How do I call Page_PreRender? And where is it called from?
Here's the code I want the Page_PreRender event to contain:
DropDownList oddl = (DropDownList)Page.Master.FindControl("ddlSystemsMain");
if (Session["LastSystemUsed"] != null)
{
oddl.SelectedIndex = (int)Session["LastSystemUsed"];
I need to get the calling page url referrer and host name. I works for me if the calling pages are within the same network. When a page is called from an internal site that are outside of my network, I got the following error:
Object reference not set to an instance of an object.
It failed on this line:
string userURL = Request.UrlReferrer.ToString();
i have one method which save datatable in viewstate.i am calling this method in. page_load2. Prerenderthe page was every heavy,i did tracing of page i found due to calling of method from preprnder it doubled the viewstate sizewhat was the reseon behind this.
View 2 Repliesi have button and i want to count how many times in a page load this button clicked? or have a counter in the events but i be able to use that number outside the coding.
View 4 RepliesIn my project Session end event is not getting fire.
How to fire it in global.asax file..
I've exhausted my resources and still have been unable to determine why I'm experiencing this issue:
- I have an ASP/VB Website
- I've added a Global.asax file
- In the Global.asax file, I'm initializing some settings in the Session_Start method
If I use the Built-In VS web server, the Session_Start method is hit and the settings are initialized
If I use an IIS Virtual Directory for the website, the Session_Start method is NOT hit
i have a problem with web application bulit on vs2005,an application work client/server .the application End event fire every 1 hour almost,although there is no changes on web.config or deleting files!
View 8 RepliesI need to have a timer to count down a multiple-paged online quiz. The timer countdown should decrement consecutively on each following page. It is tricky to use javascript to maintain the timer value across multiple pages through sequences of postbacks. So, I have been searching a server-side solution and found this:
http://forums.asp.net/p/1621352/4161304.aspx (see the response by Wenchao Zeng - MSFT, the 4th post in that thread).
I created a small web application to test it out and it works great. But when I put the code into a header user control (Header.ascx) in my quiz application, the Timer control's OnTick event never fires. I put a break point in the first line of Timer1_Click, but the debugger of visual studio never gets there.
I tried this:
[Code]....
The code behind is the same (except maybe UI control names) as the one we see at the thread I referred to above. But Timer1_Click never gets executed (and hence my countdown doesn't get displayed). The CountDownTimer class works just fine because I can see from the debugger that the time value is decreasing like I want.
i 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 invoke an event handler a minute before session timeout.
I found this code.
[Code]....
How to prevent Session.Timeout extension on certain event from codebehind?
What I do - I have Session Timeout configured in Web.config file for 10 minutes. Also, I have in my webpage1.aspx, an ASP.NET AJAX control ModalPopup which shows into the page 9 minutes after the user stopped sending requests to webpage1.aspx. I did this with this code:
[Code]....
[Code]....
So, my initial calculations was that 1 minute before the session ends, i'll inform the user something with the ModalPopup. The problem is that when this Timer1_Tick event triggers, the session.timeout renew ( or extends ) and the session ends 10 minutes later (if user still don't send any request from his browser).
Can I write code in Timer1_Tick event which prevent session extension?
Suppose my website address is like http://localhost/MyWebsite
I wanted to access this url in Application_start event in global.asax, Can i some how get it?
[I know i can get it via application_beginrequest or other event]
How can i capture Application pool recycle event in asp.net c# code so that when recycle event occurs i can make a post back or refresh the page in the code ?. Our Application sessionstate mode is StateServer which helps me in not loosing the session data but still i need to refresh the page at server side only on this particluar event.The reason is at the client side javascript webform_DoCallBack doesnot fire when there is application pool recycle and thus website stops getting updates.we have a timer set to 15 minutes when webform_DoCallBack fires and fecthes updates for the page and displays it.
View 8 RepliesI haveMaster Page -> ASPX page -> User ControlUser control page is contains all dynamic bind controls (e.g Repeater) depended on ASPX Page (Only one parameter say ItemNo)The problem is, if I bound user control on page load event with passing respective parameters then it's create to much view state (I checked source file and it's almost 1.5 MB)In other way if I put one textbox, and a command button and I pass required parameter on button click and load the control then page size is ok (I checked and it's < 500KB)
View 2 RepliesI have this code (just for example):
[Code]....
The Code-behind file looks like that:
[Code]....
So, when i use
[Code]....
SelectedIndexChanged event doesn't fire for the first item of the DropDownList. For any other item SelectedIndexChanged fires, but not for the first one.Could someone, please, explain what kind of magic is it?(I use Visual Studio 2008)
I have noticed that when I have a session that has expired, the Session_OnStart event fires with every new request.
I suppose that this behavior is not normal, because I was expecting that the session would re-start only with the first request and not with every subsequent request.
This behavior occurs only with sessions where the timeout period has been exceded.
The current conditions under which I have experienced this problem are:
I have experienced this problem with an application that is using the .NET 2.0 framework and with a session mode configured to InProc. This problem is happening both on Windows XP SP3 and Windows 2003 Server.
I want to know is there any other way to reset the sessions in page load?after delete the controls
i tried with Session.Abandon() -it kills all the session in page
this my code
[code]....
I need to handle "session end" event for my web application when user closes his browser. Session is stored in Sql.
View 6 RepliesIn my web application, I have to load different Master pages depending on the user log-in information. When I say different, I mean not just the colors but a whole new look[including navigation options]. So I am using 2 Master pages [one of them is set as default] and depending on the user information the other page will be used.
I got it to work by storing the user information in a Session variable and applying the master page dynamically using the Page_PreInit event. But the issue is, if I hit the back
button, sometimes [yeah, only sometimes !!!] the master page is reset to the default page. Initially I thought it is a Session timeout issue. But it isn't, as some of the session variables still have data. Can anyone explain whats actually happening?
I have a gridview that on it's RowDataBound event I dynamically add Image Controls to some columns.
The problem is that I lose these images on the next PostBack.
OBS: The GridView's EnableViewState propertie is already set to true
I know about the page lifecycle, but how can I persist these images if I have to add them on the RowDataBound event?
In addittion, if I add a static TemplateColumn with an Image Control and I set it's ImageUrl propertie inside the RowDataBound event it will obviously persist between postbacks. The problem is that I don't know how many columns with images I'll have, it's defined on the datasource.
[Code]....
when we go for client and server side state management in asp.net
View 2 RepliesI am doing a POC of making my website run faster. Currently it stores huge object data in Session while passing information from one page to another. What I was thinking is to use shared methods and properties instead of session. It works, but wanted tocheck if this is an optimum way to do it. Below is the code that does not use session but still pass object data from one page to another:
[code]...
i have a form on page1.aspx with several controls (textbox, dropdownlist, etc).on Page1 PageLoad event i load data from database and performe databinding.From Page1 a user can, by clicking a specific button, move to Page2.aspx to insert some details and, after saving details, he returns to page1.
if save changes are made on control on page1 before save them to db, obviously, these are lost on return from page2 (because are reloaded on pageload from db).How can i save control status between pages round trip?
i need to know the full concepts state manegemnt in asp.net,..in which site i will get the correct concept for state management....
View 4 RepliesWhy Session_End event occurs only in "InProc" mode not in "State Server" and "Sql Server"?
View 7 Replies