C#使用CodeDom动态加载cs文件

public static object Create(string path)
{
    var provOptions = new Dictionary<string, string>();
    provOptions.Add("CompilerVersion", "v3.5");

    CodeDomProvider codeDomProvider = new CSharpCodeProvider(provOptions);
    CompilerParameters compilerParameters = new CompilerParameters();
    compilerParameters.GenerateExecutable = false;
    compilerParameters.GenerateInMemory = true;
    compilerParameters.ReferencedAssemblies.Add("mscorlib.dll");
    compilerParameters.ReferencedAssemblies.Add("System.dll");
    compilerParameters.ReferencedAssemblies.Add("System.Core.dll");
    string[] code = new string[];
    code[] = File.ReadAllText(path);
    CompilerResults compilerResults =
    codeDomProvider.CompileAssemblyFromSource(compilerParameters, code);

    Assembly ass = compilerResults.CompiledAssembly;
    var obj = ass.GetTypes().FirstOrDefault();
    return Activator.CreateInstance(obj);
}

一定要引用mscorlib，否则CodeDom编译出错