怎么实现把函数名(常量)当成函数执行

怎样实现把函数名(常量)当成函数执行
比如我有一个函数，Do_Task(int ID)，现在数据库里存有Do_Task(2),Do_Task(3),现在读数据库并执行Do_Task(2),Do_Task(3)

[解决办法]

C# code

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Text.RegularExpressions;namespace ConsoleApplication1{    class A    {        public void DoTask(int id) { Console.WriteLine("dotask: " + id); }        public void DoAnotherTask(int id) { Console.WriteLine("other: " + id); }    }    class Program    {        static void Main(string[] args)        {            string s1 = "DoTask(2)";            string s2 = "DoAnotherTask(100)";            ExeMethod(s1);            ExeMethod(s2);        }        static void ExeMethod(string exp)        {            string methodname = Regex.Match(exp, @"\w+(?=\()").Value;            int param = int.Parse(Regex.Match(exp, @"(?<=\()\d+(?=\))").Value);            typeof(A).GetMethods().First(x => x.Name == methodname).Invoke(new A(), new object[] { param });                    }    }}
[解决办法]
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引用:

C# code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
class A
……