类库的编译问题

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace Model

{

    public class UserInfo

    {

        public virtual int ID { get; set; }

        public virtual string UserID { get; set; }

        public virtual string UserName { get; set; }

    }

}

using Microsoft.CSharp;

using System.CodeDom.Compiler;

using System.IO;



CSharpCodeProvider objCSharpCodePrivoder=new CSharpCodeProvider();

CompilerParameters paras = new CompilerParameters();

paras.GenerateExecutable = false;   //编译成exe还是dll

//paras.ReferencedAssemblies.Add("System.dll");

paras.GenerateInMemory = false;   //是否写入内存,不写入内存就写入磁盘

paras.OutputAssembly = "C:\\UserInfo.dll";  //输出路径

StreamReader sr = new StreamReader(@"C:\UserInfo.cs");

String txtStr = sr.ReadToEnd();



CompilerResults result = objCSharpCodePrivoder.CompileAssemblyFromSource(paras, txtStr);