I am unable to run my web application project in IIS Express after migrating from .net 5 to .net 6. I get an error stating that "the localhost page can't be found."
From what I've been able to learn, I have gone through the proper steps to migrate between target frameworks. I have changed the target framework to .net 6 in application properties, and I have updated all affected NuGet packages using the NuGet Pkg Manager. No errors are shown when I build the project, and I have ensured Visual Studio is updated to the latest version, 17.2.5 as of this writing.
The IIS Settings in my launchsettings.json file are as follows:
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:35317",
"sslPort": 44352
}
}
and I do have an Index view return in my home controller. Yet I still get the error that
No webpage was found for the web address: https://localhost:44352/
when I run the application.
I am retaining the "old" hosting model of Startup.cs and Program.cs from the .Net 5 build to save time, as I understand per Microsoft that this is acceptable. No changes have been made to the code in either of those files.
What am I missing?
EDIT: My Program.cs code is below, by request of #adrianMoskal
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
EDIT 2:
Per #adrianMoskal, I updated my Program.cs file to .NET 6 standard. It now looks like this:
var builder = WebApplication.CreateBuilder(args);
// Add DB Contexts and Services here
// Add services to the container.
builder.Services.AddControllersWithViews();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();
Unfortunately, the error persists.
I created a new project to migrate from .net 5 to .net 6, but no problem, it works fine, I will show you the complete steps：
.csproj:
change Version like below:
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<!--<TargetFramework>net5.0</TargetFramework>-->
<TargetFramework>net6.0</TargetFramework>
<RootNamespace>_2022070802</RootNamespace>
<CopyRefAssembliesToPublishDirectory>false</CopyRefAssembliesToPublishDirectory>
</PropertyGroup>
<ItemGroup>
<!--<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="5.0.16" />-->
<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="6.0.1" />
</ItemGroup>
</Project>
Then I delete Startup.cs and change Program.cs：
var builder = WebApplication.CreateBuilder(args);
// Add DB Contexts and Services here
// Add services to the container.
builder.Services.AddControllersWithViews();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();
More detail information, see this link.
You can create a new empty project to migrate from .net 5 to .net 6 and see if the problem still exists.I think this may be the problem caused by some of your configuration, maybe you can check whether your path is correct?
Chen's answer is the correct migration step.
I tried to reproduce your issue. When I comment Index page method in HomeController. And I face the same issue.
So you probably deleted your "Index" action in HomeController.
The answer appears to be "screw you, start over."
I've tried copying my project code to a new .net 6 project -- that is, copying all the views, controllers, and whatnot to the new project and updating the new Program.cs file accordingly -- and I still got the same error. I then tried converting a different .net 5 project to .net 6, and got the same error again. So apparently, converting just doesn't work.
So be it. I quit. I've got too much else to do to worry about this. Thanks to those who responded to this post for trying to help resolve it, anyway.
Trying to configure portable object localization in Blazor server app with .NET 6 following instructions from video "ASP.NET Community Standup - Localizing the .NET Website" from minute 23:54 on, but I can't get it working.
At its simplest stage, the video recommends next steps:
append .AddViewLocalization() to Program.cs builder.Services.AddRazorPages() line.
add the line app.UseRequestLocalization() to Program.cs after app.UseRouting()
on any page (index.razor in my case) add #using Microsoft.AspNetCore.Mvc.Localization and #inject IViewLocalizer T
change any string into its localizable version as Hello, world! into #T["Hello, world!"]
But it throws a System.NullReferenceException in #T["Hello, world!"]
Any ideas? I could not find any further documentation for Po files in Blazor server apps
My Program.cs:
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using TestOrhard.Data;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddRazorPages().AddViewLocalization();
builder.Services.AddServerSideBlazor();
builder.Services.AddSingleton<WeatherForecastService>();
var app = builder.Build();
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseRequestLocalization();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");
app.Run();
My Index.razor:
#page "/"
#using Microsoft.AspNetCore.Mvc.Localization
#inject IViewLocalizer T
<PageTitle>Index</PageTitle>
<h1>#T["Hello, world!"]</h1>
Welcome to your new app.
<SurveyPrompt Title="How is Blazor working for you?" />
VS generates the following code in Startup.cs:
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseSwagger();
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "project name v1"));
}
So, it seems that the whole point of using the thing called Swagger is for testing the API during debugging. Then, why are the parameters field disabled by default and I have to click "Try it out" each time? Shouldn't the input fields be enabled by default? How should I modify the generated Startup.cs to enabling the parameters fields by default without pressing the Try button each time?
You can use this method - EnableTryItOutByDefault
app.UseSwaggerUI(c =>
{
c.EnableTryItOutByDefault();
});
There won't be any Try Out button and parameters fields will be enabled by default.
I have updated my project to Net Core 5 (from 3.1) using Razor Pages.
I use the standard Razor endpoint routing with folders. Now only routes to subfolders (e.g. "Host.com/Folder1/Folder2/Site") work, but not to simple folders (e.g. "Host.com/Folder1/Site").
CRUD routing also works in subfolders (e.g. "Host.com/Folder1/Folder2/Site/Create").
I only use the default routing in the startup file:
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapRazorPages();
endpoints.MapControllers();
});
I have set up an empty WebAPI project with .NET Core rc2 and have it wired up with Angular2 rc1. Angular will handle everything view related and the WebAPI is the backend.
When I start the app by default it comes up with localhost:4578/api/values from the default API controller as startpage.
However, I want it to show index.html by default which is located in wwwroot and is hosting my Angular2 app.
In Startup.cs the Configure method looks like this:
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
app.UseDefaultFiles();
app.UseStaticFiles();
app.UseMvc();
app.Run(ctx =>
{
ctx.Response.Redirect("/index.html");
return Task.FromResult(0);
});
}
app.UseStaticFiles and the app.Run lambda need to be in place for the manual redirect to index.html to work but it still comes up with /api/values as default start page.
I know that for debugging purposes I can change the start page easily but I want to change it such that when I host it it always serves index.html as start page.
How can I change this?
When creating a new empty WebAPI project, the launchsettings.json file points to api/values by default. To change it, go to the launchsettings.json file in your project:
and change the launchUrl value to: http://localhost:4578 (from http://localhost:4578/api/values).