“求各位大神帮帮忙修改下 下面的代码”
c#+.net做一个课程设计 考试页面实现加载三道题 点击提交后并自动的判断 得出分数我自己做的这个在线考试页面无法正确记录考题数量，加载考题的时候也无法正确加载三道题 i的值总是超出 求各位大神帮帮忙
在线考试页面
public partial class student_startexam : System.Web.UI.Page{
public string rightans = null;
//存储正确答案
public static int tnum;
//记录考题数量
protected void Page_Load(object sender, EventArgs e)
{
lastunum.Text = Session["studentnum"].ToString();
lastuname.Text = Session["stuname"].ToString();
lastusex.Text = Session["stusex"].ToString();
exkm.Text = Session["KM"].ToString();
Label1.Text = "考试时间为10分钟，每小题2分，考试已用时：";
SqlConnection con = BaseClass.DBcon();
con.Open();
int i = 1;
SqlCommand cmd = new SqlCommand("select top 3* from Test where testCourse='"+Session["KM"].ToString()+"' order by newid()",con);
SqlDataReader sdr = cmd.ExecuteReader();
while (sdr.Read())
{
Literal littxt = new Literal();
Literal litti = new Literal();
RadioButtonList cbk = new RadioButtonList();
cbk.ID = "cbk" + i.ToString();
//显示标题
littxt.Text = i.ToString() + "、"+Server.HtmlEncode(sdr["testContent"].ToString())+ "";
litti.Text = ""; cbk.Items.Add("A."+Server.HtmlEncode(sdr["testAns1"].ToString())); cbk.Items.Add("B." + Server.HtmlEncode(sdr["testAns2"].ToString())); cbk.Items.Add("C." + Server.HtmlEncode(sdr["testAns3"].ToString())); cbk.Items.Add("D." + Server.HtmlEncode(sdr["testAns4"].ToString()));
cbk.Font.Size = 11;
string id = cbk.ID;
for (int j = 1; j <= 4; j++)
{
string value=cbk.Items[j - 1].ToString().Substring(2);
cbk.Items[j - 1].Value = j.ToString();
}
rightans += sdr[5].ToString();//正确答案
Session["rightans"] = rightans;
Panel1.Controls.Add(littxt);
Panel1.Controls.Add(cbk);
Panel1.Controls.Add(litti);
i++;
}
tnum++;
sdr.Close(); con.Close();
}
protected void btnsu_Click(object sender, EventArgs e)
{
SqlConnection con = BaseClass.DBcon();
con.Open();
string msc = "";
for (int i = 1; i <tnum; i++)
// for (int i = 1; i <=1; i++)
{
RadioButtonList list = (RadioButtonList)Panel1.FindControl("cbk"+i.ToString()) as RadioButtonList;
if (list != null)
{
if (list.SelectedValue.ToString() != "")
{
//msc += list.SelectedValue.Substring(2,list.SelectedValue.Length-2).ToString();//存储考生答案
// msc += list.SelectedValue.Trim().ToString();
//msc += list.Text.Trim();
// msc += list.SelectedItem.Text.ToString();
msc += list.SelectedItem.Text.Substring(2, list.SelectedItem.Text.Length - 2).ToString();
}
else msc += "0";
}
}
Session["sans"] = msc;
con.Close();
Response.Redirect("result.aspx?BInt="+tnum.ToString());
// Response.Redirect("result.aspx");
}
}
自动评分页面
public partial class student_result : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SqlConnection con = BaseClass.DBcon();
con.Open();
string Rans = Session["rightans"].ToString();
int j = Convert.ToInt32(Request.QueryString["BInt"]);
string Sans = Session["sans"].ToString();
//int Sans_index = Sans.IndexOf(",");
int stuscore = 0;
for (int i = 0; i < j;i++ )
// for (int i = 0; i < 1;i++ )
{
if (Rans.Substring(i,1).Equals(Sans.Substring(i, 1)))
// if (Rans.ToString() == Sans.ToString())
//string s = Sans.Substring(i, Sans_index);
//if (1 == Rans.IndexOf(s))
{
stuscore += 2;
SqlCommand cmd = new SqlCommand("update Score set score='" + stuscore + "' where StudentID='" + Session["studentnum"].ToString() + "'and LessonName='" + Session["KM"].ToString() + "'");
cmd.Connection = con;
//cmd.ExecuteNonQuery();
con.Close();
//Rans = Rans.Substring(Sans_index + 1);
//Sans_index = Rans.IndexOf(",");
}
else
{
}
}
this.lblresult.Text = stuscore.ToString();
this.lblkm.Text = Session["KM"].ToString();
this.lblnum.Text = Session["studentnum"].ToString();
this.lblname.Text = Session["stuname"].ToString();
lbldate.Text = DateTime.Now.ToLongTimeString();
Label10.Text = DateTime.Now.ToLongDateString();
}
}
