/// <summary>
/// 自定義一個(gè)Attribute類型
/// </summary>
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
public class CustomAttribute : Attribute
{
    public string TargetMethod { get; set; }

    public CustomAttribute(string targetMethod)
    {
        TargetMethod = targetMethod;
    }
}

/// <summary>
/// 前進(jìn)服務(wù)
/// </summary>
[Custom("AdvanceWay")]
public class AdvanceService
{
    public void AdvanceWay()
    {
        Console.WriteLine("On the move!");
    }
}

/// <summary>
/// 后退服務(wù)
/// </summary>
[Custom("RetreatWay")]
public class RetreatService
{
    public void RetreatWay()
    {
        Console.WriteLine("Be retreating!");
    }
}

var services = new ServiceCollection();

//注冊需要注入的服務(wù)
services.AddTransient<AdvanceService>();
services.AddTransient<RetreatService>();

    static void Main(string[] args)
    {
        var services = new ServiceCollection();

        //注冊需要注入的服務(wù)
        services.AddTransient<AdvanceService>();
        services.AddTransient<RetreatService>();

        var provider = services.BuildServiceProvider();

        #region 反射獲取所有帶有CustomAttribute特性的類并調(diào)用對應(yīng)方法

        //反射獲取所有帶有CustomAttribute特性的類
        var classes = Assembly.GetExecutingAssembly().GetTypes()
            .Where(type => type.GetCustomAttributes<CustomAttribute>().Any());

        foreach (var clazz in classes)
        {
            //獲取標(biāo)記CustomAttribute的實(shí)例
            var attr = clazz.GetCustomAttributes<CustomAttribute>().First();

            //根據(jù)CustomAttribute元數(shù)據(jù)信息調(diào)用對應(yīng)的方法
            var methodInfo = clazz.GetMethod(attr.TargetMethod);
            if (methodInfo != null)
            {
                //instance 對象是通過依賴注入容器獲取的。這是一種常用的實(shí)現(xiàn)方式，可以使用依賴注入解耦程序中各個(gè)組件之間的依賴關(guān)系，方便測試和維護(hù)。
                var instance = provider.GetService(clazz);
                methodInfo.Invoke(instance, null);
            }
        }

        #endregion

        #region 反射獲取所有帶有CustomAttribute特性的類并調(diào)用指定方法

        var executionMethod = "RetreatWay";

        foreach (var clazz in classes)
        {
            //獲取標(biāo)記CustomAttribute的實(shí)例
            var attr = clazz.GetCustomAttributes<CustomAttribute>().First();

            if (attr.TargetMethod == executionMethod)
            {
                //根據(jù)CustomAttribute元數(shù)據(jù)信息調(diào)用對應(yīng)的方法
                var methodInfo = clazz.GetMethod(attr.TargetMethod);
                if (methodInfo != null)
                {
                    //instance 對象是通過依賴注入容器獲取的。這是一種常用的實(shí)現(xiàn)方式，可以使用依賴注入解耦程序中各個(gè)組件之間的依賴關(guān)系，方便測試和維護(hù)。
                    var instance = provider.GetService(clazz);
                    methodInfo.Invoke(instance, null);
                }
            }
        }

        #endregion

        Console.ReadLine();
    }