In ASP.NET should we call Session.Abandon() when an unhandled exception occurs?There are many end users that hit "refresh" or "back" in the web browser in order to resubmit the request.I would like to prevent this behavior by resetting the context.TIA.
View 2 RepliesI'm writing some logging code that is based on SessionID. However, when I log out (calling Session.Abandon), and log in once again, SessionID is still the same. Basically every browser on my PC has it's own session id "attached", and it won't change for some reason. My Session config looks like this:
<sessionState
mode="InProc"
timeout="1" />
from the web .config file i want to redirect to a login page when will exception or session expaires occurs so how to do that one?
View 3 RepliesI am trying to call web reference "A" in an application.
The web reference "A" will then call a function in another web reference "B" through HTTPS connection (require certificate).
Then I keep getting the following error:
An unhandled exception of type 'System.Web.Services.Protocols.SoapException' occurred in System.Web.Services.dll
I am working on a 3-tier asp.net application. Currently I'm stuck up in a situation where I need to handle a specific type of exception (User Defined) in DAL and Show alert to the user if that exception occurs in DAL.
I tried following things:
1) I raised that exception from the DAL and catch it in BLL and throw a new BLL exception to for that DAL exception and finally catch it in the UI layer to show the alert to the user. I've successfully implement this in my project. But there are some issues in this approach. First of all I feel this is not right way to do this as it may lead to performance related issues. Secondly, the application contains more than 500 pages and classes. so I need to attach additional catch block in every method to catch the BLL exception. which is the last option i'd like to take.
2) in second approach I logged the the DAL exception into a text file. but problem in this approach is that how could the UI layer know that exception has occurred and show the alert to the user. Is there any event in asp.net where i could handle all this activities?
my question is what is the best approach to handle this type of situation? Will Exception handling block help me in this?
I've tried reading many articles on this but i couldn't get an answer for my question? I might not be using right keywords for my search.
What is the difference between Session.Abandon() and Session.Clear() in ASP.Net?
View 1 RepliesTo avoid session fixation/hijacking we are heeding the common advice to create a new ASP.Net session for a user after authentication. Sounds simple enough. When a user authenticates we call Session.Abandon() the session ID cookie Response.Cookies.Add(new HttpCookie("ASP.NET_SessionId", "") then redirect the user.
However, how do we know on the new page that the user has logged in? We cannot check a session variable because there are none, we just started a brand new session.
I would swear, though I cannot find it now, that on this site someone explained how you can abandon a session and then get the next subsequent session ID. This way you could store that information. Then on the "Start Page" a new session would begin and that page could look up the old Session based on the new ID and validate that a user logged in.
So, are there any masters of the ASP.Net Session classes that know how to do this?
on click of logout button, i want to call a web service method that will get that particular user's session and call its abandon method. But how can i pass that session variable to that web method ?
Calling of web method is done through java script.
Session.Abandon() in not working ASP.NET 2.0 (C#) in a few cases. In the same application its working fine in other places.
< sessionState
mode="StateServer"
cookieless="false"
timeout="20" />
The session mode is "SateServer".
I have just added the following to the very last page of my application.
[Code]....
And then i have this on each of the pages before the last, within my Page_load:
[Code]....
I have different sessions thruout the application process, but this one session is only set at the beginning of the process and once i kill it on the last page, any attempt to hit Back or trying to access any page directly without first starting, i need to force them to the beginning, what am i missing or doing wrong?
sessID is set on page 1 and is available until you get to the last page. Where i added the Session.Abandon(); Now if i get to the last page and hit back before the refresh occurs, im able to go back, but the page comes up with null reference for other sessions that are obvisously cleared / killed with the abandon. So i should have to check for each session should i? I mean if the abandon killed them all, then checking for the main session should be enough right?
How to get rid of Session.sessionID when abandoning the session?
Scenario : I abandon a session and create a new session again. This time the sessionID generated remains the same as earlier.
In my ASP.NET application I need to allow only one session for a user ? When a user does login more than once, I want to get to user's previous session and abandon it. I'm keeping track of all user sessions by means of session id. But Session.Abandon is available only for the current session associated with a request and not previous sessions. I have the session id of the user's previous session but how can I end it ?
View 3 Repliesi allow my admin to login from his login page and login information verified and stored into an session after that, he visited into an client page, there is an logout button this will visible whether session has the user id or admin user id else it'll be invisible.
now the scenario is:
1. admin logged into admin page
2. then in the address bar type the client page name
3. now the client page is check whether has the userid or admin user id in Session, now the session has admin user id so, its show the Logout button.
4. from this client page, the admin clicks on Logout button, here i have Abandon the session and moved into the admin login page.5. now again admin types the same client page name in the address bar from his login page(but now he didnt logged in).6. this time i set the break point on client page_load event but its not hitting the event also its visible the Logout button also.so, how its not hitting the page_load event and why the logout button is visible after loggedout.
How do I abandon the session when the user closes the browser window instead of pressing the logout button in ASP.Net 3.5 application.
View 5 RepliesI'm getting an unhandled exception when using a PasswordRecovery control to reset a password and I can't find where the error is coming from or what it means. The PasswordRecovery control is hooked in to a custom MembershipProvider, which uses a custom MembershipUser class. Code: The replacements dictionary must contain only strings. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: The replacements dictionary must contain only strings.
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[ArgumentException: The replacements dictionary must contain only strings.]
System.Web.UI.WebControls.MailDefinition.CreateMailMessage(String recipients, IDictionary replacements, String body, Control owner) +1366
System.Web.UI.WebControls.MailDefinition.CreateMailMessage(String recipients, IDictionary replacements, Control owner) +290
System.Web.UI.WebControls.LoginUtil.CreateMailMessage(String email, String userName, String password, MailDefinition mailDefinition, String defaultBody, Control owner) +180
System.Web.UI.WebControls.LoginUtil.SendPasswordMail(String email, String userName, String password, MailDefinition mailDefinition, String defaultSubject, String defaultBody, OnSendingMailDelegate onSendingMailDelegate, OnSendMailErrorDelegate onSendMailErrorDelegate, Control owner) +367
System.Web.UI.WebControls.PasswordRecovery.AttemptSendPasswordUserNameView() +537
System.Web.UI.WebControls.PasswordRecovery.AttemptSendPassword() +55
System.Web.UI.WebControls.PasswordRecovery.OnBubbleEvent(Object source, EventArgs e) +103
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +118
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +166
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565
My company has an application that handles shopping cart check out processes.The application is written in VB.net with the .NET 2.0 Framework.We are running IIS 6.0 as the web server and have,what we consider,excellent exception handling.For those exceptions that we can't figure out why they're happening,we use Elmah to handle them,package them up,and email them to us.We still see a fair amount of unhandled exceptions,handled by Elmah.
My question is:This is an application that is used by many people on the web at the same time.If there is an unhandled exception (handled by Elmah, mind you),does this then reset the application so that all users who aren't doing anything naughty see the application blow up in front of them when this happens?
In my application I am accessing my DB using simple stored procedure..but My code got exception....while I debug the code I have seen that the code is executed successfully and while the whole try block has been executed then the code call the exception but more ridiculously without any kind of error..here is my code
[Code]....
one of the sites hosted on our server is giving this error in event viewer
Event Type: Warning
Event Source: ASP.NET 2.0.50727.0
Event Category: Web Event
Event ID: 1309
Date: 24/06/2008
Time: 17:28:40
User: N/A
Computer:
Description:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 24/06/2008 17:28:40
Event time (UTC): 24/06/2008 16:28:40
Event ID: 7addcd74d55746d3b73bf9905eb3edeb
Event sequence: 17
Event occurrence: 6
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/586182382/Root-1-128587971859459234
Trust level: Full
Application Virtual Path: /
Application Path: C:Inetpubconvex_crm
Machine name:
Process information:
Process ID: 6956
Process name: w3wp.exe
Account name: NT AUTHORITYNETWORK SERVICE
Exception information:
Exception type: InvalidOperationException
Exception message: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.
Request information:
Request URL:
Request path: /Default.aspx
User host address: 192.168.23.52
User:
Is authenticated: False
Authentication Type:
Thread account name: NT AUTHORITYNETWORK SERVICE
Thread information:
Thread ID: 1
Thread account name: NT AUTHORITYNETWORK SERVICE
Is impersonating: False
Stack trace: at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at Utils.GetOne(String query) in c:Inetpubconvex_crmApp_CodeUtils.cs:line 24
at Settings.GetSettings(String keyname) in c:Inetpubconvex_crmApp_CodeSettings.cs:line 17
at _Default.Page_Load(Object sender, EventArgs e) in c:Inetpubconvex_crmDefault.aspx.cs:line 19
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Custom event details: For more information, see Help and Support Center at [URL] the site was developed in ASP.NET 2.0 what might be the problem how to resolve it??
I am using ajax rating control, but i get the following error on change of rating , the funnest part is i get this error for every alternate submission, 1st time i click on rating stars it happen without error but 2nd time i do the same then error throws, for 3rd time no error , for 4th time again error and it continues "An unhandled exception has occured:
The target 'ctl00$ContentPlaceHolder1$dList$ctl00$Rating1' for the callback could not be found or did not implement ICallbackEventHandler." hope i get an ans for this funny kind of issue.
I have written an application that relies upon PageMethods. It was working fine in .NET 3.5 where I would rely upon exceptions to signify something failing during the call. I would then alert the user to what ever it was that happened. All was working great. I transitioned to .NET 4.0 as I am intrigued by the Parallel Computing improvements. Now any exception that I throw in the PageMethod in the code behind is met with an Unhandled Exception. Nothing has changed other than the target framework.
View 5 RepliesI need values for 6 years that's 72months
if (i <= 72)
{
values[i] += C158_Calc;
}
B162_Calc = Financial.IRR(ref values, 0.1) * 12;
row9["Month1"] = String.Format("{0:#,###,###,###.##}", B162_Calc);
Description: An unhandled exception occurred during the execution of the current web request.
I'm working on having two forms that communicate together. In order to do this, I am passing public value from the source page. Here's how I did it:
In the source page I have:
Public ReadOnly Property CurrentCity() As String
Get
Return txtboxfake.Text
End Get
End Property
Then under page_load of the page I have:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
txtteam.Text = PreviousPage.CurrentCity
txtboxdate.Text = Calendar1.SelectedDate
End Sub
For some reason I keep getting an error that says "NullReference exception unhandled by user code" that points to txtteam.text = PreviousPage.CurrentCity.
I have a ASP.NET website that is using an access database. In the website on the pages where the data is fetched from the database sometimes it gives the below error. When I delete the .ldb file the website starts working.
Server Error in '/' Application.
Unspecified error
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.OleDb.OleDbException: Unspecified error
This is actually a problem with a local report (RDLC) as opposed to an SQL report but this seemed to be the closest forum. I'm simply trying to have my page programatically open my report in PDF format. Ideally the preview wouldn't have to load at all but the way of doing it in pure code without loading a page with a ReportViewer control seems complicated to me, especially as the report has several subforms, all with different datasources (from an SQL server database).
So I'll settle for a page with a ReportViewer control which automatically opens the report in PDF when the page loads. I can't believe how much code is required for this! There are lots of tutorials on the Internet for this and I've tried several but without success. It seems to always fail at the same line, when adding values to the byte array.
[Code]....
Suddenly I got this message:
unhandled exception has occurred. unknown server tag 'asp:ListView'
What can be wrong with the project?