Get CustomAttributeValue Properties Value as String Array

Question

I want to get the PropertyValue of CustomAtrribute from all Class as String

Here is my Custom Attribute inherited from ExportAttribute

[JIMSExport("StockGroup","Stock")]

This attribute is attached on many class but with different parameters. First Parameter indicates ContractName and Second one say which Module it belongs to.

Now I want to get a dictionary

Dictionary<string, List<string>> moduleDict

with all ModuleName (2nd Parameter) and ContractName (1st Parameter), There can be classes with same module Name, so I need a List of Contract name with that Module Name

I am able to get all the JIMSExport attribute using Reflection but failed to generate the dictionary

var exported = GetTypesWith<JIMSExportAttribute>(false).Select(x => x.GetCustomAttributes(true).First());

Is there any better way of this doing using Caliburn Micro

Answer 1

maybe you are looking for something like this:

namespace AttributePlayground
{
    class Program
    {
        static void Main(string[] args)
        {
            var moduleDict = makeModuleDict();
        }

        public static Dictionary<string, List<string>> makeModuleDict()
        {
            var attribs = AppDomain.CurrentDomain
                .GetAssemblies()
                .SelectMany(
                    x => x.GetTypes()
                        .SelectMany(
                            y => y.GetCustomAttributes(typeof(JIMSExport), false)
                        )
                )
                .OfType<JIMSExport>();

            return attribs
                .GroupBy(x => x.Module)
                .ToDictionary(
                    x => x.Key,
                    x => new List<String>(
                        x.Select(y => y.ContractName)
                        )
                    );

        }

    }

    [JIMSExport("Module1", "Contract1")]
    public class TestClass1
    {

    }

    [JIMSExport("Module1", "Contract2")]
    public class TestClass2
    {

    }

    [JIMSExport("Module2", "Contract3")]
    public class TestClass3
    {

    }

    [JIMSExport("Module2", "Contract4")]
    public class TestClass4
    {

    }

    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = true)]
    sealed class JIMSExport : Attribute
    {
        public readonly string ContractName;
        public readonly string Module;
        public JIMSExport(string Module,string ContractName)
        {
            this.Module = Module;
            this.ContractName = ContractName;
        }

    }
}