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Added RSS Feed example
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‎BlazorRSSFeed/App.razor‎

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<Router AppAssembly="@typeof(App).Assembly">
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<Found Context="routeData">
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<RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)"/>
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<FocusOnNavigate RouteData="@routeData" Selector="h1"/>
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</Found>
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<NotFound>
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<PageTitle>Not found</PageTitle>
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<LayoutView Layout="@typeof(MainLayout)">
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<p role="alert">Sorry, there's nothing at this address.</p>
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</LayoutView>
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</NotFound>
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</Router>

‎BlazorRSSFeed/BlazorRSSFeed.csproj‎

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net6.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="System.ServiceModel.Syndication" Version="6.0.0" />
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</ItemGroup>
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</Project>

‎BlazorRSSFeed/BlazorRSSFeed.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlazorRSSFeed", "BlazorRSSFeed.csproj", "{2A419CAD-6798-4997-8B30-CDB82A50E28F}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{2A419CAD-6798-4997-8B30-CDB82A50E28F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{2A419CAD-6798-4997-8B30-CDB82A50E28F}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{2A419CAD-6798-4997-8B30-CDB82A50E28F}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{2A419CAD-6798-4997-8B30-CDB82A50E28F}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal

‎BlazorRSSFeed/Controller/RssFeedController.cs‎

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using System.ServiceModel.Syndication;
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using System.Text;
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using System.Xml;
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using Microsoft.AspNetCore.Mvc;
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namespace BlazorRSSFeed.Controller;
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public class RssFeedController : ControllerBase
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{
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[ResponseCache(Duration = 1200)]
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[HttpGet]
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[Route("feed.rss")]
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public async Task<IActionResult> GetRssFeed()
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{
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// Get the current url
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var url = $"{Request.Scheme}://{Request.Host}{Request.PathBase}";
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// This object reflects our RSS feed root item
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var feed = new SyndicationFeed(
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"Title",
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"This is a sample title",
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new Uri(url))
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{
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// You could create a list here of your blog posts for example
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Items = new[]
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{
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new SyndicationItem(
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"A Blog Post",
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"Somecontent",
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new Uri(url + "/url-to-your-sub-item"))
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}
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};
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// Create the XML Writer with it's settings
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var settings = new XmlWriterSettings
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{
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Encoding = Encoding.UTF8,
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NewLineHandling = NewLineHandling.Entitize,
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NewLineOnAttributes = true,
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Indent = true, // Makes it easier to read for humans
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Async = true, // You can omit this if you don't use the async API
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};
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using var stream = new MemoryStream();
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await using var xmlWriter = XmlWriter.Create(stream, settings);
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// Create the RSS Feed
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var rssFormatter = new Rss20FeedFormatter(feed, false);
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rssFormatter.WriteTo(xmlWriter);
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await xmlWriter.FlushAsync();
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return File(stream.ToArray(), "application/rss+xml; charset=utf-8");
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}
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}

‎BlazorRSSFeed/Data/WeatherForecast.cs‎

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namespace BlazorRSSFeed.Data;
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public class WeatherForecast
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{
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public DateTime Date { get; set; }
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public int TemperatureC { get; set; }
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public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
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public string? Summary { get; set; }
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}

‎BlazorRSSFeed/Data/WeatherForecastService.cs‎

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namespace BlazorRSSFeed.Data;
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public class WeatherForecastService
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{
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private static readonly string[] Summaries = new[]
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{
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"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
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};
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public Task<WeatherForecast[]> GetForecastAsync(DateTime startDate)
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{
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return Task.FromResult(Enumerable.Range(1, 5).Select(index => new WeatherForecast
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{
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Date = startDate.AddDays(index),
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TemperatureC = Random.Shared.Next(-20, 55),
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Summary = Summaries[Random.Shared.Next(Summaries.Length)]
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}).ToArray());
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}
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}

‎BlazorRSSFeed/Pages/Counter.razor‎

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@page "/counter"
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<PageTitle>Counter</PageTitle>
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<h1>Counter</h1>
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<p role="status">Current count: @currentCount</p>
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<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>
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@code {
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private int currentCount = 0;
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private void IncrementCount()
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{
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currentCount++;
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}
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}

‎BlazorRSSFeed/Pages/Error.cshtml‎

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@page
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@model BlazorRSSFeed.Pages.ErrorModel
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
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<title>Error</title>
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<link href="~/css/bootstrap/bootstrap.min.css" rel="stylesheet"/>
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<link href="~/css/site.css" rel="stylesheet" asp-append-version="true"/>
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</head>
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<body>
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<div class="main">
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<div class="content px-4">
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<h1 class="text-danger">Error.</h1>
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<h2 class="text-danger">An error occurred while processing your request.</h2>
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@if (Model.ShowRequestId)
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{
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<p>
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<strong>Request ID:</strong> <code>@Model.RequestId</code>
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</p>
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}
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<h3>Development Mode</h3>
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<p>
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Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
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</p>
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<p>
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<strong>The Development environment shouldn't be enabled for deployed applications.</strong>
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It can result in displaying sensitive information from exceptions to end users.
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For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
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and restarting the app.
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</p>
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</div>
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</div>
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</body>
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</html>

‎BlazorRSSFeed/Pages/Error.cshtml.cs‎

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using System.Diagnostics;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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namespace BlazorRSSFeed.Pages;
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[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
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[IgnoreAntiforgeryToken]
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public class ErrorModel : PageModel
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{
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public string? RequestId { get; set; }
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public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
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private readonly ILogger<ErrorModel> _logger;
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public ErrorModel(ILogger<ErrorModel> logger)
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{
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_logger = logger;
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}
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public void OnGet()
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{
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RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
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}
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}

‎BlazorRSSFeed/Pages/FetchData.razor‎

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@page "/fetchdata"
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<PageTitle>Weather forecast</PageTitle>
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@using BlazorRSSFeed.Data
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@inject WeatherForecastService ForecastService
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<h1>Weather forecast</h1>
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<p>This component demonstrates fetching data from a service.</p>
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@if (forecasts == null)
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{
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<p>
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<em>Loading...</em>
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</p>
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}
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else
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{
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<table class="table">
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<thead>
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<tr>
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<th>Date</th>
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<th>Temp. (C)</th>
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<th>Temp. (F)</th>
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<th>Summary</th>
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</tr>
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</thead>
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<tbody>
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@foreach (var forecast in forecasts)
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{
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<tr>
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<td>@forecast.Date.ToShortDateString()</td>
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<td>@forecast.TemperatureC</td>
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<td>@forecast.TemperatureF</td>
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<td>@forecast.Summary</td>
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</tr>
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}
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</tbody>
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</table>
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}
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@code {
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private WeatherForecast[]? forecasts;
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protected override async Task OnInitializedAsync()
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{
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forecasts = await ForecastService.GetForecastAsync(DateTime.Now);
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}
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}

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