C# GetMethod方法的应用实例讲解

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Data;
using System.Web.SessionState;
using System.Collections;
using System.Data.SqlClient;
using System.IO;
using System.Reflection;
namespace CCAPI
{
    public class CCAPI
    {
        public HttpContext httpc = HttpContext.Current;
        
        public CCAPI()
        {
        }
        public void init()
        {
            string getType = httpc.Request["getType"];
            if (getType == null)
            {
                httpc.Response.Write("{\"errcode\":2,\"errmsg\":\"暂时不能提供服务，未提供合法getType值。\"}");
                httpc.Response.End();
                return;
            }
            string resultJson = "";
            resultJson = RunGetTypeMethod(getType, null);
            httpc.Response.Write(resultJson);
       }
       string methodA()
        {
            string result = "{\"errcode\":{0},\"errmsg\":\"methodA\"}";
            return result;
        }
       string methodB()
        {
            string result = "{\"errcode\":{0},\"errmsg\":\"methodB\"}";
            return result;
        }
       string methodC()
        {
            string result = "{\"errcode\":{0},\"errmsg\":\"methodC\"}";
            return result;
        }
        public string RunGetTypeMethod(string methodName, object[] paras)
        {
            string result = "";
            Type pageType = this.GetType();
            MethodInfo mInfo = pageType.GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Instance);
            if (mInfo != null)
            {
                result = "{\"errcode\":2,\"errmsg\":\"方法存在，但无法返回任何值。\"}";
                object user_rv = mInfo.Invoke(this, paras);
                if (mInfo.ReturnType != typeof(void))
                    if (user_rv.GetType() == typeof(string)) result = (string)user_rv;
            }
            else
            {
                result = "{\"errcode\":2,\"errmsg\":\"getType不是合法的API访问功能值\"}";
            }
            return result;
        }
 
    }
}