asp.net网络考试系统分析
/Files/izxp/kaoshi.rar
<% @ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OleDb" %>
<Script runat="server">
void Page_Load(Object Src, EventArgs E) {
string No = "";
string Name = "";
string Lesson = "";
string Msg = "";
if (IsPostBack) {//页面被提交的时候执行
No = Request["txtNo"];
Name = Request["txtName"];
Lesson = Request["Lesson"];
string SQL = "Select * From 成绩单 ";
SQL = SQL + "Where 学号=" + "'" + No + "'" + " And 姓名='" + Name + "'";
//string SQL = "Select * From 成绩单 where 学号='"+No+"' and 姓名='"+Name+"' ";
OleDbConnection Conn;
Conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;"+
"Data Source="+Server.MapPath("test.mdb"));
Conn.Open();
//Response.Write(SQL);
OleDbCommand Comm=new OleDbCommand(SQL,Conn);
OleDbDataReader dr=Comm.ExecuteReader();
if (dr.Read()) {
if (dr[Lesson].ToString() != "-1") {
Msg = "你已经考过本科目了!";
}
else{
Conn.Close();
Response.Redirect("TEST.ASPX?Lesson="+Lesson+"&Name="+Name+"&No="+No);
//Response.Redirect("TEST.ASPX?Lesson="+Lesson+"&Name="+Name+"&No="+No+"");
}
}
else{
Msg = "你不是合法考生!";
}
Message.Text = Msg;
Conn.Close();
}
}
</Script>
<HTML>
<BODY BGCOLOR=BEIGE>
<H1 ALIGN="CENTER">在线考试系统</H1>
<HR>
<FORM METHOD="POST" RUNAT="SERVER">
<asp:DropDownList ID="Lesson" RUNAT="server">
<asp:ListItem value="ASP" selected="true">ASP</asp:ListItem>
<asp:ListItem value="XML">XML</asp:ListItem>
</asp:DropDownList>
<P>姓名：<asp:textbox id="txtName" runat="server" /></P>
<P>学号：<asp:textbox id="txtNo" runat="server" /></P>
<P><asp:button text="开始考试" runat="server" /></P>
</FORM> <HR>
<asp:label id="Message" runat="server" />
</BODY>
</HTML>
