Question

Shamed by this simple question. For some reason, I want to put all asp.net URLs in an enum. But I got an error: identifer expected

My code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Admin.Code
{
    public enum url
    {
       /_layouts/Admin/test1.aspx,
       /_layouts/Admin/test2.aspx,
       /_layouts/Admin/test3.aspx
    }

    class AdminUrlSettings
    {
    }
}

Thanks.

Answer 1

Identifiers in C# can’t contain / characters. They are limited to underscores, letters and numbers (and possibly a @ prefix). To fix this you need to make the enum values valid C# identifiers

enum url {
  test1,
  test2,
  test3
}

Later turning these into an actual valid url can be done with a switch statement over the value

public static string GetRelativeUrl(url u) {
  switch (u) {
    case url.test1:
      return "/_layouts/Admin/test1.aspx";
    case url.test2:
      return "/_layouts/Admin/test2.aspx";
    case url.test3:
      return "/_layouts/Admin/test3.aspx";
    default: 
      // Handle bad URL, possibly throw
      throw new Exception();
  }
}