Class TypeExtensions

Namespace: Cuemon.Extensions.DependencyInjection

Assembly: Cuemon.Extensions.DependencyInjection.dll

Extension methods for the Type class.

public static class TypeExtensions

Inheritance: object

TypeExtensions

Examples

The following example asks TryGetDependencyInjectionMarker whether a generic service type carries an IDependencyInjectionMarker<TMarker> contract and then reads the discovered marker type. It tests a DefaultService<OrdersChannel> that implements the marker interface, and a plain string type that does not. The boolean results and the resolved marker type are written to the console, demonstrating how to detect marker-interface contracts for DI service wiring at runtime.

using System;
using Cuemon.Extensions.DependencyInjection;

namespace Cuemon.Docs.Samples.DependencyInjection
{
    public static class TypeExtensionsExample
    {
        public static void Demonstrate()
        {
            var marked = typeof(DefaultService<OrdersChannel>).TryGetDependencyInjectionMarker(out var markerType);
            var plain = typeof(string).TryGetDependencyInjectionMarker(out _);

            Console.WriteLine(marked);
            Console.WriteLine(markerType == typeof(OrdersChannel));
            Console.WriteLine(plain);
        }

        public sealed class OrdersChannel
        {
        }

        public interface IMessageService
        {
        }

        public interface IMessageService<TMarker> : IMessageService, IDependencyInjectionMarker<TMarker>
        {
        }

        public sealed class DefaultService<TMarker> : IMessageService<TMarker>
        {
        }
    }
}

Methods

TryGetDependencyInjectionMarker(Type, out Type)

Returns a value that indicates whether the specified type contains an IDependencyInjectionMarker<TMarker> interface.

public static bool TryGetDependencyInjectionMarker(this Type type, out Type result)

Parameters

type Type: The Type to extend.
result Type: When this method returns, contains the Type of the generic parameter TMarker of IDependencyInjectionMarker<TMarker>; otherwise null if the specified type does not have an implemenation of the IDependencyInjectionMarker<TMarker> interface.

Returns