Web Forms :: Stop An Application From Code Behind?
Mar 18, 2011
I'm going to check the database schema at Application_Start event handle in the Global.asax file. If something wrong, I hope to stop the application instead of just catch an exception.
I have a repeater and a user control on my page, when any of the items in the repeater are selected this refreshes the user control accordingly. However I found that if I selected another item before the page/user control had finished to load it produced an error, when left to let the page/control fully load and reselect no error.Clearly this is interrupting the code before its finished, can I stop this from happening by doing some sort of check to see if the user control has finished loading?
my ddl1 and ddl2 in update panel so i want to insert item in ddl using following condition. It is working fine but when you choose ddl2 more than one then it insert item every time meand duplicate value and populate ddl1 every time.
protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e) { if (DropDownList2.SelectedValue=="1" ) { DropDownList1.Items.Insert(0, new ListItem("first", "1")); DropDownList1.Items.Insert(1, new ListItem("Second", "2")); DropDownList1.Items.Insert(2, new ListItem("Third", "3")); } else if (DropDownList2.SelectedValue == "2" ) { DropDownList1.Items.Insert(0, new ListItem("first", "1")); DropDownList1.Items.Insert(1, new ListItem("Second", "2")); } }
I use a validation control to check if value entered is numeric. When I type letter in the textbox, the error messages shows for a second, then the application continues, and eventually throw exception.
I'm going to add server side validation in code behind. But I wonder why the validation control doesn't stop the application. I don't see any difference between this web form and other web forms where validation controls work fine.
I'm executing one stored procedure from the '.net' code. Since there is a lot of data, it is taking too much time to execute. Is there any way to stop this execution from the c# code?
In other words, if we execute the query from database itself, there is a option to stop its execution but in the code is it possible?
I am launching a click once application on button click. I am using Response.Redirect(http://domain.com/application.application) to open my click once application. If I click on that button again then I am able to open one more instance of that application again. I want to put a restriction so user can open only one application.
I set the line in code for debug and while running it does not stop there. So I use System.Diagnostics.Debugger.Break(). Sometimes it stops and sometimes the debugger shows a blank screen. All use the same inputs.
Currently users select a record in a gridview and click on the delete button. Delete button passes certain variables to identify the record, makes a SQL connection and then deletes the record by executing a stored procedure. This is way the delete button's code behind works. Now we need a confirmation box if a certain flag is False. If the users select YES then they should be able to delete any way otherwise clicking on Cancel should stop the operation. I don't want to use the onClientClick event of the button like many examples on Web show, instead I am using the jQuery, that uses the button ID and pops up a confirmation dialog. The issue I am having is even if the Cancel button on the confirmation dialog is clicked it still goes on to run the code behind, executes the stored procedure and deletes the record. The browser being used is IE 7.0, how do I stop the button from running the code behind in the button_click event if they select cancel?
I have tried return false, e.preventDefault();event.propagation, event.returnValue = false etc but can't stop it. Here is the jQuery, that goes to the webservice when clicked and determines whether to display the confirmation or not when another stored procedure returns the record count of 0 or more. Like I said it works fine in getting the flag value from the SQL but does not stop at the client level and continues on to the code behind of btnDelete.
I have an ASP.NET page and have a couple of linkbuttons and Iframes. The pages in side of these IFrame take long time to load, I want the user to navigate to another page by clicking one of the linkbuttons. Now, it looks like it is waiting for the the iframes to finish loading when i click on a link button, the page is still trying to load (instead of navigating to different page).
Is there any way I can stop the iframes to load and go to another page?
How can I make my application installed in my PC to start(ie., to popup for username and password) when I logged in to my PC, so that I can provide my username and password to the application and log in to it,similarly like gtalk that popsup for username and password once logged in to PC?
I am working on an ASP.NET project. When I am debugging, I often want to switch back from my browser to Visual Studio (2008) and edit some code. Visual Studio then won't let me edit the code, unless I explicitly quit debugging first.
Is there any way to configure Visual Studio such that is automatically stops debugging and allow me to edit the code, or do I have to stop it manually each and every time?
Disabling Edit and Continue does allow me to edit the code, but this does not force VS to stop debugging...
Whenever I stop debugging an ASP.NET IIS web application it seems to take very long before VS2010 becomes responsive again (2 or 3 minutes). This happens when I close Internet Explorer 9 (which stops the debugging session), stop debugging in VS (which closes the browser) or when I detach the debugger from the debugging menu (which leaves the browser open).
My CPU time for devenv.exe goes up to 25% during this period of time. I use the professional edition (no intellitrace). Starting without debugging performs ok when I close the browser. I have some add-ins and extensions installed like TestDriven.NET, Resharper, PowerCommands, Productivity Power Tools, VisualSVN,...
If a user enters [URL] into a browser, I need to redirect to [URL]
Is this possible to do?
I can't work out a way to do this as the routing engine is not executed for a physical page and in the page.aspx Page_Load method I have no way of knowing whether the URL was entered directly or was the result of a route.
This is a really odd situation, so hopefully I can explain it well enough.
I am deploying an ASP.NET 4 webforms application to a Windows Server 2003 SP2 server running IIS6.
Here's the problem -- when the application pool recycles its worker process (w3wp.exe), about 80% of the time, I will get an ReflectionTypeLoadException error trying to access any page in the app that contains an EntityDataSoure every time I try to view it.
However (this is the interesting part) -- the other 20%, it works just fine. I've actually resorted to turning off recycling the worker process entirely for this application pool and just add/remove whitespace from web.config forcing the site to recompile until I get a "good" w3wp.exe.
If this isn't clear, what I'm saying is: the actual worker process doesn't work at all for pages containing an EntityDataSource for about 4/5 times it starts, but still manages to serve all other pages just fine. Once you get a worker process that manages to serve a page with an EntityDataSource, it works every time until that process gets recycled.
My question is, how can I debug this? It works fine on my dev machine, it works fine on the server as long as you get a good process running, but iisreset or a server restart or anything that kills the worker process is almost guaranteed to cause the site to not come back up and throw this ReflectionTypeLoadException.
I get the following error with the following code. Also, my Global.aspx Application error did not get this. Why wouldn't Application_Error pick this up? What code do I need to change?
***HERE IS THE ERROR***
System.NullReferenceException: Object reference not set to an instance of an object.
***HERE IS THE CODE BEHIND FOR THE PAGE THOWING THE EXCEPTION***
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not IsPostBack Then LinkButton1.PostBackUrl = Request.UrlReferrer.ToString() End If End Sub
***HERE IS THE GLOBAL.ASPX APPLICATION ERROR CODE***
I want to insert in two table at the same time.I write this:
DALBase MyDALBase = new DALBase(); int categoryId=Convert.ToInt32(MyDALBase.ExecuteScaler(System.Data.CommandType.StoredProcedure, "insertmainmenu", new SqlParameter[]{ new SqlParameter("@NodeName",txt_mainmenuname.Text),
[Code]....
but the problem is I havent access to categoryId before InsertI need categoryId to make a Urlstring url = txt_ MainEnName.Text + ".aspx" + "&CategoryId=" + categoryId;@Url =urlHow can i do it?
I have 25 websites in which each website have 500 pages. I want to know in which page the specific code was implemented let say if i want to know in which page <span>test<span> is implemented under each website. Is there any way to know through any tool or application.