C# 通过放射获取扩展方法

注意，扩展方法本质上是静态方法，所以拿到MethodInfo时，应该这么调用 methodInfo.Invoke(null, new object[]{params})

 1 static IEnumerable<MethodInfo> GetExtensionMethods(Assembly assembly, Type extendedType)
 2         {
 3             var query = from type in assembly.GetTypes()
 4                         where !type.IsGenericType && !type.IsNested
 5                         from method in type.GetMethods(BindingFlags.Static
 6                             | BindingFlags.Public | BindingFlags.NonPublic)
 7                         where method.IsDefined(typeof(System.Runtime.CompilerServices.ExtensionAttribute), false)
 8                         where method.GetParameters()[0].ParameterType == extendedType
 9                         select method;
10             return query;
11         }