c# - Get AssemblyTitle

Question

I know the .NET Core replacement for Assembly.GetExecutingAssembly() is typeof(MyType).GetTypeInfo().Assembly, but what about the replacement for

Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyTitleAttribute), false)

I have tried appending the last bit of the code after assembly for the first solution mentioned like so:

typeof(VersionInfo).GetTypeInfo().Assembly.GetCustomAttributes(typeof(AssemblyTitleAttribute));

but it gives me a "Can't implicitly convert to object[] message.

UPDATE: Yes, as comments below indicate, I believe it is linked to the output type.

Here is the code snippet, and I am just trying to change it to be compatible with .Net Core:

public class VersionInfo 
{
    public static string AssemlyTitle 
    {
        get 
        {
            object[] attributes = Assembly
                .GetExecutingAssembly()
                .GetCustomAttributes(typeof (AssemblyTitleAttribute), false);
          // More code follows
        }
    }
}

I have tried changing this to use CustomAttributeExtensions.GetCustomAttributes() but I don't know how to implement the same code as above. I still get mixed up about MemberInfo and Type and the like.

Any help is extremely appreciated!

Where do you get the error message? Is `VersionInfo` in the same assembly as the `AssemblyTitle` you're trying to read? — Nate Barbettini, Jul 20 '16 at 18:51

score 30 · Answer 1 · answered Aug 30 '18 at 17:01

30

Wouldn't this be the simplest?

string title = Assembly.GetExecutingAssembly().GetCustomAttribute<AssemblyTitleAttribute>().Title;

Just say'in.

answered Aug 30 '18 at 17:01

3

In some situations, one may consider substituting `GetEntryAssembly` instead of `GetExecutingAssembly`, such as when creating a progress dialog box in a class library that you want to have display the calling application's title. – Wyck Feb 20 '20 at 01:49

svick · Accepted Answer · 2016-07-20T22:01:29.097

12

I suspect that the issue is in code you have not shown: where you use the result of GetCustomAttributes(). That's because Assembly.GetCustomAttributes(Type, bool) in .Net Framework returns object[], while CustomAttributeExtensions.GetCustomAttributes(this Assembly, Type) in .Net Core returns IEnumerable<Attribute>.

So you need to modify your code accordingly. The simplest way would be to use .ToArray<object>(), but a better solution might be to change your code so that it can work with IEnumerable<Attribute>.

edited Jul 20 '16 at 22:01

answered Jul 20 '16 at 20:49

svick

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You have definitely shed some light on the situation. I have added more of the code I am working with in the hopes of getting some additional guidance. – PirateJubber Jul 20 '16 at 21:47
@PirateJubber Added. – svick Jul 20 '16 at 22:01

score 9 · Answer 3 · answered Jul 20 '16 at 18:50

This works for me in .NET Core 1.0:

using System;
using System.Linq;
using System.Reflection;

namespace SO_38487353
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var attributes = typeof(Program).GetTypeInfo().Assembly.GetCustomAttributes(typeof(AssemblyTitleAttribute));
            var assemblyTitleAttribute = attributes.SingleOrDefault() as AssemblyTitleAttribute;

            Console.WriteLine(assemblyTitleAttribute?.Title);
            Console.ReadKey();
        }
    }
}

AssemblyInfo.cs

using System.Reflection;

[assembly: AssemblyTitle("My Assembly Title")]

project.json

{
  "buildOptions": {
    "emitEntryPoint": true
  },
  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
    "System.Runtime": "4.1.0"
  },
  "frameworks": {
    "netcoreapp1.0": { }
  }
}

I neglected to share the entire situation of what I was trying to do, but you are right, your solution does fix the error. Is there any way to rework it to work with object[]? — PirateJubber, Jul 20 '16 at 21:49

score 6 · Answer 4 · answered Jan 24 '17 at 14:36

This works for me:

public static string GetAppTitle()
{
    AssemblyTitleAttribute attributes = (AssemblyTitleAttribute)Attribute.GetCustomAttribute(Assembly.GetExecutingAssembly(), typeof(AssemblyTitleAttribute), false);

    return attributes?.Title;
}

score 2 · Answer 5 · answered May 11 '17 at 18:46

2

This is what i use:

private string GetApplicationTitle => ((AssemblyTitleAttribute)Attribute.GetCustomAttribute(Assembly.GetExecutingAssembly(), typeof(AssemblyTitleAttribute), false))?.Title ?? "Unknown Title";

answered May 11 '17 at 18:46

Mike

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c# - Get AssemblyTitle

5 Answers5

Linked