📄 login.aspx
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<HTML>
<HEAD>
<title>Cookie应用举例</title>
<script Language="C#" runat="server">
void Page_Load()
{
if(IsPostBack == true)
{
try
{
Hashtable userTable = HashFile.ReadHashtableFromFile(Server.MapPath("user.txt"));
if( (string)userTable[txtUserName.Text] != txtPassword.Text )
{
Label1.Text = "用户名/密码不正确，请重试.";
return;
}
Random rand = new Random();
HttpCookie cookie1 = new HttpCookie("user");
HttpCookie cookie2 = new HttpCookie("id");
cookie1.Value = txtUserName.Text;
cookie1.Expires = DateTime.Now.Add(new TimeSpan(0,0,10,0));
cookie2.Value = rand.Next().ToString();
cookie2.Expires = DateTime.Now.Add(new TimeSpan(0,0,10,0));
Response.Cookies.Add(cookie1);
Response.Cookies.Add(cookie2);
Hashtable loginUser = HashFile.ReadHashtableFromFile(Server.MapPath("login.txt"));
if( loginUser[cookie1.Value] == null)
{
loginUser.Add(cookie1.Value, cookie2.Value);
}
else
{
loginUser[cookie1.Value] = cookie2.Value;
}
HashFile.WriteHashtableToFile(loginUser, Server.MapPath("login.txt"));
Label1.Text = "欢迎" + txtUserName.Text;
txtUserName.Visible = false;
txtPassword.Visible = false;
lblUserName.Visible = false;
lblPassword.Visible = false;
Button1.Visible = false;
HyperLink1.Visible = true;
return;
}
catch(Exception e)
{
Response.Write(e.ToString());
return;
}
}
else
{
Label1.Text = "输入您的用户名与密码";
}
}
</script>
</HEAD>
<body>
<h3>登录页面</h3>
<hr>
<form id="form1" runat="server" method="post">
<asp:Label id="Label1" runat="server" /><br>
<asp:Label id="lblUserName" Runat="server">用户：</asp:Label>
<asp:TextBox id="txtUserName" runat="server" /><br>
<asp:Label id="lblPassword" Runat="server">密码：</asp:Label>
<asp:TextBox id="txtPassword" TextMode="Password" runat="server" /><br>
<asp:HyperLink id="HyperLink1" runat="server" NavigateUrl="Service.aspx" Visible="False">进入服务页面</asp:HyperLink>
<P></P>
<hr>
<asp:Button id="Button1" Text="提交" runat="server" />
</form>
</body>
</HTML>
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