// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002731/object-getmethod

​

// @nuget: Z.ExtensionMethods

using System;

using System.Reflection;

using System.Runtime.InteropServices;

public class Program

{

    public static void Main()

    {

        //C# Extension Method: Object - GetMethod

        MethodInfo  StaticMethod = typeof(MethodModel<int>).GetMethod("StaticMethod", BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

        MethodInfo  VirtualMethod = typeof(MethodModel<int>).GetMethod("VirtualMethod", BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

        MethodInfo  ProtectedInternalMethod = typeof(MethodModel<int>).GetMethod("ProtectedInternalMethod", BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

        Console.WriteLine(StaticMethod.GetDeclaraction());

        Console.WriteLine(VirtualMethod.GetDeclaraction());

        Console.WriteLine(ProtectedInternalMethod.GetDeclaraction());

    }

    public class MethodModel<T> : AbstractMethodModel

    {

        public class Toto<T2> {}

        public static int StaticMethod() { return 1; }

        public override int OverrideMethod() { return 1; }

        public virtual int VirtualMethod() { return 1; }

        public int PublicMethod() { return 1; }

        private int PrivateMethod() { return 1; }

        internal int InternalMethod() { return 1; }

        protected int ProtectedMethod() { return 1; }

        protected internal int ProtectedInternalMethod() { return 1; }

        public int OutParameterMethod(out int i)

        {

            i = 1;

            return 1;

        }

        public int RefParameterMethod(ref int i) { return 1; }

        public int ParamsParameterMethod(params int[] i) { return 1; }

        public int OptionalParameterMethod(int i = 1) { return 1; }

        public int InParameterModifierMethod([In] int i) { return 1; }

        public int OutParameterModifierMethod([Out] int i)

        {

            i = 1;

            return 1;

        }

​

        public int OptionalParameterModifierMethod([Optional] int i) { return 1; }

​

        public T GenericTypeMethod(T i) { return i; }

​

        public T1 GenericMethod<T1, T2>(T1 i, T2 i2) { return i; }

        public override int AbstractMethod()  { throw new NotImplementedException(); }

    }

​

    public abstract class AbstractMethodModel

    {

        public abstract int AbstractMethod();

        public abstract int OverrideMethod();

    }

}

​

public static class ExtensionMethodModel

{

    public static int ExtensionParameterMethod(this int i)

    {

        return 1;

    }

}

​