C# 通过反射获取MVC Controller里的类名，方法名，参数列表，返回值类型，Description描述，自定义Attribute

需要反射的DLL里的一个类：

namespace ElegantWM.WebUI.Areas.Admin.Controllers
{
    [Description("功能模块管理")]
    public class ModuleController : BaseController
    {
        [Action]
        [Description("根据系统编号，获取系统的功能模块")]
        [HttpGet]
        public string Get(Guid sysId)
        {
            ...
            return json;
        }

        [Action]
        [Description("新建功能模块")]
        [HttpPost]
        public JsonResult Create(WMS_Module module)
        {
           ...
        }

        [Action]
        [Description("修改功能模块")]
        [HttpPut]
        public JsonResult Update(WMS_Module module)
        {
           ...
        }

        [Action]
        [Description("删除功能模块")]
        [HttpDelete]
        public JsonResult Delete(WMS_Module module)
        {
            ...
        }
    }
}

反射代码：

Assembly assembly = Assembly.LoadFrom(@"ElegantWM.WebUI.dll");
            var types = assembly.GetTypes();
            foreach (var type in types)
            {
                if (type.BaseType.Name == "BaseController")//如果是Controller
                {
                    var members = type.GetMethods();
                    foreach (var member in members)
                    {
                        //获取HTTPAttribute
                        IEnumerable<Attribute> atts = member.GetCustomAttributes();
                        bool isAction = false;
                        foreach (Attribute a in atts)
                        {
                            if (a.GetType().Name == "Action" || a.GetType().Name == "Page")
                            {
                                richTextBox1.AppendText(a.GetType().Name + "\r\n");
                                isAction = true;
                            }
                            else if (a.ToString().Contains("System.Web.Mvc.Http"))
                            {
                                richTextBox1.AppendText(a.GetType().Name.Replace("Http", "").Replace("Attribute", "") + "\r\n");
                            }
                        }
                        if (!isAction) continue;

                        //获取返回值                            
　　　　　　　　　　　　　　richTextBox1.AppendText(member.ReturnType.Name + "\r\n");

                        //获取方法说明
                        object[] attrs = member.GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), true);
                        if (attrs.Length > )
                            richTextBox1.AppendText((attrs[] as System.ComponentModel.DescriptionAttribute).Description + "\r\n");

                        //获取参数
                        ParameterInfo[] param = member.GetParameters();
                        StringBuilder sb = new StringBuilder();
                        foreach (ParameterInfo pm in param)
                        {
                            sb.Append(pm.ParameterType.Name + " " + pm.Name + ",");
                        }
                        richTextBox1.AppendText("(" + sb.ToString().Trim(',') + ")" + "\r\n");

                        //获取方法名称
                        richTextBox1.AppendText(member.Name + "\r\n");

                        //获取类名
                        richTextBox1.AppendText(member.DeclaringType.Name + "\r\n");

                        richTextBox1.AppendText("--------------------------\r\n");

                    }
                }
            }