C#获取类以及类下的方法(用于Asp.Net MVC)

在C#中，实现动态获取类和方法主要通过反射来实现，要引用System.Reflection。

public ActionResult GetControllerAndAction()
      List<Type> controllerTypes = new List<Type>();    //创建控制器类型列表
   var assembly = Assembly.Load("MySoft.UI");    //加载程序集
   controllerTypes.AddRange(assembly.GetTypes().Where(type => typeof(IController).IsAssignableFrom(type) && type.Name!="ErrorController"));    //获取程序集下所有的类，通过Linq筛选继承IController类的所有类型
   StringBuilder jsonBuilder = new StringBuilder();    //创建动态字符串，拼接json数据    注：现在json类型传递数据比较流行，比xml简洁
   jsonBuilder.Append("[");
   foreach (var controller in controllerTypes)//遍历控制器类
   {
       jsonBuilder.Append("{"controllerName":"");
      jsonBuilder.Append(controller.Name);
       jsonBuilder.Append("","controllerDesc":"");
       jsonBuilder.Append((controller.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute)==null?"" : (controller.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute).Description);    //获取对控制器的描述Description
       jsonBuilder.Append("","action":[");
       var actions = controller.GetMethods().Where(method => method.ReturnType.Name == "ActionResult");    //获取控制器下所有返回类型为ActionResult的方法，对MVC的权限控制只要限制所以的前后台交互请求就行，统一为ActionResult
       foreach (var action in actions)
       {
           jsonBuilder.Append("{"actionName":"");
           jsonBuilder.Append(action.Name);
           jsonBuilder.Append("","actionDesc":"");
           jsonBuilder.Append((action.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute) == null ? "" : (action.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute).Description);    //获取对Action的描述
           jsonBuilder.Append(""},");
       }
       jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
       jsonBuilder.Append("]},");
   }
   jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
   jsonBuilder.Append("]");
       return Content(jsonBuilder.ToString(),"json/text");t");