Update Workflow-Integration description in Index.cshtml

Revised the description for the "Workflow-Integration" feature
in the `Index.cshtml` file. The previous text, "Durchlauf
definierter Verarbeitungsschritte mit Status-Tracking"
(Execution of defined processing steps with status tracking),
was replaced with "Hier werden Workflow-Schritte durchlaufen
und der Ergebnisbericht erstellt." (Here, workflow steps are
executed, and the result report is generated).

DXApp.TemplateKitProject/Controllers/SampleDataController.cs

@@ -1,24 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Net;
-using System.Net.Http;
-using DevExtreme.AspNet.Data;
-using DevExtreme.AspNet.Mvc;
-using DXApp.TemplateKitProject.Models;
-using Microsoft.AspNetCore.Mvc;
-
-namespace DXApp.TemplateKitProject.Controllers
-{
-    [Route("api/[controller]")]
-    public class SampleDataController : Controller
-    {
-
-        [HttpGet]
-        public object Get(DataSourceLoadOptions loadOptions)
-        {
-            return DataSourceLoader.Load(SampleData.Orders, loadOptions);
-        }
-
-    }
-}

DXApp.TemplateKitProject/DXApp.TemplateKitProject.csproj

@@ -27,4 +27,8 @@
     <PackageReference Include="Microsoft.Web.LibraryManager.Build" Version="3.0.71" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Controllers\" />
+  </ItemGroup>
+
 </Project>

DXApp.TemplateKitProject/Models/SampleData.cs

@@ -1,364 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DXApp.TemplateKitProject.Models
-{
-    internal static class SampleData
-    {
-        public static List<SampleOrder> Orders = new List<SampleOrder>() {
-            new SampleOrder {
-                OrderID = 10248,
-                OrderDate = new DateTime(1996, 7, 4),
-                ShipCountry = "France",
-                ShipCity = "Reims",
-                CustomerName = "Paul Henriot"
-            },
-            new SampleOrder {
-                OrderID = 10249,
-                OrderDate = new DateTime(1996, 7, 5),
-                ShipCountry = "Germany",
-                ShipCity = "Münster",
-                CustomerName = "Karin Josephs"
-            },
-            new SampleOrder {
-                OrderID = 10250,
-                OrderDate = new DateTime(1996, 7, 8),
-                ShipCountry = "Brazil",
-                ShipCity = "Rio de Janeiro",
-                CustomerName = "Mario Pontes"
-            },
-            new SampleOrder {
-                OrderID = 10251,
-                OrderDate = new DateTime(1996, 7, 8),
-                ShipCountry = "France",
-                ShipCity = "Lyon",
-                CustomerName = "Mary Saveley"
-            },
-            new SampleOrder {
-                OrderID = 10252,
-                OrderDate = new DateTime(1996, 7, 9),
-                ShipCountry = "Belgium",
-                ShipCity = "Charleroi",
-                CustomerName = "Pascale Cartrain"
-            },
-            new SampleOrder {
-                OrderID = 10253,
-                OrderDate = new DateTime(1996, 7, 10),
-                ShipCountry = "Brazil",
-                ShipCity = "Rio de Janeiro",
-                CustomerName = "Mario Pontes"
-            },
-            new SampleOrder {
-                OrderID = 10254,
-                OrderDate = new DateTime(1996, 7, 11),
-                ShipCountry = "Switzerland",
-                ShipCity = "Bern",
-                CustomerName = "Yang Wang"
-            },
-            new SampleOrder {
-                OrderID = 10255,
-                OrderDate = new DateTime(1996, 7, 12),
-                ShipCountry = "Switzerland",
-                ShipCity = "Genève",
-                CustomerName = "Michael Holz"
-            },
-            new SampleOrder {
-                OrderID = 10256,
-                OrderDate = new DateTime(1996, 7, 15),
-                ShipCountry = "Brazil",
-                ShipCity = "Resende",
-                CustomerName = "Paula Parente"
-            },
-            new SampleOrder {
-                OrderID = 10257,
-                OrderDate = new DateTime(1996, 7, 16),
-                ShipCountry = "Venezuela",
-                ShipCity = "San Cristóbal",
-                CustomerName = "Carlos Hernández"
-            },
-            new SampleOrder {
-                OrderID = 10258,
-                OrderDate = new DateTime(1996, 7, 17),
-                ShipCountry = "Austria",
-                ShipCity = "Graz",
-                CustomerName = "Roland Mendel"
-            },
-            new SampleOrder {
-                OrderID = 10259,
-                OrderDate = new DateTime(1996, 7, 18),
-                ShipCountry = "Mexico",
-                ShipCity = "México D.F.",
-                CustomerName = "Francisco Chang"
-            },
-            new SampleOrder {
-                OrderID = 10260,
-                OrderDate = new DateTime(1996, 7, 19),
-                ShipCountry = "Germany",
-                ShipCity = "Köln",
-                CustomerName = "Henriette Pfalzheim"
-            },
-            new SampleOrder {
-                OrderID = 10261,
-                OrderDate = new DateTime(1996, 7, 19),
-                ShipCountry = "Brazil",
-                ShipCity = "Rio de Janeiro",
-                CustomerName = "Bernardo Batista"
-            },
-            new SampleOrder {
-                OrderID = 10262,
-                OrderDate = new DateTime(1996, 7, 22),
-                ShipCountry = "USA",
-                ShipCity = "Albuquerque",
-                CustomerName = "Paula Wilson"
-            },
-            new SampleOrder {
-                OrderID = 10263,
-                OrderDate = new DateTime(1996, 7, 23),
-                ShipCountry = "Austria",
-                ShipCity = "Graz",
-                CustomerName = "Roland Mendel"
-            },
-            new SampleOrder {
-                OrderID = 10264,
-                OrderDate = new DateTime(1996, 7, 24),
-                ShipCountry = "Sweden",
-                ShipCity = "Bräcke",
-                CustomerName = "Maria Larsson"
-            },
-            new SampleOrder {
-                OrderID = 10265,
-                OrderDate = new DateTime(1996, 7, 25),
-                ShipCountry = "France",
-                ShipCity = "Strasbourg",
-                CustomerName = "Frédérique Citeaux"
-            },
-            new SampleOrder {
-                OrderID = 10266,
-                OrderDate = new DateTime(1996, 7, 26),
-                ShipCountry = "Finland",
-                ShipCity = "Oulu",
-                CustomerName = "Pirkko Koskitalo"
-            },
-            new SampleOrder {
-                OrderID = 10267,
-                OrderDate = new DateTime(1996, 7, 29),
-                ShipCountry = "Germany",
-                ShipCity = "München",
-                CustomerName = "Peter Franken"
-            },
-            new SampleOrder {
-                OrderID = 10268,
-                OrderDate = new DateTime(1996, 7, 30),
-                ShipCountry = "Venezuela",
-                ShipCity = "Caracas",
-                CustomerName = "Manuel Pereira"
-            },
-            new SampleOrder {
-                OrderID = 10269,
-                OrderDate = new DateTime(1996, 7, 31),
-                ShipCountry = "USA",
-                ShipCity = "Seattle",
-                CustomerName = "Karl Jablonski"
-            },
-            new SampleOrder {
-                OrderID = 10270,
-                OrderDate = new DateTime(1996, 8, 1),
-                ShipCountry = "Finland",
-                ShipCity = "Oulu",
-                CustomerName = "Pirkko Koskitalo"
-            },
-            new SampleOrder {
-                OrderID = 10271,
-                OrderDate = new DateTime(1996, 8, 1),
-                ShipCountry = "USA",
-                ShipCity = "Lander",
-                CustomerName = "Art Braunschweiger"
-            },
-            new SampleOrder {
-                OrderID = 10272,
-                OrderDate = new DateTime(1996, 8, 2),
-                ShipCountry = "USA",
-                ShipCity = "Albuquerque",
-                CustomerName = "Paula Wilson"
-            },
-            new SampleOrder {
-                OrderID = 10273,
-                OrderDate = new DateTime(1996, 8, 5),
-                ShipCountry = "Germany",
-                ShipCity = "Cunewalde",
-                CustomerName = "Horst Kloss"
-            },
-            new SampleOrder {
-                OrderID = 10274,
-                OrderDate = new DateTime(1996, 8, 6),
-                ShipCountry = "France",
-                ShipCity = "Reims",
-                CustomerName = "Paul Henriot"
-            },
-            new SampleOrder {
-                OrderID = 10275,
-                OrderDate = new DateTime(1996, 8, 7),
-                ShipCountry = "Italy",
-                ShipCity = "Bergamo",
-                CustomerName = "Giovanni Rovelli"
-            },
-            new SampleOrder {
-                OrderID = 10276,
-                OrderDate = new DateTime(1996, 8, 8),
-                ShipCountry = "Mexico",
-                ShipCity = "México D.F.",
-                CustomerName = "Miguel Angel Paolino"
-            },
-            new SampleOrder {
-                OrderID = 10277,
-                OrderDate = new DateTime(1996, 8, 9),
-                ShipCountry = "Germany",
-                ShipCity = "Leipzig",
-                CustomerName = "Alexander Feuer"
-            },
-            new SampleOrder {
-                OrderID = 10278,
-                OrderDate = new DateTime(1996, 8, 12),
-                ShipCountry = "Sweden",
-                ShipCity = "Luleå",
-                CustomerName = "Christina Berglund"
-            },
-            new SampleOrder {
-                OrderID = 10279,
-                OrderDate = new DateTime(1996, 8, 13),
-                ShipCountry = "Germany",
-                ShipCity = "Frankfurt a.M.",
-                CustomerName = "Renate Messner"
-            },
-            new SampleOrder {
-                OrderID = 10280,
-                OrderDate = new DateTime(1996, 8, 14),
-                ShipCountry = "Sweden",
-                ShipCity = "Luleå",
-                CustomerName = "Christina Berglund"
-            },
-            new SampleOrder {
-                OrderID = 10281,
-                OrderDate = new DateTime(1996, 8, 14),
-                ShipCountry = "Spain",
-                ShipCity = "Madrid",
-                CustomerName = "Alejandra Camino"
-            },
-            new SampleOrder {
-                OrderID = 10282,
-                OrderDate = new DateTime(1996, 8, 15),
-                ShipCountry = "Spain",
-                ShipCity = "Madrid",
-                CustomerName = "Alejandra Camino"
-            },
-            new SampleOrder {
-                OrderID = 10283,
-                OrderDate = new DateTime(1996, 8, 16),
-                ShipCountry = "Venezuela",
-                ShipCity = "Barquisimeto",
-                CustomerName = "Carlos González"
-            },
-            new SampleOrder {
-                OrderID = 10284,
-                OrderDate = new DateTime(1996, 8, 19),
-                ShipCountry = "Germany",
-                ShipCity = "Frankfurt a.M.",
-                CustomerName = "Renate Messner"
-            },
-            new SampleOrder {
-                OrderID = 10285,
-                OrderDate = new DateTime(1996, 8, 20),
-                ShipCountry = "Germany",
-                ShipCity = "Cunewalde",
-                CustomerName = "Horst Kloss"
-            },
-            new SampleOrder {
-                OrderID = 10286,
-                OrderDate = new DateTime(1996, 8, 21),
-                ShipCountry = "Germany",
-                ShipCity = "Cunewalde",
-                CustomerName = "Horst Kloss"
-            },
-            new SampleOrder {
-                OrderID = 10287,
-                OrderDate = new DateTime(1996, 8, 22),
-                ShipCountry = "Brazil",
-                ShipCity = "Rio de Janeiro",
-                CustomerName = "Janete Limeira"
-            },
-            new SampleOrder {
-                OrderID = 10288,
-                OrderDate = new DateTime(1996, 8, 23),
-                ShipCountry = "Italy",
-                ShipCity = "Reggio Emilia",
-                CustomerName = "Maurizio Moroni"
-            },
-            new SampleOrder {
-                OrderID = 10289,
-                OrderDate = new DateTime(1996, 8, 26),
-                ShipCountry = "UK",
-                ShipCity = "London",
-                CustomerName = "Victoria Ashworth"
-            },
-            new SampleOrder {
-                OrderID = 10290,
-                OrderDate = new DateTime(1996, 8, 27),
-                ShipCountry = "Brazil",
-                ShipCity = "Sao Paulo",
-                CustomerName = "Pedro Afonso"
-            },
-            new SampleOrder {
-                OrderID = 10291,
-                OrderDate = new DateTime(1996, 8, 27),
-                ShipCountry = "Brazil",
-                ShipCity = "Rio de Janeiro",
-                CustomerName = "Bernardo Batista"
-            },
-            new SampleOrder {
-                OrderID = 10292,
-                OrderDate = new DateTime(1996, 8, 28),
-                ShipCountry = "Brazil",
-                ShipCity = "Sao Paulo",
-                CustomerName = "Anabela Domingues"
-            },
-            new SampleOrder {
-                OrderID = 10293,
-                OrderDate = new DateTime(1996, 8, 29),
-                ShipCountry = "Mexico",
-                ShipCity = "México D.F.",
-                CustomerName = "Miguel Angel Paolino"
-            },
-            new SampleOrder {
-                OrderID = 10294,
-                OrderDate = new DateTime(1996, 8, 30),
-                ShipCountry = "USA",
-                ShipCity = "Albuquerque",
-                CustomerName = "Paula Wilson"
-            },
-            new SampleOrder {
-                OrderID = 10295,
-                OrderDate = new DateTime(1996, 9, 2),
-                ShipCountry = "France",
-                ShipCity = "Reims",
-                CustomerName = "Paul Henriot"
-            },
-            new SampleOrder {
-                OrderID = 10296,
-                OrderDate = new DateTime(1996, 9, 3),
-                ShipCountry = "Venezuela",
-                ShipCity = "Barquisimeto",
-                CustomerName = "Carlos González"
-            },
-            new SampleOrder {
-                OrderID = 10297,
-                OrderDate = new DateTime(1996, 9, 4),
-                ShipCountry = "France",
-                ShipCity = "Strasbourg",
-                CustomerName = "Frédérique Citeaux"
-            }
-        };
-    }
-}

DXApp.TemplateKitProject/Models/SampleOrder.cs

@@ -1,18 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DXApp.TemplateKitProject.Models
-{
-    public class SampleOrder
-    {
-        public int OrderID { get; set; }
-        public DateTime OrderDate { get; set; }
-        public string CustomerID { get; set; }
-        public string CustomerName { get; set; }
-        public string ShipCountry { get; set; }
-        public string ShipCity { get; set; }
-    }
-}

DXApp.TemplateKitProject/Pages/Index.cshtml

@@ -1,28 +1,85 @@
 @page
-@using DXApp.TemplateKitProject.Models
+@model DXApp.TemplateKitProject.Pages.IndexModel
+@{
+    ViewData["Title"] = "Home";
+}
 
-<h2 class="content-block">Home</h2>
+<div class="content-block">
+    <h2><i class="dx-icon-product"></i> DevExpress TemplateKit – Evaluierungsprojekt</h2>
+    <p class="lead text-muted">Validierung von DevExpress als Ablösung für GdPicture im Rahmen der E-Rechnungsverarbeitung</p>
     
-@(Html.DevExtreme().DataGrid<SampleOrder>()
-    .ElementAttr(new { @class = "dx-card wide-card" })
-    .DataSource(d => d.Mvc().Controller("SampleData").LoadAction("Get").Key("OrderID"))
-    .ShowBorders(false)
-    .FilterRow(f => f.Visible(true))
-    .FocusedRowEnabled(true)
-    .FocusedRowIndex(0)
-    .ColumnAutoWidth(true)
-    .ColumnHidingEnabled(true)
-    .Columns(columns => {
-        columns.AddFor(m => m.OrderID);
-        columns.AddFor(m => m.OrderDate);
-        columns.AddFor(m => m.CustomerName);
-        columns.AddFor(m => m.ShipCountry);
-        columns.AddFor(m => m.ShipCity);
-    })
-    .Paging(p => p.PageSize(10))
-    .Pager(p => p
-        .ShowPageSizeSelector(true)
-        .AllowedPageSizes(new[] { 5, 10, 20 })
-        .ShowInfo(true)
-    )
-)
+    <div class="alert alert-primary mt-4">
+        <h4><i class="dx-icon-todo"></i> Projektziel: ZUGFeRD/Factur-X Rechnungsverarbeitung</h4>
+        <p>Diese Anwendung demonstriert die vollständige Verarbeitungskette für elektronische Rechnungen:</p>
+        
+        <ol class="mt-3">
+            <li class="mb-2">
+                <strong>Upload & Validierung</strong>
+                <br/>
+                <small class="text-muted">E-Rechnungen im PDF/A-Format hochladen und auf Konformität prüfen</small>
+            </li>
+            <li class="mb-2">
+                <strong>Extraktion</strong>
+                <br/>
+                <small class="text-muted">Automatische Erkennung und Extraktion eingebetteter Anhänge (ZUGFeRD-XML, Bilder, Dokumente)</small>
+            </li>
+            <li class="mb-2">
+                <strong>Datenverarbeitung</strong>
+                <br/>
+                <small class="text-muted">Parsing der Rechnungsdaten aus dem ZUGFeRD-XML und persistente Speicherung in der Datenbank</small>
+            </li>
+            <li class="mb-2">
+                <strong>Workflow-Integration</strong>
+                <br/>
+                <small class="text-muted">Hier werden Workflow-Schritte durchlaufen und der Ergebnisbericht erstellt.</small>
+            </li>
+            <li class="mb-2">
+                <strong>Ausgabe-Generierung</strong>
+                <br/>
+                <small class="text-muted">Erstellung einer Result-PDF mit Verarbeitungsstempel und angehängtem Ergebnisbericht</small>
+            </li>
+            <li class="mb-2">
+                <strong>Visualisierung</strong>
+                <br/>
+                <small class="text-muted">Interaktive Anzeige aller Anhänge (XML mit Syntax-Highlighting, PDF-Viewer, Bilder)</small>
+            </li>
+        </ol>
+    </div>
+
+    <div class="row mt-4">
+        <div class="col-md-6">
+            <div class="card">
+                <div class="card-body">
+                    <h5 class="card-title"><i class="dx-icon-upload"></i> Rechnungen hochladen</h5>
+                    <p class="card-text">Laden Sie ZUGFeRD-konforme E-Rechnungen hoch und starten Sie die automatische Verarbeitung.</p>
+                    <a href="/Invoices/Upload" class="btn btn-primary">
+                        <i class="dx-icon-upload"></i> Zum Upload
+                    </a>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-6">
+            <div class="card">
+                <div class="card-body">
+                    <h5 class="card-title"><i class="dx-icon-chart"></i> Rechnungsübersicht</h5>
+                    <p class="card-text">Zeigen Sie alle importierten Rechnungen an und greifen Sie auf Details und Anhänge zu.</p>
+                    <a href="/Invoices" class="btn btn-secondary">
+                        <i class="dx-icon-doc"></i> Zur Übersicht
+                    </a>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <div class="alert alert-light mt-4">
+        <h6 class="mb-2"><i class="dx-icon-preferences"></i> Technologie-Stack</h6>
+        <div class="d-flex flex-wrap gap-2">
+            <span class="badge bg-secondary">ASP.NET Core 8.0</span>
+            <span class="badge bg-secondary">DevExpress v25.2</span>
+            <span class="badge bg-secondary">Entity Framework Core</span>
+            <span class="badge bg-secondary">PDF.js</span>
+            <span class="badge bg-secondary">CodeMirror</span>
+            <span class="badge bg-secondary">SQL Server</span>
+        </div>
+    </div>
+</div>

DXApp.TemplateKitProject/Pages/Invoices/Details.cshtml

@@ -11,14 +11,14 @@
     }
 }
 
-<h2>📄 Rechnungsdetails</h2>
-<a href="/Invoices" class="btn btn-secondary mb-3">← Zurück zur Liste</a>
+<h2><i class="dx-icon-doc"></i> Rechnungsdetails</h2>
+<a href="/Invoices" class="btn btn-secondary mb-3"><i class="dx-icon-back"></i> Zurück zur Liste</a>
 
 @if (!string.IsNullOrEmpty(Model.Invoice?.ResultFilePath))
 {
     <button class="btn btn-primary mb-3 ms-2"
             onclick="openPdfViewer(@Model.Invoice.Id)">
-        📄 Ergebnis anzeigen
+        <i class="dx-icon-pdffile"></i> Ergebnis anzeigen
     </button>
 }
 
@@ -60,26 +60,26 @@ else
     @* Anhänge-Sektion *@
     @if (Model.Invoice.Attachments.Any())
     {
-        <h4 class="mt-4">📎 Anhänge (@Model.Invoice.Attachments.Count)</h4>
+        <h4 class="mt-4"><i class="dx-icon-attach"></i> Anhänge (@Model.Invoice.Attachments.Count)</h4>
         <div class="list-group">
             @foreach (var attachment in Model.Invoice.Attachments)
             {
-                var icon = attachment.IsZugferdXml ? "📋" : "📄";
+                var icon = "dx-icon-file";
                 var extension = System.IO.Path.GetExtension(attachment.OriginalFileName).ToLowerInvariant();
                 icon = extension switch
                 {
-                    ".xml" => "📋",
-                    ".pdf" => "📄",
-                    ".jpg" or ".jpeg" or ".png" or ".gif" => "🖼️",
-                    ".txt" => "📝",
-                    _ => "📎"
+                    ".xml" => "dx-icon-exportxlsx",
+                    ".pdf" => "dx-icon-pdffile",
+                    ".jpg" or ".jpeg" or ".png" or ".gif" => "dx-icon-image",
+                    ".txt" => "dx-icon-txtfile",
+                    _ => "dx-icon-file"
                 };
 
                 <a href="javascript:void(0);" 
                    class="list-group-item list-group-item-action d-flex justify-content-between align-items-center"
                    onclick="openAttachmentViewer('@attachment.OriginalFileName', '@Uri.EscapeDataString(attachment.SavedFilePath)', '@extension')">
                     <div>
-                        <span class="me-2">@icon</span>
+                        <i class="@icon me-2"></i>
                         <strong>@attachment.OriginalFileName</strong>
                         @if (attachment.IsZugferdXml)
                         {
@@ -98,7 +98,7 @@ else
     }
     else
     {
-        <h4 class="mt-4">📎 Anhänge</h4>
+        <h4 class="mt-4"><i class="dx-icon-attach"></i> Anhänge</h4>
         <div class="alert alert-info">Keine Anhänge extrahiert.</div>
     }