Refactor DTOs, add Blazor WASM frontend, enable CORS

- Split `CatalogDto` into `CatalogReadDto` and `CatalogWriteDto` for clear separation of read/write operations in both backend and frontend. - Updated API controllers, services, and AutoMapper profiles to use new DTOs; ensured audit fields are set in service layer. - Enabled CORS in the API project to support Blazor WASM frontend. - Added new Blazor WebAssembly project (`DbFirst.BlazorWasm`) with catalog management UI, API client, Bootstrap v5.1.0 styling, and configuration-driven API base URL. - Included `bootstrap.min.css` and its source map for frontend styling and easier debugging. - Updated solution file to include new project and support multiple build configurations. - Result: improved API design, clean DTO separation, and a modern interactive frontend for catalog management.
2026-01-13 10:15:01 +01:00
parent ce40abe20f
commit 14e1cbc3b6
29 changed files with 860 additions and 25 deletions
--- a/DbFirst.BlazorWasm/App.razor
+++ b/DbFirst.BlazorWasm/App.razor
@@ -0,0 +1,12 @@
+<Router AppAssembly="@typeof(App).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
+        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
+    </Found>
+    <NotFound>
+        <PageTitle>Not found</PageTitle>
+        <LayoutView Layout="@typeof(MainLayout)">
+            <p role="alert">Sorry, there's nothing at this address.</p>
+        </LayoutView>
+    </NotFound>
+</Router>
--- a/DbFirst.BlazorWasm/DbFirst.BlazorWasm.csproj
+++ b/DbFirst.BlazorWasm/DbFirst.BlazorWasm.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.22" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.22" PrivateAssets="all" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="wwwroot\sample-data\" />
+  </ItemGroup>
+
+</Project>
--- a/DbFirst.BlazorWasm/Layout/MainLayout.razor
+++ b/DbFirst.BlazorWasm/Layout/MainLayout.razor
@@ -0,0 +1,16 @@
+@inherits LayoutComponentBase
+<div class="page">
+    <div class="sidebar">
+        <NavMenu />
+    </div>
+
+    <main>
+        <div class="top-row px-4">
+            <a href="https://learn.microsoft.com/aspnet/core/" target="_blank">About</a>
+        </div>
+
+        <article class="content px-4">
+            @Body
+        </article>
+    </main>
+</div>
--- a/DbFirst.BlazorWasm/Layout/MainLayout.razor.css
+++ b/DbFirst.BlazorWasm/Layout/MainLayout.razor.css
@@ -0,0 +1,77 @@
+.page {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+}
+
+main {
+    flex: 1;
+}
+
+.sidebar {
+    background-image: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%);
+}
+
+.top-row {
+    background-color: #f7f7f7;
+    border-bottom: 1px solid #d6d5d5;
+    justify-content: flex-end;
+    height: 3.5rem;
+    display: flex;
+    align-items: center;
+}
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        white-space: nowrap;
+        margin-left: 1.5rem;
+        text-decoration: none;
+    }
+
+    .top-row ::deep a:hover, .top-row ::deep .btn-link:hover {
+        text-decoration: underline;
+    }
+
+    .top-row ::deep a:first-child {
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+
+@media (max-width: 640.98px) {
+    .top-row {
+        justify-content: space-between;
+    }
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        margin-left: 0;
+    }
+}
+
+@media (min-width: 641px) {
+    .page {
+        flex-direction: row;
+    }
+
+    .sidebar {
+        width: 250px;
+        height: 100vh;
+        position: sticky;
+        top: 0;
+    }
+
+    .top-row {
+        position: sticky;
+        top: 0;
+        z-index: 1;
+    }
+
+    .top-row.auth ::deep a:first-child {
+        flex: 1;
+        text-align: right;
+        width: 0;
+    }
+
+    .top-row, article {
+        padding-left: 2rem !important;
+        padding-right: 1.5rem !important;
+    }
+}
--- a/DbFirst.BlazorWasm/Layout/NavMenu.razor
+++ b/DbFirst.BlazorWasm/Layout/NavMenu.razor
@@ -0,0 +1,34 @@
+<div class="top-row ps-3 navbar navbar-dark">
+    <div class="container-fluid">
+        <a class="navbar-brand" href="">DbFirst.BlazorWasm</a>
+        <button title="Navigation menu" class="navbar-toggler" @onclick="ToggleNavMenu">
+            <span class="navbar-toggler-icon"></span>
+        </button>
+    </div>
+</div>
+
+<div class="@NavMenuCssClass nav-scrollable" @onclick="ToggleNavMenu">
+    <nav class="flex-column">
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="bi bi-house-door-fill-nav-menu" aria-hidden="true"></span> Home
+            </NavLink>
+        </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="catalogs">
+                <span class="bi bi-collection-nav-menu" aria-hidden="true"></span> Catalogs
+            </NavLink>
+        </div>
+    </nav>
+</div>
+
+@code {
+    private bool collapseNavMenu = true;
+
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+
+    private void ToggleNavMenu()
+    {
+        collapseNavMenu = !collapseNavMenu;
+    }
+}
--- a/DbFirst.BlazorWasm/Layout/NavMenu.razor.css
+++ b/DbFirst.BlazorWasm/Layout/NavMenu.razor.css
@@ -0,0 +1,83 @@
+.navbar-toggler {
+    background-color: rgba(255, 255, 255, 0.1);
+}
+
+.top-row {
+    height: 3.5rem;
+    background-color: rgba(0,0,0,0.4);
+}
+
+.navbar-brand {
+    font-size: 1.1rem;
+}
+
+.bi {
+    display: inline-block;
+    position: relative;
+    width: 1.25rem;
+    height: 1.25rem;
+    margin-right: 0.75rem;
+    top: -1px;
+    background-size: cover;
+}
+
+.bi-house-door-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-house-door-fill' viewBox='0 0 16 16'%3E%3Cpath d='M6.5 14.5v-3.505c0-.245.25-.495.5-.495h2c.25 0 .5.25.5.5v3.5a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5v-7a.5.5 0 0 0-.146-.354L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293L8.354 1.146a.5.5 0 0 0-.708 0l-6 6A.5.5 0 0 0 1.5 7.5v7a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5Z'/%3E%3C/svg%3E");
+}
+
+.bi-plus-square-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-plus-square-fill' viewBox='0 0 16 16'%3E%3Cpath d='M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2zm6.5 4.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3a.5.5 0 0 1 1 0z'/%3E%3C/svg%3E");
+}
+
+.bi-list-nested-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-list-nested' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.5 11.5A.5.5 0 0 1 5 11h10a.5.5 0 0 1 0 1H5a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 3 7h10a.5.5 0 0 1 0 1H3a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 1 3h10a.5.5 0 0 1 0 1H1a.5.5 0 0 1-.5-.5z'/%3E%3C/svg%3E");
+}
+
+.nav-item {
+    font-size: 0.9rem;
+    padding-bottom: 0.5rem;
+}
+
+    .nav-item:first-of-type {
+        padding-top: 1rem;
+    }
+
+    .nav-item:last-of-type {
+        padding-bottom: 1rem;
+    }
+
+    .nav-item ::deep a {
+        color: #d7d7d7;
+        border-radius: 4px;
+        height: 3rem;
+        display: flex;
+        align-items: center;
+        line-height: 3rem;
+    }
+
+.nav-item ::deep a.active {
+    background-color: rgba(255,255,255,0.37);
+    color: white;
+}
+
+.nav-item ::deep a:hover {
+    background-color: rgba(255,255,255,0.1);
+    color: white;
+}
+
+@media (min-width: 641px) {
+    .navbar-toggler {
+        display: none;
+    }
+
+    .collapse {
+        /* Never collapse the sidebar for wide screens */
+        display: block;
+    }
+    
+    .nav-scrollable {
+        /* Allow sidebar to scroll for tall menus */
+        height: calc(100vh - 3.5rem);
+        overflow-y: auto;
+    }
+}
--- a/DbFirst.BlazorWasm/Models/CatalogReadDto.cs
+++ b/DbFirst.BlazorWasm/Models/CatalogReadDto.cs
@@ -0,0 +1,12 @@
+namespace DbFirst.BlazorWasm.Models;
+
+public class CatalogReadDto
+{
+    public int Guid { get; set; }
+    public string CatTitle { get; set; } = string.Empty;
+    public string CatString { get; set; } = string.Empty;
+    public string AddedWho { get; set; } = string.Empty;
+    public DateTime AddedWhen { get; set; }
+    public string? ChangedWho { get; set; }
+    public DateTime? ChangedWhen { get; set; }
+}
--- a/DbFirst.BlazorWasm/Models/CatalogWriteDto.cs
+++ b/DbFirst.BlazorWasm/Models/CatalogWriteDto.cs
@@ -0,0 +1,7 @@
+namespace DbFirst.BlazorWasm.Models;
+
+public class CatalogWriteDto
+{
+    public string CatTitle { get; set; } = string.Empty;
+    public string CatString { get; set; } = string.Empty;
+}
--- a/DbFirst.BlazorWasm/Pages/Catalogs.razor
+++ b/DbFirst.BlazorWasm/Pages/Catalogs.razor
@@ -0,0 +1,212 @@
+@page "/catalogs"
+@inject CatalogApiClient Api
+
+<PageTitle>Catalogs</PageTitle>
+
+<h1>Catalogs</h1>
+
+@if (!string.IsNullOrWhiteSpace(errorMessage))
+{
+    <div class="alert alert-danger" role="alert">@errorMessage</div>
+}
+else if (!string.IsNullOrWhiteSpace(infoMessage))
+{
+    <div class="alert alert-success" role="alert">@infoMessage</div>
+}
+
+<div class="mb-3">
+    <button class="btn btn-primary" @onclick="StartCreate">Neuen Eintrag anlegen</button>
+</div>
+
+@if (showForm)
+{
+    <EditForm Model="formModel" OnValidSubmit="HandleSubmit">
+        <div class="row g-3">
+            <div class="col-md-6">
+                <label class="form-label">Titel</label>
+                <InputText class="form-control" @bind-Value="formModel.CatTitle" />
+            </div>
+            <div class="col-md-6">
+                <label class="form-label">Kennung</label>
+                <InputText class="form-control" @bind-Value="formModel.CatString" />
+            </div>
+        </div>
+
+        <div class="mt-3 d-flex gap-2">
+            <button type="submit" class="btn btn-success">@((isEditing ? "Speichern" : "Anlegen"))</button>
+            <button type="button" class="btn btn-secondary" @onclick="CancelEdit">Abbrechen</button>
+        </div>
+    </EditForm>
+}
+
+@if (isLoading)
+{
+    <p><em>Lade Daten...</em></p>
+}
+else if (items.Count == 0)
+{
+    <p>Keine Einträge vorhanden.</p>
+}
+else
+{
+    <table class="table table-striped">
+        <thead>
+            <tr>
+                <th>Id</th>
+                <th>Titel</th>
+                <th>String</th>
+                <th>Angelegt von</th>
+                <th>Angelegt am</th>
+                <th>Geändert von</th>
+                <th>Geändert am</th>
+                <th></th>
+            </tr>
+        </thead>
+        <tbody>
+            @foreach (var item in items)
+            {
+                <tr>
+                    <td>@item.Guid</td>
+                    <td>@item.CatTitle</td>
+                    <td>@item.CatString</td>
+                    <td>@item.AddedWho</td>
+                    <td>@item.AddedWhen.ToString("g")</td>
+                    <td>@item.ChangedWho</td>
+                    <td>@(item.ChangedWhen.HasValue ? item.ChangedWhen.Value.ToString("g") : string.Empty)</td>
+                    <td class="text-end">
+                        <button class="btn btn-sm btn-outline-primary me-2" @onclick="(() => StartEdit(item))">Bearbeiten</button>
+                        <button class="btn btn-sm btn-outline-danger" @onclick="(() => DeleteCatalog(item.Guid))">Löschen</button>
+                    </td>
+                </tr>
+            }
+        </tbody>
+    </table>
+}
+
+@code {
+    private List<CatalogReadDto> items = new();
+    private CatalogWriteDto formModel = new();
+    private int editingId;
+    private bool isLoading;
+    private bool isEditing;
+    private bool showForm;
+    private string? errorMessage;
+    private string? infoMessage;
+
+    protected override async Task OnInitializedAsync()
+    {
+        await LoadCatalogs();
+    }
+
+    private async Task LoadCatalogs()
+    {
+        isLoading = true;
+        errorMessage = null;
+        try
+        {
+            items = await Api.GetAllAsync();
+        }
+        catch (Exception ex)
+        {
+            errorMessage = $"Kataloge konnten nicht geladen werden: {ex.Message}";
+        }
+        finally
+        {
+            isLoading = false;
+            StateHasChanged();
+        }
+    }
+
+    private void StartCreate()
+    {
+        formModel = new CatalogWriteDto();
+        editingId = 0;
+        isEditing = false;
+        showForm = true;
+        infoMessage = null;
+        errorMessage = null;
+    }
+
+    private void StartEdit(CatalogReadDto item)
+    {
+        formModel = new CatalogWriteDto
+        {
+            CatTitle = item.CatTitle,
+            CatString = item.CatString
+        };
+        editingId = item.Guid;
+        isEditing = true;
+        showForm = true;
+        infoMessage = null;
+        errorMessage = null;
+    }
+
+    private async Task HandleSubmit()
+    {
+        errorMessage = null;
+        infoMessage = null;
+
+        try
+        {
+            if (isEditing)
+            {
+                var updated = await Api.UpdateAsync(editingId, formModel);
+                if (!updated)
+                {
+                    errorMessage = "Aktualisierung fehlgeschlagen.";
+                    return;
+                }
+
+                infoMessage = "Katalog aktualisiert.";
+            }
+            else
+            {
+                var created = await Api.CreateAsync(formModel);
+                if (created == null)
+                {
+                    errorMessage = "Anlegen fehlgeschlagen.";
+                    return;
+                }
+
+                infoMessage = "Katalog angelegt.";
+            }
+
+            showForm = false;
+            await LoadCatalogs();
+        }
+        catch (Exception ex)
+        {
+            errorMessage = $"Fehler beim Speichern: {ex.Message}";
+        }
+    }
+
+    private void CancelEdit()
+    {
+        showForm = false;
+        infoMessage = null;
+        errorMessage = null;
+    }
+
+    private async Task DeleteCatalog(int id)
+    {
+        errorMessage = null;
+        infoMessage = null;
+
+        try
+        {
+            var deleted = await Api.DeleteAsync(id);
+            if (!deleted)
+            {
+                errorMessage = "Löschen fehlgeschlagen.";
+                return;
+            }
+
+            infoMessage = "Katalog gelöscht.";
+            await LoadCatalogs();
+        }
+        catch (Exception ex)
+        {
+            errorMessage = $"Fehler beim Löschen: {ex.Message}";
+        }
+    }
+}
--- a/DbFirst.BlazorWasm/Pages/Home.razor
+++ b/DbFirst.BlazorWasm/Pages/Home.razor
@@ -0,0 +1,7 @@
+@page "/"
+
+<PageTitle>Home</PageTitle>
+
+<h1>Hello, world!</h1>
+
+Welcome to your new app.
--- a/DbFirst.BlazorWasm/Program.cs
+++ b/DbFirst.BlazorWasm/Program.cs
@@ -0,0 +1,14 @@
+using Microsoft.AspNetCore.Components.Web;
+using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+using DbFirst.BlazorWasm;
+using DbFirst.BlazorWasm.Services;
+
+var builder = WebAssemblyHostBuilder.CreateDefault(args);
+builder.RootComponents.Add<App>("#app");
+builder.RootComponents.Add<HeadOutlet>("head::after");
+
+var apiBaseUrl = builder.Configuration["ApiBaseUrl"] ?? builder.HostEnvironment.BaseAddress;
+builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(apiBaseUrl) });
+builder.Services.AddScoped<CatalogApiClient>();
+
+await builder.Build().RunAsync();
--- a/DbFirst.BlazorWasm/Properties/launchSettings.json
+++ b/DbFirst.BlazorWasm/Properties/launchSettings.json
@@ -0,0 +1,41 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:12804",
+      "sslPort": 44394
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
+      "applicationUrl": "http://localhost:5101",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
+      "applicationUrl": "https://localhost:7276;http://localhost:5101",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
--- a/DbFirst.BlazorWasm/Services/CatalogApiClient.cs
+++ b/DbFirst.BlazorWasm/Services/CatalogApiClient.cs
@@ -0,0 +1,49 @@
+using System.Net.Http.Json;
+using DbFirst.BlazorWasm.Models;
+
+namespace DbFirst.BlazorWasm.Services;
+
+public class CatalogApiClient
+{
+    private readonly HttpClient _httpClient;
+    private const string Endpoint = "api/catalogs";
+
+    public CatalogApiClient(HttpClient httpClient)
+    {
+        _httpClient = httpClient;
+    }
+
+    public async Task<List<CatalogReadDto>> GetAllAsync()
+    {
+        var result = await _httpClient.GetFromJsonAsync<List<CatalogReadDto>>(Endpoint);
+        return result ?? new List<CatalogReadDto>();
+    }
+
+    public async Task<CatalogReadDto?> GetByIdAsync(int id)
+    {
+        return await _httpClient.GetFromJsonAsync<CatalogReadDto>($"{Endpoint}/{id}");
+    }
+
+    public async Task<CatalogReadDto?> CreateAsync(CatalogWriteDto dto)
+    {
+        var response = await _httpClient.PostAsJsonAsync(Endpoint, dto);
+        if (!response.IsSuccessStatusCode)
+        {
+            return null;
+        }
+
+        return await response.Content.ReadFromJsonAsync<CatalogReadDto>();
+    }
+
+    public async Task<bool> UpdateAsync(int id, CatalogWriteDto dto)
+    {
+        var response = await _httpClient.PutAsJsonAsync($"{Endpoint}/{id}", dto);
+        return response.IsSuccessStatusCode;
+    }
+
+    public async Task<bool> DeleteAsync(int id)
+    {
+        var response = await _httpClient.DeleteAsync($"{Endpoint}/{id}");
+        return response.IsSuccessStatusCode;
+    }
+}
--- a/DbFirst.BlazorWasm/_Imports.razor
+++ b/DbFirst.BlazorWasm/_Imports.razor
@@ -0,0 +1,12 @@
+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.AspNetCore.Components.WebAssembly.Http
+@using Microsoft.JSInterop
+@using DbFirst.BlazorWasm
+@using DbFirst.BlazorWasm.Layout
+@using DbFirst.BlazorWasm.Models
+@using DbFirst.BlazorWasm.Services
--- a/DbFirst.BlazorWasm/wwwroot/appsettings.json
+++ b/DbFirst.BlazorWasm/wwwroot/appsettings.json
@@ -0,0 +1,3 @@
+{
+  "ApiBaseUrl": "https://localhost:7204/"
+}
--- a/DbFirst.BlazorWasm/wwwroot/css/app.css
+++ b/DbFirst.BlazorWasm/wwwroot/css/app.css
@@ -0,0 +1,103 @@
+html, body {
+    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
+}
+
+h1:focus {
+    outline: none;
+}
+
+a, .btn-link {
+    color: #0071c1;
+}
+
+.btn-primary {
+    color: #fff;
+    background-color: #1b6ec2;
+    border-color: #1861ac;
+}
+
+.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
+  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
+}
+
+.content {
+    padding-top: 1.1rem;
+}
+
+.valid.modified:not([type=checkbox]) {
+    outline: 1px solid #26b050;
+}
+
+.invalid {
+    outline: 1px solid red;
+}
+
+.validation-message {
+    color: red;
+}
+
+#blazor-error-ui {
+    background: lightyellow;
+    bottom: 0;
+    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
+    display: none;
+    left: 0;
+    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
+    position: fixed;
+    width: 100%;
+    z-index: 1000;
+}
+
+    #blazor-error-ui .dismiss {
+        cursor: pointer;
+        position: absolute;
+        right: 0.75rem;
+        top: 0.5rem;
+    }
+
+.blazor-error-boundary {
+    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
+    padding: 1rem 1rem 1rem 3.7rem;
+    color: white;
+}
+
+    .blazor-error-boundary::after {
+        content: "An error has occurred."
+    }
+
+.loading-progress {
+    position: relative;
+    display: block;
+    width: 8rem;
+    height: 8rem;
+    margin: 20vh auto 1rem auto;
+}
+
+    .loading-progress circle {
+        fill: none;
+        stroke: #e0e0e0;
+        stroke-width: 0.6rem;
+        transform-origin: 50% 50%;
+        transform: rotate(-90deg);
+    }
+
+        .loading-progress circle:last-child {
+            stroke: #1b6ec2;
+            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
+            transition: stroke-dasharray 0.05s ease-in-out;
+        }
+
+.loading-progress-text {
+    position: absolute;
+    text-align: center;
+    font-weight: bold;
+    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
+}
+
+    .loading-progress-text:after {
+        content: var(--blazor-load-percentage-text, "Loading");
+    }
+
+code {
+    color: #c02d76;
+}
--- a/DbFirst.BlazorWasm/wwwroot/css/bootstrap/bootstrap.min.css
+++ b/DbFirst.BlazorWasm/wwwroot/css/bootstrap/bootstrap.min.css
--- a/DbFirst.BlazorWasm/wwwroot/css/bootstrap/bootstrap.min.css.map
+++ b/DbFirst.BlazorWasm/wwwroot/css/bootstrap/bootstrap.min.css.map
--- a/DbFirst.BlazorWasm/wwwroot/favicon.png
+++ b/DbFirst.BlazorWasm/wwwroot/favicon.png
--- a/DbFirst.BlazorWasm/wwwroot/icon-192.png
+++ b/DbFirst.BlazorWasm/wwwroot/icon-192.png
--- a/DbFirst.BlazorWasm/wwwroot/index.html
+++ b/DbFirst.BlazorWasm/wwwroot/index.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>DbFirst.BlazorWasm</title>
+    <base href="/" />
+    <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" />
+    <link rel="stylesheet" href="css/app.css" />
+    <link rel="icon" type="image/png" href="favicon.png" />
+    <link href="DbFirst.BlazorWasm.styles.css" rel="stylesheet" />
+</head>
+
+<body>
+    <div id="app">
+        <svg class="loading-progress">
+            <circle r="40%" cx="50%" cy="50%" />
+            <circle r="40%" cx="50%" cy="50%" />
+        </svg>
+        <div class="loading-progress-text"></div>
+    </div>
+
+    <div id="blazor-error-ui">
+        An unhandled error has occurred.
+        <a href="" class="reload">Reload</a>
+        <a class="dismiss">🗙</a>
+    </div>
+    <script src="_framework/blazor.webassembly.js"></script>
+</body>
+
+</html>