Error CS1022: type or namespace definition, or end-of-file expected

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Throwing an error CS1022: Type or namespace definition, or end-of-file expected

What I have tried:

Program.cs

C#

  1  using System;
  2  using System.Collections.Generic;
  3  using System.Linq;
  4  using System.Threading.Tasks;
  5  using Microsoft.AspNetCore.Hosting;
  6  using Microsoft.Extensions.Configuration;
  7  using Microsoft.Extensions.Hosting;
  8  using Microsoft.Extensions.Logging;
  9  
 10  
 11  namespace BookListRazor
 12  {
 13      public class Program
 14      {
 15          public static void Main(string[] args)
 16          {
 17              CreateHostBuilder(args).Build().Run();
 18          }
 19  
 20          public static IHostBuilder CreateHostBuilder(string[] args) =>
 21              Host.CreateDefaultBuilder(args)
 22                  .ConfigureWebHostDefaults(webBuilder =>
 23                  {
 24                      webBuilder.UseStartup<Startup>();
 25                  });
 26      }
 27  }
 28  
 29  
 30  
 31  
 32  var builder = WebApplication.CreateBuilder(args);
 33  
 34  // Add services to the container.
 35  builder.Services.AddRazorPages();
 36  
 37  var app = builder.Build();
 38  
 39  // Configure the HTTP request pipeline.
 40  if (!app.Environment.IsDevelopment())
 41  {
 42      app.UseExceptionHandler("/Error");
 43      // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
 44      app.UseHsts();
 45  }
 46  
 47  app.UseHttpsRedirection();
 48  app.UseStaticFiles();
 49  
 50  app.UseRouting();
 51  
 52  app.UseAuthorization();
 53  
 54  app.MapRazorPages();
 55  
 56  app.Run();

Posted 13-Aug-22 3:25am

Vikas Goswami0297

Updated 15-Aug-22 3:55am

Richard MacCutchan

v2

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Richard Deeming · Answer 1 · 2022-08-15T03:55:00

At a guess, you're targeting .NET 6, and using the new top-level statements feature:
Top-level statements - C# tutorial | Microsoft Docs[^]

However, as the documentation says:

Top-level statements - programs without Main methods | Microsoft Docs[^]:
A file with top-level statements can also contain namespaces and type definitions, but they must come after the top-level statements.

You have added classes and methods before the top-level statements, which won't work.

You have also defined two entry-points: the top-level statements, and the Program.Main method.

It looks like you've tried to combine two lots of code by pasting the code from one application into the code from another, without actually understanding how either application is structured.

Richard MacCutchan · Answer 2 · 2022-08-13T03:34:00

Solution 1

The BookListRazor namespace is closed at line 27. So everything from that point on is orphaned code. That is to say, it has no namespace or class to contain it. A simple glance at the code makes this clear.

Posted 13-Aug-22 3:34am

Richard MacCutchan

OriginalGriff · Answer 3 · 2022-08-13T04:08:00

To add to what Richard has - correctly - said ...

In C# everything is part of a class, there is no "global code" or "global methods".
So when you write code like this:

namespace BookListRazor
12  {
13      public class Program
14      {
15          public static void Main(string[] args)
16          {
17              CreateHostBuilder(args).Build().Run();
18          }
19
20          public static IHostBuilder CreateHostBuilder(string[] args) =>
21              Host.CreateDefaultBuilder(args)
22                  .ConfigureWebHostDefaults(webBuilder =>
23                  {
24                      webBuilder.UseStartup<Startup>();
25                  });
26      }
27  }
28
29
30
31
32  var builder = WebApplication.CreateBuilder(args);
33
34  // Add services to the container.
35  builder.Services.AddRazorPages();

The two close curly brackets on lines 26 and 27 close the Program class and the BookListRazor namespace respectively, and are outside of any class (and indeed namespace).
As such, the lines of code after them won't compile - they cannot be accessed at all so the compiler refuses to have anything to do with them.

In addition, even if you moved them into the class, they still wouldn't compile because with the exception of field or property definitions all executable code code must be contained in a method.

I assume that they should actually be a part of the CreateHostBuilder method, but since you have used a short form method definition you would need to change that to a curly bracket form instead:

namespace BookListRazor
    {
    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>());

            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.
            builder.Services.AddRazorPages();
            ...
            }
        }
    }

Error CS1022: type or namespace definition, or end-of-file expected

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