I want to be able to persist data across a session but do this outside of the built-in session state object. Why is a long story that I will not go into here. I just need to know where I can put data other than in the session object that will persist across the specific session.
View 3 Replies
I've created a whole bunch of rather complex classes and now i'm starting to work on the ASP.net user interface. Basically the user will open 1 page which will be used to load, edit, save an object. The object has many fields and they are often other classes i've created. To create a nice interface i've used popups and used AJAX to reload parts of the page to avoid reloading the whole thing.
My plan was to create the object and save it to the session. Then each time the page is loaded copy the object values to the asp fields and do the reverse when the page has been submitted copying the asp values to the object field then updating the session object.
So the code will go something like:
onload:
if session is not null load from session otherwise create new
this.txtID.text = object.id
this.txtName.text = object.name
etc etc
on submit:
object.id = this.txtID.text
object.name = this.txtName.text
etc etc
update session.
Is this what you guys would do? or am i over thinking this, seems like a lot of code to load all the object fields each time the page is opened and submitted etc.
Just looking to bounce ideas of off other developers :D
We have used Session heavily in our application, we have created core classes (which have many properties) and store objects of core class in the session.
1) What could be the best solution for reflector activity?
2) What could be the best way to manage session in an application which has 100 pages?
I have a problem to manage session variable in to different virtual directory. I need to access Session value from one virtual directory to another virtual directory. For Example I have a Web Site in my IIS with one page. Page 1
[Code]....
I have another virtual directory under the same Web Site with one page as follows.
Page 2
[Code]....
I can't access session value of Page 1 from Page2!I need to access Page 1 Session value from Page 2.
I am working on a website and this is my first web project. Scenario for Session I have created a database for my project with security level little bit high. I want to manage session for each and every user who is logging in to my website. Session state can be used using Cookie as well as URL, only one at a time. Now I went over with all four session state modes. i.e 1. InProc 2. State Server 3. Sql Server 4. Custom
Now after reviewing from all these modes I am in confusion which one should I use Sql Server or Custom. Basically i want to store session related information in my own database instead of Aspnet_db which is a default database provided by microsoft. I have created all tables related to login and registration. But I dont know how to store session into my database. What tables do I need to create so as to maintain into database. I want to create a complete log of session and login related information into my database(Persistant atleast for 1 year). I want to use machinekey as AES and SHA1.
<sessionState mode="Custom" cookieless="AutoDetect" timeout="15" regenerateExpiredSessionId="true" stateNetworkTimeout="10" >
</sessionState>
<machineKey decryption="AES"
validation="SHA1"
decryptionKey="7E047D50A7E430181CCAF7E0D1771330D15D8A58AEDB8A1158F97EEF59BEB45D"
validationKey="68B439A210151231F3DBB3F3985E220CFEFC0662196B301B84105807E3AD27B6475DFC8BB546EC69421F38C1204ACFF7914188B5003C1DCF3E903E01A03C8578"/>
<add name="conString" connectionString="Data Source=192.168.1.5; Initial Catalog=dbName; Integrated Security=True;" providerName="System.Data.SqlClient" />
What all things do i need to specify in webconfig? My Data Source= 192.168.1.5 Database name= db.mdf What I need to know about. What tables do i need to add to my database to store session related information. eg. Session id (Any other field is also stored or not), Session Time, Session Start Time, Session End Time, Session Expire Time. I dont know what all things are usually taken. Do I need to encrypt Session Id
before storing into database. If Yes Encryption will be automatic or do i need to write some code to do this other than that I wrote in web config above. How mode='custom' will be used into web config using my database. in following code
<sessionState mode="Custom" cookieless="AutoDetect" timeout="15" regenerateExpiredSessionId="true" stateNetworkTimeout="10" >
</sessionState>
[Code]....
View 3 Replies On my local machine I've got a website running which uses the login control to authenticate a user and write a formsauthentication ticket to the client (which is also on the same local machine). At the login process it stores a a small serializable userobject in a session object named Session["appuser"]. Now when I open FF and login to the website all is fine so far... But here's the thing I cannot for the life of me figure out...
When I open IE8 and login to the same website, the session object which was created in FF is completely overwritten with the one created in IE. I thought that every session is unique, but now I'm really starting to feel my knowledge of sessions is almost next to nothing... Is there anyone out there that could tell me why I'm seeing this.
how I can know if a session object was never instantiated?
View 1 RepliesI have a object of Class named "Employee" I need to store the object in the session. what happens if i do not serialize the object and store in the session.
View 7 RepliesI have a Authorizeclient.aspx.cs page where I set my session value.Authorizeclient.aspx is a blank page. HttpContext.Current.Session["nodeID"]="0". This session value changes from 0 or non zero which depends on the value returned by Database. If no value is returned I assign HttpContext.Current.Session["nodeID"]="0" as the default state else I assign HttpContext.Current.Session["nodeID"]=resolve(nodeID).ToString()
Till this part it works fine as expected. However, I have a requirement that I need to read the nodeID from Session in other application on the same server. I mean this application too is part of the root project where I initially created the Session and set it. The strange thing is the Session["nodeID"] in application gets null "SOMETIMES" Not always. I am trying to read the Session in Page_Load. Sometimes it works fine and sometimes it gets null. Moreover the session object do not die and I can see other keys like Session["Themes"] etc there. The session is in InProc mode and have 20 minutes timeout time.
I am stuck with the issue of concurrent access to Session object. Actually my problem is i m writing to session in frame1 and trying to access that same Session object at the same time in Frame2's Page. I know about the reader/writer lock. I made the enablesessionstate = readonly in the page where i m writing to session. its giving me strange behavior on IE and firefox.
Its working concurrently in IE8 ( means page2 is diplaying modified values while page1 is changing the session object) but does not work in Firefox even page load is not called untill function on page 1 completed. Either anyone can fix my issue with firefox or there is new solution to reader/writer lock so that i can read the session at the same time while writing.
I have a asp.net application where I am saving off into session the user privilege information. From a grid I am bring up a new window by using the window.open. It seems that it is whiping out the values in session. A temporary bandaid I have placed on it is to recall the database if the value is nothing to reset the user object. I have found all over the internet that this is an issue with the window.open in IE 7 and IE 8. Has anyone else run into this and able to actually fix it?
View 4 RepliesSystem.InvalidCastException was unhandled by user code
Message=Specified cast is not valid.
Source=App_Web_donate.aspx.cdcab7d2.wqdohvu3
StackTrace:
at Donate.LoadUserDetails() in C:UsersSimonDesktopLocal SitesCats ProtectionNewDonate.aspx.vb:line 261
at Donate.btnDonate30_Click(Object sender, EventArgs e) in C:UsersSimonDesktopLocal SitesCats ProtectionNewDonate.aspx.vb:line 205
at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:
I have made the important bits Bold I have the following code which is generating this error:
[Code]....
I am not entirely sure what is causing it. Its completley intermitent. I am storing all the details of a user filling in a form in a structure, and then assigning that structure to a session variable. This means if they page back, and then page forward again, I can pre-populate the form with the details they have already filled in for their conveinience by using the above code snippet. It appears that it works for a good minute, but if I leave the browser alone any longer than roughly 60 seconds, and then try and page forward to the form again, the exception will fire. While writing this post, the exception has occured in again in firefox, but interestingly, Google Chrome doesn't seem to have this problem. It looks like I can leave chrome alone for as long as I want and it will still work.
I have a Session object
Session["MyListObjects"] = null;
When a user hits a button I want to creat a List<string> object and add to session object.
Let's say if user hits the button 10 times, I would get 10 List<string> objects and
add to Session["MyListObjects"] and
Finally I want to read all the List<string> objects from the session object.
my solution currently has a website project and a class library project. I am attempting to access a session object from my class library but it is always returning null. In a settings class in my class library I store these values like so:
private static SessionProperty<WebUser> _currentUser = new SessionProperty<WebUser>("CurrentUser", delegate { return new WebUser(); });
public static WebUser CurrentUser
{
get { return _currentUser.Value; }
set { _currentUser.Value = value; }
}
I can access this just fine from any aspx page codebehind like so:
Settings.CurrentUser.User.ProviderUserKey.ToString();
However, if I attempt to do the same thing from a class in my classlibrary project it always returns null.
I test my asp.net website app in my win 2000 server in Administrator user mode, the session I start (Session("user_ses") = myclass) only lasts a few seconds. But if I do the same as a 'common' user the session lasts 20 minutes, which is the time I set in web.config file:
<sessionState mode="InProc" cookieless="false" timeout="20" />
which is the reason the session lasts so little in Administrator user mode in windows 2000 server?
The a way to save an object in session with expiry time , such as when you're saving object in cache.
View 12 RepliesI am trying to pass a key value from one page to another, using VB.net and Visual Studio 2008 Professional. I am creating a session variable in one aspx page and trying to retrive the value in the second aspx page (Dircted to by a button with the postbackurl set) However, the session object is empty when I try to access it in the second page. If, however, i put a debug hold on the code which retrieves the variable, and examine the session object from the "locals" debug window, i see contents. When I then resume the application the code retrieves the value correctly. I am executing my code using the development server that comes with Visual Studio. Could it have something to do with that?
First Page:
[Code]....
Second Page:
[Code]....
While working with mutliple tabs of same browser, session varibles/object gets over written with latest one.
Scenario in my application:
I have to create new employee on first tab(tab #1), and updating existing employee details on second tab(tab #2).I stored employee other details in Session["dtInfo"], use it on saving the record.Now Session["dtInfo"] having details of latest tab created, i.e. tab #2. I tried to save record on tab #1, facing the problem of session gets over written.I had to check some vaules on OnInit and OnInitComplete event. But I get here wrong values in session.
I noticed that when i am debugging my web application in Visual Studio 2005 using IIS, after about 10-15 minutes of inactivity, when I do something in the application such as a postback, I get an immediate error saying: "object reference not set to an instance" and my code breaks somewhere.Is my assumption correct that this is because my session has timed out? ( i do have a 15 minute default session time)my next question is, how do I display or set a way so that like many other pages, when the session has expired, a message will say: "This page must be refreshed" or "Your session has expired, click okay to refresh page" and start over again?
View 1 RepliesIve created an object and placed it in the session, then in my .ashx handler I want to get that object from the session. The problem is that its always null !
heres how ive placed the object into the session from an aspx page
[Code]....
I read the solutioin for this error, at the following link :http://forums.asp.net/p/1046935/1576341.aspxbut I am still not clear what exactly causes the error. I have two doubts :1. Can anyone please elaborate a bit on this issue, with any example ????2. Is there any drawback of this approach ?
View 4 Repliesi'm having a gridview with textboxes and i'm allowing user to enter all the textboxes and when submit button is clicked, I'm constructing the Object and adding all the rows to LIST class.,After that i'm putting that LIST elements in a session. Everything is fine, But when i try to cast the session object to LIST type and pass it to XML serialization, I cannot see the elements in the list and it is showing LIST as NULL. I can see the generated XML string with ROOT and my classname as attributes without no data.
Here is the below code:
[Code]....
I have a multiview inside an updatepanel. in one of the views, I save a value in a session object like this:
Session["xyz"] = "some string value";
Then I switch to another view and try to pick it up the value in a button's OnClick event:
string x = Session["xyz"].ToString();
But I get a null reference error. Debugging it shows that Session["xyz"] is indeed null, yet other Session variables are still there. Is there something special about Session and AJAX?
I added the following code to global.asax to load up several session variable when a session starts. I'm assuming that when a page goes to use the variable that I should be
1) checking at the page level that the value is valid not 0 when its not expected to be 0, not a zero-length string when its expected to have a length
2) have code at the page level that sets the values if the values have not been set as when the Session timeout, ideally putting the code in a class derived from Page and then deriving all of my pages from the new class so that the code does not have to be repeated in every page
[Code]....
