Show(this, "Bitte ein Medium im Dropdown auswählen.", "Keine Auswahl", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            // collect matching entries from TapeCatalogListView
+            var matches = new List<XML.Methods.TapeEntry>();
+            foreach (var item in TapeCatalogListView.Items)
+            {
+                var te = item as dynamic;
+                if (te == null) continue;
+                string m = te.Medium as string;
+                if (string.Equals(m, selected, StringComparison.OrdinalIgnoreCase))
+                {
+                    matches.Add(new XML.Methods.TapeEntry { Medium = te.Medium, Filename = te.Filename, Modified = te.Modified });
+                }
+            }
+
+            if (matches.Count == 0)
+            {
+                MessageBox.Show(this, "Keine Einträge für das gewählte Medium gefunden.", "Keine Einträge", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+
+            // delegate export to XML helper
+            XML.Methods.ExportTapeEntries(this, selected, matches);
+        }
+        #endregion
+        #region (Import List)
+        private void IMPORT_LIST(object sender, RoutedEventArgs e)
+        {
+            // delegate to XML import helper
+            XML.Methods.ImportList(this, _files, SourceTextBox, ArchiveTextBox);
+        }
+        #endregion (Import List)
+        #region (COPY_TO_TAPECATALOG)
+        private void COPY_TO_TAPECATALOG(object sender, RoutedEventArgs e)
+        {
+            // delegate to XML helper to copy entries to TapeCatalog list view
+            XML.Methods.CopyToTapeCatalog(this, _files, TapeCatalogListView);
+        }
+        #endregion (COPY_TO_TAPECATALOG)
+        #region (COPY_FROM_SRCARC)
+        private void COPY_FROM_SRCARC(object sender, RoutedEventArgs e)
+        {
+            XML.Methods.CopyToTapeCatalog(this, _files, TapeCatalogListView);
+        }
+        #endregion (COPY_FROM_SRCARC)
+        #region (REFRESH_MEDIUMS)
+        private void REFRESH_MEDIUMS(object sender, RoutedEventArgs e)
+        {
+            // collect distinct mediums from TapeCatalogListView items
+            try
+            {
+                var mediums = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+                foreach (var item in TapeCatalogListView.Items)
+                {
+                    var te = item as dynamic;
+                    if (te == null) continue;
+                    string m = te.Medium as string;
+                    if (!string.IsNullOrWhiteSpace(m)) mediums.Add(m);
+                }
+
+                MediumComboBox.ItemsSource = mediums.OrderBy(s => s).ToList();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(this, $"Fehler beim Aktualisieren der Medium-Liste: {ex.Message}", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+        }
+        #endregion (REFRESH_MEDIUMS)
+        #region (EXPORT_LIST)
+        private void EXPORT_LIST(object sender, RoutedEventArgs e)
+        {
+            // Delegate export to XML helper
+            XML.Methods.ExportList(this, SourceTextBox.Text, ArchiveTextBox.Text, _files);
+        }
+
+        private void SET_RES_DIR(object sender, RoutedEventArgs e)
+        {
+            // Use the WinForms FolderBrowserDialog to select a folder
+            using (var dlg = new System.Windows.Forms.FolderBrowserDialog())
+            {
+                dlg.Description = "Select a folder";
+                dlg.ShowNewFolderButton = true;
+                var result = dlg.ShowDialog();
+                if (result == System.Windows.Forms.DialogResult.OK && !string.IsNullOrWhiteSpace(dlg.SelectedPath))
+                {
+                    SourceTextBox.Text = dlg.SelectedPath;
+                }
+            }
+        }
+        #endregion (EXPORT_LIST)
+        #region (SET_ARC_DIR)
+        private void SET_ARC_DIR(object sender, RoutedEventArgs e)
+        {
+            // Use the WinForms FolderBrowserDialog to select a folder
+            using (var dlg = new System.Windows.Forms.FolderBrowserDialog())
+            {
+                dlg.Description = "Select a folder";
+                dlg.ShowNewFolderButton = true;
+                var result = dlg.ShowDialog();
+                if (result == System.Windows.Forms.DialogResult.OK && !string.IsNullOrWhiteSpace(dlg.SelectedPath))
+                {
+                    ArchiveTextBox.Text = dlg.SelectedPath;
+                }
+            }
+        }
+        #endregion (SET_ARC_DIR)
+        #region (SCAN_RES_DIR)
+        private void SCAN_RES_DIR(object sender, RoutedEventArgs e)
+        {
+            var path = SourceTextBox.Text?.Trim();
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                MessageBox.Show("Please select a directory first.", "No directory", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!Directory.Exists(path))
+            {
+                MessageBox.Show("The specified directory does not exist.", "Directory not found", MessageBoxButton.OK, MessageBoxImage.Error);
+                return;
+            }
+
+            try
+            {
+                foreach (var file in Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories))
+                {
+                    try
+                    {
+                        var fi = new FileInfo(file);
+                        // check if an entry with same filename and same source directory already exists
+                        var existing = _files.FirstOrDefault(f => string.Equals(f.Filename, fi.Name, StringComparison.OrdinalIgnoreCase)
+                                                                   && string.Equals(f.FileDir, fi.DirectoryName, StringComparison.OrdinalIgnoreCase));
+                        if (existing != null)
+                        {
+                            var newSizeMb = FormatBytesToMb(fi.Length);
+                            if (existing.SizeSrc != newSizeMb)
+                            { 
+                                // update size and modification date, do not add a new entry
+                                existing.SizeSrc = newSizeMb;
+                                existing.ModSrc = fi.LastWriteTime.ToString();
+                                // reset verification status and archive drive info
+                                existing.Status = string.Empty;
+                                existing.ArcDrive = string.Empty;
+                            }
+                        }
+                        else
+                        {
+                            _files.Add(new FileEntry
+                            {
+                                Filename = fi.Name,
+                                FileDir = fi.DirectoryName,
+                                SizeSrc = FormatBytesToMb(fi.Length),
+                                //SizeArc = string.Empty,
+                                ModSrc = fi.LastWriteTime.ToString(),
+                                //ModArc = string.Empty
+                            });
+                        }
+                    }
+                    catch
+                    {
+                        // ignore files we can't access
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Error scanning directory: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+            // inform user that scan finished
+            MessageBox.Show($"Scan abgeschlossen. Einträge: {_files.Count}", "Scan beendet", MessageBoxButton.OK, MessageBoxImage.Information);
+        }
+        #endregion (SCAN_RES_DIR)
+        #region(SCAN_ARC_DIR)
+        private void SCAN_ARC_DIR(object sender, RoutedEventArgs e)
+        {
+            var path = ArchiveTextBox.Text?.Trim();
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                MessageBox.Show("Please select an archive directory first.", "No directory", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (!Directory.Exists(path))
+            {
+                MessageBox.Show("The specified archive directory does not exist.", "Directory not found", MessageBoxButton.OK, MessageBoxImage.Error);
+                return;
+            }
+
+            try
+            {
+                foreach (var file in Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories))
+                {
+                    try
+                    {
+                        var fi = new FileInfo(file);
+
+                        // look for existing entry by filename (case-insensitive)
+                        var existing = _files.FirstOrDefault(f => string.Equals(f.Filename, fi.Name, StringComparison.Ordinal));
+                        if (existing != null)
+                        {
+                            // update SizeArc
+                            existing.SizeArc = FormatBytesToMb(fi.Length);
+
+                            // update ModArc to the most recent modified date
+                            DateTime prevMod;
+                            if (!DateTime.TryParse(existing.ModArc, out prevMod))
+                                prevMod = DateTime.MinValue;
+
+                            var mod = fi.LastWriteTime > prevMod ? fi.LastWriteTime : prevMod;
+                            existing.ModArc = mod.ToString();
+                        }
+                        else
+                        {
+                            _files.Add(new FileEntry
+                            {
+                                Filename = fi.Name,
+                                FileDir = fi.DirectoryName,
+                                //SizeSrc = string.Empty,
+                                SizeArc = FormatBytesToMb(fi.Length),
+                                //ModSrc = string.Empty,
+                                ModArc = fi.LastWriteTime.ToString()
+                            });
+                        }
+                    }
+                    catch
+                    {
+                        // ignore inaccessible files
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Error scanning archive directory: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+            // inform user that archive scan finished
+            MessageBox.Show($"Scan abgeschlossen. Einträge: {_files.Count}", "Scan beendet", MessageBoxButton.OK, MessageBoxImage.Information);
+        }
+        #endregion(SCAN_ARC_DIR)
+        #region (CLEAR_FILES)
+        private void CLEAR_FILES(object sender, RoutedEventArgs e)
+        {
+            _files.Clear();
+        }
+        #endregion (CLEAR_FILES)
+        #region (VERIFY_SIZES)
+        private void VERIFY_SIZES(object sender, RoutedEventArgs e)
+        {
+            // determine archive drive name (volume label or drive root)
+            string archivePath = ArchiveTextBox.Text?.Trim();
+            string archiveDriveName = string.Empty;
+            if (!string.IsNullOrWhiteSpace(archivePath))
+            {
+                try
+                {
+                    var root = System.IO.Path.GetPathRoot(archivePath);
+                    if (!string.IsNullOrWhiteSpace(root))
+                    {
+                        try
+                        {
+                            var di = new DriveInfo(root);
+                            archiveDriveName = string.IsNullOrWhiteSpace(di.VolumeLabel) ? root.TrimEnd('\\') : di.VolumeLabel;
+                        }
+                        catch
+                        {
+                            archiveDriveName = root.TrimEnd('\\');
+                        }
+                    }
+                }
+                catch
+                {
+                    archiveDriveName = string.Empty;
+                }
+            }
+
+            foreach (var entry in _files)
+            {
+                // Sizes are stored in MB with two decimals; compare as doubles
+                double src = 0;
+                double arc = 0;
+                double.TryParse(entry.SizeSrc, out src);
+                double.TryParse(entry.SizeArc, out arc);
+
+                if (src > 0 && arc > 0 && Math.Abs(src - arc) < 0.01)
+                {
+                    entry.Status = "✔";
+                    entry.ArcDrive = archiveDriveName;
+                }
+                else
+                {
+                    entry.Status = "✖";
+                    entry.ArcDrive = string.Empty;
+                }
+            }
+        }
+    }
+    #endregion (VERIFY_SIZES)
+    public class FileEntry : System.ComponentModel.INotifyPropertyChanged
+    {
+        public string Filename { get; set; }
+        public string FileDir { get; set; }
+        private string _sizeSrc;
+        public string SizeSrc { get => _sizeSrc; set { _sizeSrc = value; OnPropertyChanged(nameof(SizeSrc)); } }
+        private string _sizeArc;
+        public string SizeArc { get => _sizeArc; set { _sizeArc = value; OnPropertyChanged(nameof(SizeArc)); } }
+        public string ModSrc { get; set; }
+        public string ModArc { get; set; }
+        private string _status;
+        public string Status { get => _status; set { _status = value; OnPropertyChanged(nameof(Status)); } }
+        private string _arcDrive;
+        public string ArcDrive { get => _arcDrive; set { _arcDrive = value; OnPropertyChanged(nameof(ArcDrive)); } }
+
+        public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
+        private void OnPropertyChanged(string propName) => PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(propName));
+    }
+}
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..a123489
--- /dev/null
+++ b/Properties/AssemblyInfo.cs
@@ -0,0 +1,52 @@
+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("TapeCatalog")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("TapeCatalog")]
+[assembly: AssemblyCopyright("Copyright ©  2026")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Properties/Resources.Designer.cs b/Properties/Resources.Designer.cs
new file mode 100644
index 0000000..a0f7822
--- /dev/null
+++ b/Properties/Resources.Designer.cs
@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace TapeCatalog.Properties
+{
+
+
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("TapeCatalog.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}
diff --git a/Properties/Resources.resx b/Properties/Resources.resx
new file mode 100644
index 0000000..0883fa1
--- /dev/null
+++ b/Properties/Resources.resx
@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file
diff --git a/Properties/Settings.Designer.cs b/Properties/Settings.Designer.cs
new file mode 100644
index 0000000..3b23d06
--- /dev/null
+++ b/Properties/Settings.Designer.cs
@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace TapeCatalog.Properties
+{
+
+
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+    {
+
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+        public static Settings Default
+        {
+            get
+            {
+                return defaultInstance;
+            }
+        }
+    }
+}
diff --git a/Properties/Settings.settings b/Properties/Settings.settings
new file mode 100644
index 0000000..0a72540
--- /dev/null
+++ b/Properties/Settings.settings
@@ -0,0 +1,7 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>
\ No newline at end of file
diff --git a/Sort.cs b/Sort.cs
new file mode 100644
index 0000000..ddc86ba
--- /dev/null
+++ b/Sort.cs
@@ -0,0 +1,8 @@
+using System;
+
+public class Class1
+{
+	public Class1()
+	{
+	}
+}
diff --git a/TapeCatalog.csproj b/TapeCatalog.csproj
new file mode 100644
index 0000000..bda75f1
--- /dev/null
+++ b/TapeCatalog.csproj
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{2ED075BB-CE1E-4B8C-B81C-E0BEA77D1685}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>TapeCatalog</RootNamespace>
+    <AssemblyName>TapeCatalog</AssemblyName>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Compile Include="XML_Methods.cs" />
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include=".gitignore" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/TapeCatalog.slnx b/TapeCatalog.slnx
new file mode 100644
index 0000000..828460e
--- /dev/null
+++ b/TapeCatalog.slnx
@@ -0,0 +1,3 @@
+<Solution>
+  <Project Path="TapeCatalog.csproj" Id="2ed075bb-ce1e-4b8c-b81c-e0bea77d1685" />
+</Solution>
diff --git a/XML_Methods.cs b/XML_Methods.cs
new file mode 100644
index 0000000..d291b2e
--- /dev/null
+++ b/XML_Methods.cs
@@ -0,0 +1,203 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Xml.Linq;
+using System.Windows.Controls;
+using System.Windows;
+using Microsoft.Win32;
+using System.Collections.ObjectModel;
+using TapeCatalog;
+
+namespace XML
+{
+	public static class Methods
+	{
+        public class TapeEntry
+		{
+			public string Medium { get; set; }
+			public string Filename { get; set; }
+			public string Modified { get; set; }
+		}
+
+		public static void ExportTapeEntries(Window owner, string medium, IEnumerable<TapeEntry> entries)
+		{
+			if (entries == null) return;
+
+			var dlg = new Microsoft.Win32.SaveFileDialog()
+			{
+				Filter = "XML Files (*.xml)|*.xml|All Files (*.*)|*.*",
+				DefaultExt = "xml",
+				AddExtension = true,
+				FileName = $"tape_{medium}.xml"
+			};
+
+			var res = dlg.ShowDialog(owner);
+			if (res != true) return;
+
+			try
+			{
+				var doc = new XDocument(
+					new XElement("TapeEntries",
+						new XElement("Medium", medium ?? string.Empty),
+						entries.Select(e => new XElement("Entry",
+							new XElement("Medium", e.Medium ?? string.Empty),
+							new XElement("Filename", e.Filename ?? string.Empty),
+							new XElement("Modified", e.Modified ?? string.Empty)
+						))
+					)
+				);
+
+				doc.Save(dlg.FileName);
+				MessageBox.Show(owner, $"Export erfolgreich nach {dlg.FileName}", "Export", MessageBoxButton.OK, MessageBoxImage.Information);
+			}
+			catch (Exception ex)
+			{
+				MessageBox.Show(owner, $"Fehler beim Export: {ex.Message}", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+			}
+		}
+     public static void CopyToTapeCatalog(Window owner, IEnumerable<FileEntry> sourceFiles, ListView targetListView)
+		{
+			if (sourceFiles == null || targetListView == null) return;
+
+			// add entries: Medium = ArcDrive, Dateiname = Filename, Änderungsdatum = SizeArc (archive size)
+			foreach (var f in sourceFiles)
+			{
+				try
+				{
+					var te = new TapeEntry
+					{
+						Medium = f.ArcDrive ?? string.Empty,
+						Filename = f.Filename ?? string.Empty,
+						Modified = f.SizeArc ?? string.Empty
+					};
+
+					// add to ListView on UI thread
+					if (!targetListView.Dispatcher.CheckAccess())
+					{
+						targetListView.Dispatcher.Invoke(() => targetListView.Items.Add(te));
+					}
+					else
+					{
+						targetListView.Items.Add(te);
+					}
+				}
+				catch
+				{
+					// ignore malformed entries
+				}
+			}
+		}
+      public static void ImportList(Window owner, ObservableCollection<FileEntry> files, TextBox sourceTextBox, TextBox archiveTextBox)
+		{
+			if (files == null) return;
+
+			if (files.Count > 0)
+			{
+				var ask = MessageBox.Show(owner, "Aktuelle Liste speichern?\nJa = speichern, Nein = löschen, Abbrechen = abbrechen.", "Liste vorhanden", MessageBoxButton.YesNoCancel, MessageBoxImage.Question);
+				if (ask == MessageBoxResult.Cancel) return;
+
+				if (ask == MessageBoxResult.Yes)
+				{
+					// save current list
+					ExportList(owner, sourceTextBox?.Text ?? string.Empty, archiveTextBox?.Text ?? string.Empty, files);
+					files.Clear();
+				}
+				else if (ask == MessageBoxResult.No)
+				{
+					files.Clear();
+				}
+			}
+
+			var dlg = new Microsoft.Win32.OpenFileDialog()
+			{
+				Filter = "XML Files (*.xml)|*.xml|All Files (*.*)|*.*",
+				DefaultExt = "xml",
+				Multiselect = false
+			};
+
+			var res = dlg.ShowDialog(owner);
+			if (res != true) return;
+
+			try
+			{
+				var doc = XDocument.Load(dlg.FileName);
+				var root = doc.Element("Files");
+				if (root == null) return;
+
+				var src = root.Element("SourceDir")?.Value ?? string.Empty;
+				var arc = root.Element("ArchiveDir")?.Value ?? string.Empty;
+				if (sourceTextBox != null) sourceTextBox.Text = src;
+				if (archiveTextBox != null) archiveTextBox.Text = arc;
+
+				foreach (var fe in root.Elements("File"))
+				{
+					try
+					{
+						var entry = new FileEntry
+						{
+							Filename = fe.Element("Filename")?.Value ?? string.Empty,
+							FileDir = fe.Element("FileDir")?.Value ?? string.Empty,
+							SizeSrc = fe.Element("SizeSrc")?.Value ?? string.Empty,
+							SizeArc = fe.Element("SizeArc")?.Value ?? string.Empty,
+							Status = fe.Element("Status")?.Value ?? string.Empty,
+							ArcDrive = fe.Element("ArcDrive")?.Value ?? string.Empty,
+							ModSrc = fe.Element("ModSrc")?.Value ?? string.Empty,
+							ModArc = fe.Element("ModArc")?.Value ?? string.Empty
+						};
+						files.Add(entry);
+					}
+					catch
+					{
+						// ignore malformed entries
+					}
+				}
+				MessageBox.Show(owner, $"Import erfolgreich von {dlg.FileName}", "Import", MessageBoxButton.OK, MessageBoxImage.Information);
+			}
+			catch (Exception ex)
+			{
+				MessageBox.Show(owner, $"Fehler beim Import: {ex.Message}", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+			}
+		}
+		public static void ExportList(Window owner, string sourceDir, string archiveDir, IEnumerable<FileEntry> files)
+		{
+			var dlg = new SaveFileDialog()
+			{
+				Filter = "XML Files (*.xml)|*.xml|All Files (*.*)|*.*",
+				DefaultExt = "xml",
+				AddExtension = true,
+				FileName = "filelist.xml"
+			};
+
+			var res = dlg.ShowDialog(owner);
+			if (res != true)
+				return;
+
+			try
+			{
+				var doc = new XDocument(
+					new XElement("Files",
+						new XElement("SourceDir", sourceDir ?? string.Empty),
+						new XElement("ArchiveDir", archiveDir ?? string.Empty),
+						files.Select(f => new XElement("File",
+							new XElement("Filename", f.Filename ?? string.Empty),
+							new XElement("FileDir", f.FileDir ?? string.Empty),
+							new XElement("SizeSrc", f.SizeSrc ?? string.Empty),
+							new XElement("SizeArc", f.SizeArc ?? string.Empty),
+							new XElement("Status", f.Status ?? string.Empty),
+							new XElement("ArcDrive", f.ArcDrive ?? string.Empty),
+							new XElement("ModSrc", f.ModSrc ?? string.Empty),
+							new XElement("ModArc", f.ModArc ?? string.Empty)
+						))
+					)
+				);
+
+				doc.Save(dlg.FileName);
+				MessageBox.Show(owner, $"Export erfolgreich nach {dlg.FileName}", "Export", MessageBoxButton.OK, MessageBoxImage.Information);
+			}
+			catch (Exception ex)
+			{
+				MessageBox.Show(owner, $"Fehler beim Export: {ex.Message}", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+			}
+		}
+	}
+}