Printing list of enums in a particular namespace C#

Question

Is there a way to print all the enums in C# class library or namespace? I want the name to be printed with its values.

For example if I have the namespace as below:

namespace MyCompany.SystemLib
{
    public enum ItemStatus
    {
        None = 0,
        Active = 1,
        Inactive = 2    
    }

    public enum MyEnum
    {
        EnumVal1 = 1,
        EnumVal2 = 2,
        EnumVal3 = 3,

    }   
}

I would like to print them delimited as below (to a textfile) Bullet given for clarity here not needed in output.

• ItemStatus,None=0,Active=1,Inactive=1
• MyEnum,EnumVal1=1,EnumVal2=2,EnumVal3

I don't know where to start. Any help is appreciated.

Answer 1

Reflection to the rescue!

List<string> allEnums = new List<string>();
var allTypes = AppDomain.CurrentDomain.GetAssemblies().SelectMany(assembly => assembly.GetTypes());

foreach (Type type in allTypes)
{
    if (type.Namespace == "MyCompany.SystemLib" && type.IsEnum)
    {
        string enumLine = type.Name + ",";
        foreach (var enumValue in Enum.GetValues(type))
        {
            enumLine += enumValue + "=" + ((int)enumValue).ToString() + ",";
        }

        allEnums.Add(enumLine);
    }
}

The first line goes over all assemblies currently loaded in memory (because a namespace can be scattered over many DLLs and EXEs) and filters out those in the right namespace, and that are enums. This can be streamlined into a LINQ query if you'd like.

The inner loop goes over the values of the enum, and uses GetName to match the string to the value.

Answer 2

尝试使用Enum.GetNames()方法。

Answer 3

It can be done using LINQ and Reflection ofcourse.

var asm = Assembly.LoadFrom("path of the assembly");
var enums = asm.GetTypes().Where(x => x.IsEnum).ToList();

var result = enums
            .Select(
                x =>
                    string.Format("{0},{1}", x.Name,
                        string.Join(",",Enum.GetNames(x)
                        .Select(e => string.Format("{0}={1}", e, (int)Enum.Parse(x, e))))));

File.WriteAllLines("path", result);