public class Program
    {
        static void Main(string[] args)
        {
            // 1.CSharpCodePrivoder
            CSharpCodeProvider objCSharpCodePrivoder = new CSharpCodeProvider();

            // 2.ICodeComplier
            ICodeCompiler objICodeCompiler = objCSharpCodePrivoder.CreateCompiler();
            //CodeDomProvider objICodeCompiler = (ICodeCompiler)objCSharpCodePrivoder.CreateCompiler();
            // 3.CompilerParameters
            CompilerParameters objCompilerParameters = new CompilerParameters();
            objCompilerParameters.ReferencedAssemblies.Add("System.dll");
            //objCompilerParameters.ReferencedAssemblies.Add("System.dll");
            objCompilerParameters.GenerateExecutable = true;
            objCompilerParameters.GenerateInMemory = false;
            objCompilerParameters.CompilerOptions = "/out:d:/b.exe /target:exe";
            
            // 4.CompilerResults
            CompilerResults cr = objICodeCompiler.CompileAssemblyFromSource(objCompilerParameters, GenerateCode());
            //cr.PathToAssembly = "d:/a.exe";
            
            if (cr.Errors.HasErrors)
            {
                Console.WriteLine("编译错误：");
                foreach (CompilerError err in cr.Errors)
                {
                    Console.WriteLine(err.ErrorText);
                }
            }
            //Console.WriteLine(cr.PathToAssembly);
            //else
            //{
            //    // 通过反射，调用HelloWorld的实例
            //    Assembly objAssembly = cr.CompiledAssembly;
            //    object objHelloWorld = objAssembly.CreateInstance("DynamicCodeGenerate.HelloWorld");
            //    MethodInfo objMI = objHelloWorld.GetType().GetMethod("Main");

            //    Console.WriteLine(objMI.Invoke(objHelloWorld, null));
            //}

            Console.ReadLine();
            
        }

        static string GenerateCode()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("using System;using System.Text.RegularExpressions;");
            sb.Append(Environment.NewLine);
            sb.Append("namespace DynamicCodeGenerate");
            sb.Append(Environment.NewLine);
            sb.Append("{");
            sb.Append(Environment.NewLine);
            sb.Append("      public class HelloWorld");
            sb.Append(Environment.NewLine);
            sb.Append("      {");
            sb.Append(Environment.NewLine);
            sb.Append("          static void Main(string[] args)");
            sb.Append(Environment.NewLine);
            sb.Append("          {");
            sb.Append(Environment.NewLine);
            sb.Append("Regex rgx = new Regex();               Console.Write(\"Hello world!\");");
            sb.Append(Environment.NewLine);
            sb.Append("          }");
            sb.Append(Environment.NewLine);
            sb.Append("      }");
            sb.Append(Environment.NewLine);
            sb.Append("}");

            string code = sb.ToString();
            Console.WriteLine(code);
            Console.WriteLine();

            return code;
        }
    }