这些代码什么意思，请麻烦解释一下？小弟初学．ＮＥＴ
if (IsPostBack)
void Page_Load(Object Src, EventArgs E)
OleDbCommand Comm = new OleDbCommand(SQL,Conn);
dr = Comm.ExecuteReader();
<%
int Score = 0;
while (dr.Read()) {
if (Request["No" + dr["题号"].ToString()] != null) {
string Sel = Request["No" + dr["题号"].ToString()];
string Ans = dr["解答"].ToString();
//Response.Write(Sel + Ans + "<br>");
if (Ans == Sel)
{
Score = Score + Convert.ToInt32(dr["分数"].ToString());
//Response.Write( "OK" + Score);
}
}
}
