Although most of the attention is on .NET Core, development continues on the original .NET Framework. Microsoft has recently released a preview of .NET Framework 4.7.2 with updates to ASP.NET, ADO.NET, WCF, WPF, and even Windows Forms. You can see the complete release notes on GitHub.
For now, Microsoft's .NET Core milestones page shows .NET 5.0 about 53 percent complete, with 1,066 issues open and 1,216 issues closed.
Highlights of .NET 5 include:
REACT_APP_NAME=My App REACT_APP_VERSION=1
console.log(process.env);
console.log("My App Name", process.env.REACT_APP_NAME); 
> npm install -g serve > serve -s build
Access to XMLHttpRequest at 'https://localhost:5001/api/genres' from origin 'http://localhost:1234' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
WithOrigins("http://localhost:3000", "http://localhost:1234") REACT_APP_API_URL=https://localhost:5001/api REACT_APP_ADMIN_ROLE_NAME=Admin
const apiEndpoint = apiUrl + "/users";
const apiEndpoint = "/users";
axios.defaults.baseURL = process.env.REACT_APP_API_URL;
const adminRoleName = process.env.REACT_APP_ADMIN_ROLE_NAME;
.NET 6 will reach end of support on Nov 12, 2024. After that, Microsoft will no longer provide updates for .NET 6. Security fixes and technical support will no longer be available for .NET 6. You’ll need to update to .NET 8 before this date to stay supported.
namespace Core1RtmEmptyTest.Services
{
public interface IMessagesService
{
string GetSiteName();
}
public class MessagesService : IMessagesService
{
public string GetSiteName()
{
return "DNT";
}
}
} 
{
"dependencies": {
// same as before
"Core1RtmEmptyTest.Services": "1.0.0-*"
}, public void Configure( IApplicationBuilder app, IHostingEnvironment env, IMessagesService messagesService)
public void Configure(
IApplicationBuilder app,
IHostingEnvironment env,
IMessagesService messagesService)
{
app.Run(async context =>
{
var siteName = messagesService.GetSiteName();
await context.Response.WriteAsync($"Hello {siteName}");
});
} System.InvalidOperationException No service for type 'Core1RtmEmptyTest.Services.IMessagesService' has been registered. at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) at Microsoft.AspNetCore.Hosting.Internal.ConfigureBuilder.Invoke(object instance, IApplicationBuilder builder) System.Exception Could not resolve a service of type 'Core1RtmEmptyTest.Services.IMessagesService' for the parameter 'messagesService' of method 'Configure' on type 'Core1RtmEmptyTest.Startup'. at Microsoft.AspNetCore.Hosting.Internal.ConfigureBuilder.Invoke(object instance, IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddTransient<IMessagesService, MessagesService>();
} 
{
"dependencies": {
// same as before
"StructureMap.Dnx": "0.5.1-rc2-final"
}, public class Startup
{
public IServiceProvider ConfigureServices(IServiceCollection services)
{
services.AddDirectoryBrowser();
var container = new Container();
container.Configure(config =>
{
config.Scan(_ =>
{
_.AssemblyContainingType<IMessagesService>();
_.WithDefaultConventions();
});
//config.For<IMessagesService>().Use<MessagesService>();
config.Populate(services);
});
container.Populate(services);
return container.GetInstance<IServiceProvider>();
} You can do custom routing based on subdomains using dynamic routes. In this episode we'll explore how to do that.
CVE-2020-0602 ASP.NET Core Denial of Service Vulnerability
CVE-2020-0603 ASP.NET Core Remote Code Execution Vulnerability
CVE-2020-0605 .NET Core Remote Code Execution Vulnerability
CVE-2020-0606 .NET Core Remote Code Execution Vulnerability
<a href="/not-blazor" data-enhance-nav="false">A non-Blazor page</a>
<form method="post" @onsubmit="() => submitted = true" @formname="name" data-enhance>
<AntiforgeryToken />
<InputText @bind-Value="Name" />
<button>Submit</button>
</form>
@if (submitted)
{
<p>Hello @Name!</p>
}
@code {
bool submitted;
[SupplyParameterFromForm]
public string Name { get; set; } = "";
} <EditForm method="post" Model="NewCustomer" OnValidSubmit="() => submitted = true" FormName="customer" Enhance>
<DataAnnotationsValidator />
<ValidationSummary/>
<p>
<label>
Name: <InputText @bind-Value="NewCustomer.Name" />
</label>
</p>
<button>Submit</button>
</EditForm>
@if (submitted)
{
<p id="pass">Hello @NewCustomer.Name!</p>
}
@code {
bool submitted = false;
[SupplyParameterFromForm]
public Customer? NewCustomer { get; set; }
protected override void OnInitialized()
{
NewCustomer ??= new();
}
public class Customer
{
[StringLength(3, ErrorMessage = "Name is too long")]
public string? Name { get; set; }
}
} <div data-permanent>
Leave me alone! I've been modified dynamically.
</div> <script>
Blazor.addEventListener('enhancedload', () => {
console.log('enhanced load event occurred');
});
</script> <div class="border border-info rounded bg-info" style="height:500px"></div> <h2 id="targetElement">Target H2 heading</h2> <p>Content!</p>
<a href="/counter#targetElement">
<NavLink href="/counter#targetElement">
Navigation.NavigateTo("/counter#targetElement");