C# 运行时编译代码并执行 【转】

public static void Main(string[] args)
        {
            string test = @"
            int MAX_N = 100;
            int n = 10;
            int i = 10;
            int k = 10;
            int l = 10;
            return ((n == MAX_N) && (i < MAX_N))|((k == MAX_N) && (l < MAX_N));
            ";

            string code = CodeBegin + test + CodeEnd;
            Console.WriteLine(code);
            CSharpCodeProvider provider = new CSharpCodeProvider();
            ICodeCompiler compiler = provider.CreateCompiler();
            CompilerParameters param = new CompilerParameters();
            param.ReferencedAssemblies.Add("System.dll");
            param.GenerateExecutable = false;
            param.GenerateInMemory = true;
            CompilerResults cr = compiler.CompileAssemblyFromSource(param, code);
            if (cr.Errors.HasErrors)
            {
                Console.WriteLine("编译错误：");
                foreach (CompilerError err in cr.Errors)
                    Console.WriteLine(err.ErrorText);
            }
            else
            {
                Assembly assembly = cr.CompiledAssembly;
                MethodInfo mi = assembly.GetType("RuntimeCompute.JudgeCondition").GetMethod("GetValue");
                object value = mi.Invoke(null, null);
                Console.WriteLine(value);
            }

            Console.ReadKey(true);
        }
        static string CodeBegin = @"
using System;

namespace RuntimeCompute
{
    class JudgeCondition
    {
        public static bool GetValue()
        {
";

        static string CodeEnd = @"
        }
    }
}
";

 转自 http://blog.csdn.net/icedmilk/article/details/6724046