#region using directiry using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.CodeDom; using System.CodeDom.Compiler; using System.Reflection; using Microsoft.CSharp; #endregion /*==============================================================================  *  * author:lichaoqiang@163.com  * link:http://my.oschina.net/lichaoqiang  *  *  * ============================================================================*/ namespace CodeDom {     class Program     {         #region 主程序入口         /// <summary>         ///主程序入口         /// </summary>         /// <param name="args"></param>         static void Main(string[] args)         {             //1>实例化C#代码服务提供对象             CSharpCodeProvider provider = new CSharpCodeProvider();             //2>声明编译器参数             CompilerParameters parameters = new CompilerParameters();             parameters.GenerateExecutable = false;             parameters.GenerateInMemory = true;             try             {                 //3>动态编译                 CompilerResults result = provider.CompileAssemblyFromSource(parameters, BuildCSharpCode());                 if (result.Errors.Count > 0)                 {                     Console.Write("编译出错！");                 }                 //4>如果编译没有出错，此刻已经生成动态程序集LCQ.LCQClass                 //5>开始玩C#映射                 Assembly assembly = result.CompiledAssembly;                 object obj = assembly.CreateInstance("LCQ.LCQClass");                 Type type = assembly.GetType("LCQ.LCQClass");                 //6>获取对象方法                 MethodInfo method = type.GetMethod("Sum");                 object[] objParameters = new object[2] { 1, 5 };                 int iResult = Convert.ToInt32(method.Invoke(obj, objParameters));//唤醒对象，执行行为                 Console.Write(iResult);                 Console.Read();             }             catch (System.NotImplementedException ex)             {                 Console.Write(ex.Message);             }             catch (System.ArgumentException ex)             {                 Console.Write(ex.Message);             }             catch (Exception ex)             {                 Console.Write(ex.Message);             }         }         #endregion         #region 生成代码块         /// <summary>         /// 生成代码块         /// </summary>         /// <returns></returns>         private static string BuildCSharpCode()         {             string fileName = AppDomain.CurrentDomain.BaseDirectory.Replace("Debug", string.Empty).Replace("Release", string.Empty) + "CodeFile.cs";             string strCodeDom = File.ReadAllText(fileName);             return strCodeDom;         }         #endregion     } }