一個動態編譯的簡單例子

 

using System;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Reflection;

public class Example
{
 static void Main()
 {
  CSharpCodeProvider provider = new CSharpCodeProvider();
  System.CodeDom.Compiler.ICodeCompiler compiler = provider.CreateCompiler();
  CompilerParameters parameter = new CompilerParameters();
  parameter.ReferencedAssemblies.Add("System.dll");
  parameter.GenerateExecutable = false;
  parameter.GenerateInMemory = true;

  string strCode = GenerateCode("0", "1", ">");
  CompilerResults result = compiler.CompileAssemblyFromSource(parameter, strCode);
  if (result.Errors.HasErrors)
  {
   foreach (CompilerError err in result.Errors)
   {
    Console.WriteLine(err.ErrorText);
   }

   //foreach (string str in result.Output)
   //{
   // Console.WriteLine(str);
   //}
  }
  else
  {
   Assembly assembly = result.CompiledAssembly;
   Type AType = assembly.GetType("MyNameSpace.MyClass");
   MethodInfo method = AType.GetMethod("MyFunc");
   Console.WriteLine(method.Invoke(null, null));
  }
  Console.Read();
 }

 static string GenerateCode(string lpara, string rparam, string op)
 {
  return "using System; namespace MyNameSpace{ public class MyClass{ public static object MyFunc(){ return "+ lpara + op + rparam +" }}}";
 }
}