asp.net website anti-malicious refreshing cookies and Session solution _ practical Tips

This article is an example of the ASP.net Web site to prevent malicious refreshing cookies and session solution, is a web design very practical skills. Share to everyone for your reference. The implementation methods are as follows:

Session Version Implementation method:

public double time;  public const int freetime = 1;//Brush freeze interval, currently 1 seconds #region anti-malicious refresh if (Session.SessionID = null) {Response.End ();} else if
(session["Sionid"] = = null)
{session["Sionid"] = Session.SessionID;}
  if (session["last"] = = null) {session[' last '] = DateTime.Now;} else {DateTime thistime = DateTime.Now; DateTime lasttime = DateTime.Parse (session["last").

  ToString ()); if (Session.SessionID = = session["Sionid").
  ToString ()) session["last"] = thistime;

  TimeSpan ts = thistime-lasttime; Time = ts.
  TotalMilliseconds;
  if (Time < FreeTime *) {warm_prompt (); #endregion public void Warm_prompt () {Response.Write ("<table width= ' 778 ' border= ' 0 ' align= ' center ' Cellpaddin g= ' 3 ' cellspacing= ' 2 ' bgcolor= ' #009900 ' style= ' font-size:14px;
    ' > ');
    Response.Write ("<tr bgcolor= ' #FFFFFF ' >");
    Response.Write ("<td></td>"); Response.Write ("<td bgcolor= ' #EEFFEE ' to ensure your access security, please" +FreeTime + "seconds after <a href= '" + Request.rawurl + "' target= ' _self ' style= ' color: #FF0000; '
    > Click here to refresh </a> this page </td> ");
    Response.Write ("</tr>");
    Response.Write ("</table>");
Response.End ();

 }

Cookie Implementation method:

public double time;

public const int freetime = 2;
#region anti-malicious refresh of the string page;
if (request.cookies["page" = = null) {page = "";} else {page = httpcontext.current.request.cookies["page"]. Value.tostring (); Gets the URL value stored in the cookie} string strthispage = HttpContext.Current.Request.Url.PathAndQuery.ToString ();//Get current page address DateTime
Lasttime = DateTime.Now; if (page. Equals (Strthispage))//If the value in the cookie is equal to the current page, the expression is the refresh operation {TimeSpan ts = lasttime-datetime.parse ( httpcontext.current.request.cookies["Time"].

  Value.tostring ()); Time = ts.
  Seconds;
  if (Time < FreeTime) {warm_prompt (); } else {//Execute Action response.cookies["page"].
  Value = Strthispage; response.cookies["Time"].
Value = Lasttime.tostring (); #endregion public void Warm_prompt () {Response.Write ("<table width= ' 778 ' border= ' 0 ' align= ' center ' cellpadding= ' 3 ' cellspacing= ' 2 ' bgcolor= ' #009900 ' style= ' font-size:14px;
    ' > ');
    Response.Write ("<tr bgcolor= ' #FFFFFF ' >"); Response.Write ("<td>< IMG src= '/newimages/logos.gif ' ></td> '); Response.Write ("<td bgcolor= ' #EEFFEE ') to ensure your Access security, the page will automatically jump to the content you want to visit in 2 seconds!
    </td> ");
    Response.Write ("</tr>");
    Response.Write ("</table>"); Response.Write ("<meta http-equiv=\" refresh\) content=\ "2\"; Url= "+ httpcontext.current.request.cookies[" page "].
    Value.tostring () + ">");
Response.End ();

 }

It is believed that this article has certain reference value to the ASP.net program design of our people.