“ExamStudnet”并不包含“”的定义

Question

“c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\examsystem\d30c24e0\7e111a92\App_Web_axpussag.3.cs”中的类型“ExamStudent”与“c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\examsystem\d30c24e0\7e111a92\App_Code.o3kavomu.dll”中的导入类型“ExamStudent”冲突。将使用“c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\examsystem\d30c24e0\7e111a92\App_Web_axpussag.3.cs”中的类型。D:\ASP.NET_TEST\ExamSystem\Exam.aspx.cs D:\ASP.NET_TEST\ExamSystem\之前调用ExamStudent类都正常，不知道怎么的，就有了上面那个警告，接着就出现了ExamStudent这个类并不包含对其所有包含的的属性和方法的定义，不知道怎么回事，请各位帮忙！！！万分感激！！！以下是ExamStudent那个类！using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data .SqlClient;
using System.Text;
/// <summary>
/// ExamStatus 的摘要说明
/// </summary>
 public class ExamStatus
{
    #region property
    private string studentID=null;    public string StudentID
    {
      get { return studentID; }
      set { studentID = value; }
    }
    private int examID=0;    public int ExamID
    {
    get { return examID; }
    set { examID = value; }
    }
    private DateTime lastupdate=DateTime.Now;    public DateTime Lastupdate
    {
    get { return lastupdate; }
    set { lastupdate = value; }
    }
    private DateTime examStart=DateTime .Now;    public DateTime ExamStart
    {
    get { return examStart; }
    set { examStart = value; }
    }
    private int curPage=1;    public int CurPage
    {
    get { return curPage; }
    set { curPage = value; }
    }
    private int showAnswer=0;    public int ShowAnswer
    {
    get { return showAnswer; }
    set { showAnswer = value; }
    }
    private int submitted=0;    public int Submitted
    {
    get { return submitted; }
    set { submitted = value; }
    }
    private int submittedPage=0;    public int SubmittedPage
    {
    get { return submittedPage; }
    set { submittedPage = value; }
    }
    private bool exisited = false;    public bool Exisited
    {
        get { return exisited; }
        set { exisited = value; }
    }    #endregion    public ExamStatus()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //    }    #region CRUD
    SqlConnection conn = DB.conn();
    public void Create()
    {
        SqlCommand cmd = new SqlCommand ();
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("insert into Exam_Status values('{0}',{1},'{2}','{3}',{4},{5},{6},{7})", studentID, examID, lastupdate, examStart, curPage, showAnswer, submitted, submittedPage);
        cmd.CommandText = sb.ToString();
        cmd.Connection = conn;
        if (conn.State == ConnectionState.Closed)
            conn.Open();
        cmd.ExecuteNonQuery();
        if (conn.State == ConnectionState.Open)
            conn.Close();        
    }    public void Read()
    {
        SqlCommand cmd = new SqlCommand();
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("select * from [Exam_Status] where StudentID ='{0}' and ExamID={1}", studentID,examID);
        cmd.CommandText = sb.ToString();
        cmd.Connection = conn;
        if(conn.State==ConnectionState.Closed)
            conn.Open();
        SqlDataReader sdr = cmd.ExecuteReader();
        if (sdr.Read())
        {
            curPage = Convert.ToInt32(sdr["CurPage"]);
            showAnswer = Convert.ToInt32(sdr["ShowAnswer"]);
            submitted = Convert.ToInt32(sdr["Submitted"]);
            examID = Convert.ToInt32(sdr["ExamID"]);
            submittedPage = Convert.ToInt32(sdr["SubmittedPage"]);
            exisited = true;
        }
        sdr.Close();
        if(conn.State==ConnectionState.Open)
            conn.Close();
      }    public void Update()
    {
        StringBuilder upsql = new StringBuilder();
        upsql.AppendFormat("update [Exam_Status] set LastUpdate='{0}',CurPage={1},ShowAnswer={2},Submitted={3},SubmittedPage={4}",DateTime.Now,curPage,showAnswer,submitted,submittedPage);
        SqlCommand cmd = new SqlCommand(upsql.ToString(),conn);
        if(conn.State==ConnectionState.Closed)
            conn.Open();
        cmd.ExecuteNonQuery();
        if(conn.State==ConnectionState.Open)
            conn.Close();
     }    public void Delete()
    {
        SqlCommand cmd = new SqlCommand();
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("delete Exam_Status where StudentID ='{0}'", studentID);
        cmd.CommandText = sb.ToString();
        cmd.Connection = conn;
        if (conn.State == ConnectionState.Closed)
            conn.Open();
        cmd.ExecuteNonQuery();
        if (conn.State == ConnectionState.Open)
            conn.Close();  
    }        
    #endregion
}

Answer 1

c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files东西删除一下
你的后台代码的dll文件有了两个...这个类型

Answer 2

删一下这个文件夹中的东西
c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\examsystem