Merge branch 'running-sheets'

# Conflicts:
#	MainWindow.axaml.cs
#	Tasks/AddressCreation.cs
#	Tasks/PdfBuilder.cs

DataStore/DataStructures.cs

@@ -178,6 +178,23 @@ public class KasPerson
     public string abteilung { get; set; }
     public string funktionad { get; set; }
 
+    public string used_plz { get; set; } = "";
+
+    public static void SetUsedPLZ(int id, string plz)
+    {
+        foreach (var set in Settings._instance.addressSets.addresses)
+        {
+            foreach (var add in set.KasPersons)
+            {
+                if (add.id == id)
+                {
+                    add.used_plz = plz;
+                    return;
+                }
+            }
+        }
+    }
+
     public static int GenerateNewID(int base_id)
     {
         //var newid = 100000 + base_id;

DataStore/Settings.cs

@@ -67,6 +67,9 @@ public class PdfExportSettings
 
     public double fontSize { get; set; } = 9;
     public double smallFontSize { get; set; } = 6;
+    public bool exportRunningSheets { get; set; } = true;
+    public int rsNumGrouped { get; set; } = 25;
+    public int rsPlzStartpoint { get; set; } = 2;
 }
 
 public class Global
@@ -169,6 +172,19 @@ public class Customer
     public char separator { get; set; } = ',';
     public int ID { get; }
 
+    public static Customer GetCustomerByID(int id)
+    {
+        foreach (var customer in Settings._instance.customers.customers)
+        {
+            if (id == customer.ID)
+            {
+                return customer;
+            }
+        }
+
+        return null;
+    }
+
 
     // public static int GetIDByCustomerListItem(string item_content)
     // {

MainWindow.axaml

@@ -254,6 +254,7 @@
                                             <Label Grid.Column="0" Content="Zellenrand rechts (mm)"></Label>
                                             <NumericUpDown Grid.Column="1" x:Name="NudExpMargCellPaddingRight" Minimum="0" Maximum="20" Value="5"></NumericUpDown>
                                         </Grid>
+                                        <CheckBox Content="Laufzettel erstellen" x:Name="CbExpRnsEnable"></CheckBox>
                                     </StackPanel>
                                     
                                     <StackPanel Grid.Column="1" Orientation="Vertical" Spacing="10">
@@ -273,6 +274,10 @@
                                             <Label Content="Zellenabstand links"></Label>
                                             <NumericUpDown Grid.Column="1" x:Name="TbExpMargMarginLeft" Minimum="0" Maximum="20" Value="0"></NumericUpDown>
                                         </Grid>
+                                        <Grid ColumnDefinitions="*,*">
+                                            <Label Grid.Column="0" Content="Anzahl gruppierter Sendungen"></Label>
+                                            <NumericUpDown Grid.Column="1" x:Name="NudExpRnsPlzcount" Minimum="1" Maximum="10000" Value="25"></NumericUpDown>
+                                        </Grid>
                                     </StackPanel>
                                     
                                     <StackPanel Grid.Column="2" Orientation="Vertical" Spacing="10">
@@ -292,6 +297,10 @@
                                             <Label Grid.Column="0" Content="Schriftgröße (klein)"></Label>
                                             <NumericUpDown Grid.Column="1" x:Name="NudExpMargSmallFontSize" Minimum="3" Maximum="30" Value="6"></NumericUpDown>
                                         </Grid>
+                                        <Grid ColumnDefinitions="*,*">
+                                            <Label Grid.Column="0" Content="Gruppierpunkt"></Label>
+                                            <NumericUpDown Grid.Column="1" x:Name="NudExpRnsPlzStartpoint" Minimum="1" Maximum="10" Value="2"></NumericUpDown>
+                                        </Grid>
                                     </StackPanel>
                                 </Grid>
                                 <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">

MainWindow.axaml.cs

@@ -772,8 +772,9 @@ public partial class MainWindow : Window
             list.Add((KasAddressList)item);
         try
         {
-            StartCombine(list, Convert.ToInt32(LstCustomers.SelectedItem), "difference", GetCombiningTyp());
+            StartCombine(list, Convert.ToInt32((LstCustomers.SelectedItem as Customer).ID), "difference", GetCombiningTyp());
-        }catch (Exception ex)
+        }
+        catch (Exception ex)
         {
             Logger.Log($"Error while combining (difference): {ex.Message}", Logger.LogType.Error);
         }
@@ -802,7 +803,7 @@ public partial class MainWindow : Window
             list.Add((KasAddressList)item);
         try
         {
-            StartCombine(list, Convert.ToInt32(LstCustomers.SelectedItem.ToString().Split(" - ")[0]), "intersection", GetCombiningTyp());
+            StartCombine(list, Convert.ToInt32((LstCustomers.SelectedItem as Customer).ID), "intersection", GetCombiningTyp());
         }
         catch (Exception ex)
         {
@@ -829,7 +830,7 @@ public partial class MainWindow : Window
         foreach (var item in LstCustomerAdressSets.SelectedItems)
             list.Add((KasAddressList)item);
 
-        StartCombine(list, Convert.ToInt32(LstCustomers.SelectedItem.ToString().Split(" - ")[0]), "symdiff", GetCombiningTyp());
+        StartCombine(list, Convert.ToInt32((LstCustomers.SelectedItem as Customer).ID), "symdiff", GetCombiningTyp());
     }
 
     private async void BtnGenerateLabels_OnClick(object? sender, RoutedEventArgs e)

Tasks/AddressCreation.cs

@@ -43,166 +43,162 @@ public static class AddressCreator
     public static string? CreateFinalMarkdownString(int id)
     {
         // Maximum seven lines of information
-        try
+
+        // find the address
+        KasPerson? address = null;
+        var string_address = "";
+        var address_line_count = 0;
+        foreach (var set in Settings._instance.addressSets.addresses)
         {
-            // find the address
+            var temp = set.KasPersons.FirstOrDefault(obj => obj.id == id);
-                    KasPerson? address = null;
+            if (temp != null)
-                    var string_address = "";
+            {
-                    var address_line_count = 0;
+                address = temp;
-                    foreach (var set in Settings._instance.addressSets.addresses)
+                break;
-                    {
+            }
-                        var temp = set.KasPersons.FirstOrDefault(obj => obj.id == id);
-                        if (temp != null)
-                        {
-                            address = temp;
-                            break;
-                        }
-                    }
-            
-                    // no address found
-                    if (address == null) return null;
-            
-                    // let's get started: we start from the bottom
-                    // if the country is not Germany, set it; try to map via Global countries alternatives -> translation
-                    var trimmedLand = (address.land ?? "").Trim();
-                    var trimmedLowerLand = trimmedLand.ToLower();
-                    var isGermany = trimmedLowerLand == "germany" || trimmedLowerLand == "ger" ||
-                                    trimmedLowerLand == "" || trimmedLowerLand == "de" ||
-                                    trimmedLowerLand == "deutschland";
-            
-                    if (!isGermany)
-                    {
-                        var countryToShow = trimmedLand; // default: use raw land value
-            
-                        if (!string.IsNullOrEmpty(trimmedLand))
-                            // search for matching country via alternatives using for-loops
-                            for (var ci = 0; ci < Global._instance.countries.Count; ci++)
-                            {
-                                var country = Global._instance.countries[ci];
-                                for (var ai = 0; ai < country.alternatives.Count; ai++)
-                                    try
-                                    {
-                                        var alt = (country.alternatives[ai] ?? "").Trim();
-                                        if (string.Equals(alt, trimmedLand, StringComparison.OrdinalIgnoreCase))
-                                        {
-                                            countryToShow = string.IsNullOrWhiteSpace(country.translation)
-                                                ? country.name
-                                                : country.translation;
-                                            goto CountryFound;
-                                        }
-                                    }
-                                    catch
-                                    {
-                                        // ignore malformed alternative
-                                    }
-                            }
-            
-                        CountryFound:
-                        string_address = "**" + countryToShow + "**"; // Needs to be bold
-                        address_line_count++;
-                    }
-            
-                    // Alternative A: pplz valid and city existing
-                    if (!string.IsNullOrEmpty(address.ort) && CheckPLZ(address.pplz, address.land))
-                    {
-                        string_address = address.pplz + " " + address.ort + "\n" + string_address;
-                        address_line_count++;
-                        if (!string.IsNullOrWhiteSpace(address.postfach))
-                        {
-                            string_address = "Postfach " + address.postfach.Trim() + "\n" + string_address;
-                            address_line_count++;
-                        }
-                        else if (!string.IsNullOrWhiteSpace(address.strasse.Trim()))
-                        {
-                            string_address = address.strasse.Trim() + "\n" + string_address;
-                            address_line_count++;
-                        }
-            
-                        var nameline = CreateNameLine(address.anredzus, address.anrede, address.titel, address.vorname,
-                            address.adel, address.name, address.namezus);
-            
-                        if (!string.IsNullOrWhiteSpace(nameline))
-                        {
-                            string_address = nameline + "\n" + string_address;
-                            address_line_count++;
-                        }
-            
-                        // REIHENFOLGE
-                        var nameattribs = new[]
-                            { address.name1, address.name2, address.name3, address.name4, address.name5, address.abteilung };
-            
-                        var names = "";
-                        for (var i = 0; i < nameattribs.Length; i++)
-                            try
-                            {
-                                if (address_line_count >= 7) break;
-                                if (!string.IsNullOrWhiteSpace(nameattribs[i]))
-                                {
-                                    names += "\n" + nameattribs[i];
-                                    address_line_count++;
-                                }
-                            }
-                            catch
-                            {
-                                Console.WriteLine("ERROR 15821");
-                            }
-            
-                        string_address = names + "\n" + string_address;
-                    } // Alternative B: plz valid and city existing 
-                    else if (!string.IsNullOrEmpty(address.ort) && CheckPLZ(address.plz, address.land))
-                    {
-                        string_address = address.plz + " " + address.ort + "\n" + string_address;
-                        address_line_count++;
-                        if (!string.IsNullOrWhiteSpace(address.strasse))
-                        {
-                            string_address = address.strasse.Trim() + "\n" + string_address;
-                            address_line_count++;
-                        }
-                        else if (!string.IsNullOrWhiteSpace(address.postfach.Trim()))
-                        {
-                            string_address = "Postfach " + address.postfach.Trim() + "\n" + string_address;
-                            address_line_count++;
-                        }
-            
-                        var nameline = CreateNameLine(address.anredzus, address.anrede, address.titel, address.vorname,
-                            address.adel, address.name, address.namezus);
-            
-                        if (!string.IsNullOrWhiteSpace(nameline))
-                        {
-                            string_address = nameline + "\n" + string_address;
-                            address_line_count++;
-                        }
-            
-                        var nameattribs = new[]
-                            { address.name1, address.name2, address.name3, address.name4, address.name5, address.abteilung };
-            
-                        var names = "";
-                        for (var i = 0; i < nameattribs.Length; i++)
-                            try
-                            {
-                                if (address_line_count >= 7) break;
-                                if (!string.IsNullOrWhiteSpace(nameattribs[i]))
-                                {
-                                    names += "\n" + nameattribs[i];
-                                    address_line_count++;
-                                }
-                            }
-                            catch
-                            {
-                                Console.WriteLine("ERROR 15821");
-                            }
-            
-                        string_address = names + "\n" + string_address;
-                    } // Error-Handling?
-            
-                    if (address_line_count > 1) return string_address;
-                    return null;
-        }
-        catch (Exception ex)
-        {
-            Logger.Log($"Error while creating markdown string: {ex.Message}", Logger.LogType.Error);
         }
 
+        // no address found
+        if (address == null) return null;
+
+        // let's get started: we start from the bottom
+        // if the country is not Germany, set it; try to map via Global countries alternatives -> translation
+        var trimmedLand = (address.land ?? "").Trim();
+        var trimmedLowerLand = trimmedLand.ToLower();
+        var isGermany = trimmedLowerLand == "germany" || trimmedLowerLand == "ger" ||
+                        trimmedLowerLand == "" || trimmedLowerLand == "de" ||
+                        trimmedLowerLand == "deutschland";
+
+        if (!isGermany)
+        {
+            var countryToShow = trimmedLand; // default: use raw land value
+
+            if (!string.IsNullOrEmpty(trimmedLand))
+                // search for matching country via alternatives using for-loops
+                for (var ci = 0; ci < Global._instance.countries.Count; ci++)
+                {
+                    var country = Global._instance.countries[ci];
+                    for (var ai = 0; ai < country.alternatives.Count; ai++)
+                        try
+                        {
+                            var alt = (country.alternatives[ai] ?? "").Trim();
+                            if (string.Equals(alt, trimmedLand, StringComparison.OrdinalIgnoreCase))
+                            {
+                                countryToShow = string.IsNullOrWhiteSpace(country.translation)
+                                    ? country.name
+                                    : country.translation;
+                                goto CountryFound;
+                            }
+                        }
+                        catch
+                        {
+                            // ignore malformed alternative
+                        }
+                }
+
+            CountryFound:
+            string_address = "**" + countryToShow + "**"; // Needs to be bold
+            address_line_count++;
+        }
+
+        // Alternative A: pplz valid and city existing
+        if (!string.IsNullOrEmpty(address.ort) && CheckPLZ(address.pplz, address.land))
+        {
+            string pplz = NormalizeGermanPLZ(address.pplz);
+            KasPerson.SetUsedPLZ(id, pplz);
+            string_address = pplz + " " + address.ort + "\n" + string_address;
+            address_line_count++;
+            if (!string.IsNullOrWhiteSpace(address.postfach))
+            {
+                string_address = "Postfach " + address.postfach.Trim() + "\n" + string_address;
+                address_line_count++;
+            }
+            else if (!string.IsNullOrWhiteSpace(address.strasse.Trim()))
+            {
+                string_address = address.strasse.Trim() + "\n" + string_address;
+                address_line_count++;
+            }
+
+            var nameline = CreateNameLine(address.anredzus, address.anrede, address.titel, address.vorname,
+                address.adel, address.name, address.namezus);
+
+            if (!string.IsNullOrWhiteSpace(nameline))
+            {
+                string_address = nameline + "\n" + string_address;
+                address_line_count++;
+            }
+
+            // REIHENFOLGE
+            var nameattribs = new[]
+                { address.name1, address.name2, address.name3, address.name4, address.name5, address.abteilung };
+
+            var names = "";
+            for (var i = 0; i < nameattribs.Length; i++)
+                try
+                {
+                    if (address_line_count >= 7) break;
+                    if (!string.IsNullOrWhiteSpace(nameattribs[i]))
+                    {
+                        names += "\n" + nameattribs[i];
+                        address_line_count++;
+                    }
+                }
+                catch
+                {
+                    Console.WriteLine("ERROR 15821");
+                }
+
+            string_address = names + "\n" + string_address;
+        } // Alternative B: plz valid and city existing 
+        else if (!string.IsNullOrEmpty(address.ort) && CheckPLZ(address.plz, address.land))
+        {
+            string plz = NormalizeGermanPLZ(address.plz);
+            KasPerson.SetUsedPLZ(id, plz);
+            string_address = plz + " " + address.ort + "\n" + string_address;
+            address_line_count++;
+            if (!string.IsNullOrWhiteSpace(address.strasse))
+            {
+                string_address = address.strasse.Trim() + "\n" + string_address;
+                address_line_count++;
+            }
+            else if (!string.IsNullOrWhiteSpace(address.postfach.Trim()))
+            {
+                string_address = "Postfach " + address.postfach.Trim() + "\n" + string_address;
+                address_line_count++;
+            }
+
+            var nameline = CreateNameLine(address.anredzus, address.anrede, address.titel, address.vorname,
+                address.adel, address.name, address.namezus);
+
+            if (!string.IsNullOrWhiteSpace(nameline))
+            {
+                string_address = nameline + "\n" + string_address;
+                address_line_count++;
+            }
+
+            var nameattribs = new[]
+                { address.name1, address.name2, address.name3, address.name4, address.name5, address.abteilung };
+
+            var names = "";
+            for (var i = 0; i < nameattribs.Length; i++)
+                try
+                {
+                    if (address_line_count >= 7) break;
+                    if (!string.IsNullOrWhiteSpace(nameattribs[i]))
+                    {
+                        names += "\n" + nameattribs[i];
+                        address_line_count++;
+                    }
+                }
+                catch
+                {
+                    Console.WriteLine("ERROR 15821");
+                }
+
+            string_address = names + "\n" + string_address;
+        } // Error-Handling?
+
+        if (address_line_count > 1) return string_address;
         return null;
     }
 
@@ -212,11 +208,11 @@ public static class AddressCreator
         try
         {
             if (!string.IsNullOrWhiteSpace(anredezus))
-                    return string.Join(" ",
+                return string.Join(" ",
-                               new[] { anredezus, titel, vorname, adel, name }
+                           new[] { anredezus, titel, vorname, adel, name }
-                                   .Where(s => !string.IsNullOrWhiteSpace(s))
+                               .Where(s => !string.IsNullOrWhiteSpace(s))
-                           )
+                       )
-                           + (string.IsNullOrWhiteSpace(namezus) ? "" : $" ({namezus.Trim()})");
+                       + (string.IsNullOrWhiteSpace(namezus) ? "" : $" ({namezus.Trim()})");
 
             // else 
             return string.Join(" ",
@@ -231,7 +227,6 @@ public static class AddressCreator
         }
 
         return null;
-        
     }
 
     /// <summary>
@@ -277,4 +272,23 @@ public static class AddressCreator
         return false;
         
     }
+    
+    public static string NormalizeGermanPLZ(string plz)
+    {
+        if(plz.Length == 5) return plz;
+        if(plz.Length > 5)
+        {
+            return plz.Substring(0, 5);
+        }
+
+        if (plz.Length < 5)
+        {
+            int toadd = 5 - plz.Length;
+            for (int i = 0; i < toadd; i++)
+            {
+                plz = "0" + plz;
+            }
+        }
+        return plz;
+    }
 }

Tasks/PdfBuilder.cs

@@ -134,6 +134,17 @@ public class PdfBuilder
                     addresses.Add(addr);
             }
 
+        if (addresses.Count == 0)
+        {
+            MessageBox.Show(MainWindow._instance, "Keine validen Adressen konnten generiert werden. Abbruch.", "Fehler");
+            return;
+        }
+        CreateAddressLabelPdfWithPlaceholder(addresses, placeholderText, outputPath);
+
+        if (_settings.exportRunningSheets)
+        {
+            ExportRunningSheets(addressSetId, outputPath);
+        }
             CreateAddressLabelPdfWithPlaceholder(addresses, placeholderText, outputPath);
         }
         catch (Exception ex)
@@ -480,4 +491,142 @@ public class PdfBuilder
         if (left < 0 || top < 0 || right < 0 || bottom < 0)
             throw new ArgumentException("Margins cannot be negative");
     }
+
+    public void ExportRunningSheets(int setID, string path)
+    {
+        if (path.EndsWith(".pdf"))
+        {
+            path = path.Substring(0, path.Length - 4);
+            path = path + "-Laufzettel.pdf";
+        }
+        else
+        {
+            path = path + "-Laufzettel.pdf";
+        }
+
+        CreateRunningSheets(setID, path);
+
+    }
+
+    public void CreateRunningSheets(int setID, string path)
+    {
+        KasAddressList list = Settings._instance.addressSets.GetAddressSetByID(setID);
+        var document = new PdfDocument();
+        document.Info.Title = $"Laufzettel für {list.Name}";
+        document.Info.Subject = "powered by logofclient";
+        document.Info.Author = "logofclient";
+
+        int margin = 50;
+
+        var grouped_nums = GroupAddresses(setID);
+
+        foreach (var result in grouped_nums)
+        {
+            var page = document.AddPage();
+            page.Size = PageSize.A4;
+
+            var gfx = XGraphics.FromPdfPage(page);
+
+            var width = page.Width.Point-margin;
+            var height = page.Height.Point-margin;
+            gfx.DrawLine(XPens.Black, margin, margin, margin, height);
+            gfx.DrawLine(XPens.Black, margin, margin, width, margin);
+            gfx.DrawLine(XPens.Black, width, margin, width, height);
+            gfx.DrawLine(XPens.Black, margin, height, width, height);
+
+            var boldfont = new XFont("Cantarell", 11, XFontStyleEx.Bold);
+            var font = new XFont("Cantarell", 11, XFontStyleEx.Regular);
+            var bigboldfont = new XFont("Cantarell", 35, XFontStyleEx.Bold);
+            
+            // Versandinfo
+            gfx.DrawString($"Versand {list.Name}", boldfont, XBrushes.Black,
+                new XRect(margin+5, margin, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"Start: ", font, XBrushes.Black,
+                new XRect(margin+5, margin+25, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"{result.Item3}", font, XBrushes.Black,
+                new XRect(margin+75, margin+25, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"Ende: ", font, XBrushes.Black,
+                new XRect(margin+5, margin+40, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"{result.Item4}", font, XBrushes.Black,
+                new XRect(margin+75, margin+40, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"Kunde: ", font, XBrushes.Black,
+                new XRect(margin+5, margin+55, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"{Customer.GetCustomerByID(list.owner_id).name}", font, XBrushes.Black,
+                new XRect(margin+75, margin+55, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"Absender: ", font, XBrushes.Black,
+                new XRect(margin+5, margin+70, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"{Customer.GetCustomerByID(list.owner_id).sender_address}", font, XBrushes.Black,
+                new XRect(margin+75, margin+70, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"Anzahl: ", font, XBrushes.Black,
+                new XRect(margin+5, margin+85, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"{result.Item5}", font, XBrushes.Black,
+                new XRect(margin+75, margin+85, width-margin, 25), XStringFormats.CenterLeft);
+            
+            // logofclient ad
+            gfx.DrawString($"powered by logofclient", font, XBrushes.Black,
+                new XRect(margin+5, height-55, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"(c) 2026 MyPapertown", font, XBrushes.Black,
+                new XRect(margin+5, height-40, width-margin, 25), XStringFormats.CenterLeft);
+            gfx.DrawString($"mypapercloud.de/logof", font, XBrushes.Black,
+                new XRect(margin+5, height-25, width-margin, 25), XStringFormats.CenterLeft);
+
+            
+            int total_frac = 0;
+            foreach (var item in grouped_nums)
+            {
+                if (item.Item2 == result.Item2) total_frac++;
+            }
+            
+            // group number
+            gfx.DrawString($"{result.Item2}", bigboldfont, XBrushes.Black,
+                new XRect(margin, margin, width-margin, (height-margin)/2), XStringFormats.Center);
+            gfx.DrawString($"Fraktion {result.Item1}/{total_frac}", font, XBrushes.Black,
+                new XRect(margin, margin, width-margin, (height-margin)/2 + 50), XStringFormats.Center);
+        }
+        
+        document.Save(path);
+    }
+
+    /// <summary>
+    /// Calculates address groups to summarize for the single pages of the running sheets.
+    /// </summary>
+    /// <param name="setID"></param>
+    /// <returns>List of quadruples consisting of a number and the starting of the plz, as well as first, last plz and total amount of addresses</returns>
+    public List<(int, string, string, string, int)> GroupAddresses(int setID)
+    {
+        int grpcount = Settings._instance.pdfExport.rsNumGrouped; // Amount of addresses per group
+        int stpoint = Settings._instance.pdfExport.rsPlzStartpoint; // group starting point (first n characters of the plz)
+        KasAddressList list = Settings._instance.addressSets.GetAddressSetByID(setID);
+        if (list == null)
+            throw new Exception("AddressSet nicht gefunden");
+        
+        List<(int, string, string, string, int)> output = new();
+
+        List<IGrouping<string, KasPerson>> sorted_list = list.KasPersons
+            .Where(x => !string.IsNullOrEmpty(x?.used_plz) &&
+                        x.used_plz.Length >= stpoint)
+            .OrderBy(x => x.used_plz)
+            .GroupBy(x => x.used_plz.Substring(0, stpoint))
+            .ToList();
+        
+        foreach (var group in sorted_list)
+        {
+            string start = group.Key;
+            int fraktion = 0;
+
+            for (int count = 0; count < group.Count(); count += grpcount)
+            {
+                fraktion++;
+
+                int currentGroupSize = Math.Min(grpcount, group.Count() - count);
+
+                string first = group.ElementAt(count).used_plz;
+                string last = group.ElementAt(count + currentGroupSize - 1).used_plz;
+
+                output.Add((fraktion, start, first, last, currentGroupSize));
+            }
+        }
+
+        return output;
+    }
 }