In my web application, some users open app in multiple browser page. How can I catch users when they do it?
Edit about why I need such this thing: I have a variable named DealerID, carried between pages with session. Some users want that: "While I make my jobs with a DealerID in one page, make other jobs with another DealerID on another page"
I have 2 different website/applications with 2 different asp.net membership databases in the same server. Now my client wanted to create a user in one website and add that person automatically in to the other application/website/database too. Right now my applications create users using asp.net membership and added to its respective databases. Is it possible to create a user from different application using asp.net membership?
View 6 RepliesWe have created an ASP application with MS Access as back end. We have implemented this web application on our server machine and accessed the same from on my local machine.
Our application works fine when only one user accesses it (All insert, update works fine). But when multiple users connect to this application and try to update the database, then application get crashed. As per our knowledge, this is happening because of access database get locked, when one user open it in exclusive mode.
I hosted my page using IIS and actually got this problem - unable to open the page, error saying too many users but in fact I only access from a few PCs.
View 3 RepliesIn our IIS (v 6.0) there is one classic ASP app deployed, which has around 35 concurrent users. Now, a new ASP.NET(3.5) app needs to be deployed on the same server which will have its own 50 concurrent users. In this scenario should we create a Application Pool for this new .net app? What are other recommendations for the IIS settings in future?
View 3 RepliesWe got a problem that Sessions got mixed up when open multiple tab in a single application. We could change the code that do not use session variable in a that level, but a tons of page need to be modified. We need to find a quick fix for this problem. Is any thing we can do in code level to prevent user open multiple tab in a single application? O any thing we can do to keep its own session for a single tab?
View 6 RepliesWhat whould be the best way to prevent multiple users on a page?
For example if a user is at the page "Home.aspx", no other users should be allowed to go there.
I'm using asp.net on the server and the js-frameword jQuery on the client side.
i am still relatively new to web development and have been encountering some issues when multiple users click a button at the same time.
i was wondering what could be causing this as i have already removed all static variables realiseing that was a mistake and replaced them with viewstates were needed then sessions when moving across pages
How i can open windows application form aspx page
View 4 Repliesn my button_click event, I have three data connections being opened and closed... I'm wondering... should I have one try/catch statement with the three connections and executions in the single try/catch... or should I have a try/catch statement for each connection/execution?
View 9 Replieswhat is the order of multiple catch?
Place under the try block :
1 :Major
2 :Minor
3 :Critical
some thing like this..
try
{
}
catch(Exception1 ex)[code]....
I want to add a button to my user control in SilverLight 4.0 application which will open a new browser window with an aspx in it when it is clicked.
Additionaly, can I lock the SL application until this new window is closed (Alike a modal dialog)?
How can I call an aspx page from a SilverLight application, so that it opens in as a modal dialog and it blocks interaction with the SL application until the dialog is closed?
View 2 RepliesI have developed Dynamic Data application for DB administration. I'd like to show thrown exception message (when connection to db is closed) in UI friendly manner. I cant figure out where to catch this exception.
Tried EntityDataSource events in List PageTemplate - no success.
Here is the code copied from [URL] In asp.net code behind, I use try-catch try to catch any error but never catch it. In SQL database, if I rename Employees to Employeesx or change column DepartmentID to DepartmentIDx, record will not be deleted (it is right) without any error (it is wrong, suppose catch an error).
CREATE PROCEDURE DeleteDepartment
(
@DepartmentID int
)
AS
BEGIN TRANSACTION
DELETE FROM Employees
WHERE DepartmentID = @DepartmentID
IF @@ERROR <> 0
BEGIN
ROLLBACK
RAISERROR ('Error', 16, 1)
RETURN
END
DELETE FROM Departments
WHERE DepartmentID = @DepartmentID
IF @@ERROR <> 0
BEGIN
ROLLBACK
RAISERROR ('Error', 16, 1)
RETURN
END
OMMIT
I'm using a static Timer in my Global.asax to run a method at regular intervals. When the method throws an exception, my application is stopped. I have used an empty catch to prevent exceptions from stopping the application something like below code. Is there a disadvantage to use such an approach?
[Code]....
I get this error in the browser:
Code:
Thread was being aborted.
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.Threading.ThreadAbortException: Thread was being aborted.
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:
[ThreadAbortException: Thread was being aborted.]
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +486
System.Web.ApplicationStepManager.ResumeSteps(Exception error) +501
System.Web.HttpApplication.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +123
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +379
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053
I have try{}catch(Exception ex){} in the right place:
Code:
protected void Button1_Click(object sender, EventArgs e)
{
try
{
// all processing occurs inside here
}
catch(Exception ex)
{
}
}
I even created a global.asax file and on the Application_Error event, I wrote a code that would email me the error (and i'm not getting an email regarding that error when I get the error shown above). I know for a fact that the thread is going inside the "try" statement because I send emails to myself whenever it finishes certain codes inside of it. So how come I'm getting that error in my browser instead of it being handled in my "catch" statement? I have two problems here, one, why is the exception not going to my "catch" statement, and two, why am I getting that error in the first place.
Note: my web app calls a webservice.
I have created a web application which has two section user and admin. Admin files are within
~/admin folder and user files are in ~/User folder. Admin and user has two different login page within respective directory.
Now I want two apply form authentication for admin and user section. Is it possible to apply form authentication for two different section in a web application?
how many users can open a connection to Microsoft Access database simultaneously ?I am using asp.net 4.0 to write my application.
<add name="E_ShopAccessConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|
eport.mdb;Persist Security Info=True" providerName="System.Data.OleDb"/>
"With ASP.NET I've found that request are processed sequentially, one at a time, at least on a server with one CPU. If one request blocks for some reason, maybe on a long database query, then all users must wait
until it completes, for their request to process."
Is this true? Do multi-core processors effect this? Also if you do ahve more than one CPU will it stop processing sequentially automatically or is the default always sequentially?
I have an asp.net page that contains an Iframe embedded with some data and a ImageButton. On ImageButton click event (server side) I have Response.Redirct:
Response.Redirect("results.aspx");
This always open the results.aspx in iframe. I want that results.aspx should always open in the parent window. I tried the following till now but none worked:
Response.Redirect("<script language='javascript'>self.parent.location='results.aspx';</script>");
Response.Redirect("javascript:parent.change_parent_url('results.aspx');");
..and also tried the options from [URL]
I have a master page, which has a Menu control:
[Code]....
Now I want to "catch" the event when someone click on the new menu item ("Add File"), which will cause a panel in the content page to become visible. I can't catch it in the master page, because then I won't have access to the panel, and I don't know how to catch it in the content page.
What is the trick to doing error trapping with javascript and Ajax controls in a VB.net page?
View 1 RepliesI use an updatepanel and I register a handler for endRequest to catch errors: Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); On the server an exception is thrown to test the client side. The problem is that in IE and FireFox EndRequestHandler is never called! It works as expected in Opera and Safari. On a simple page with few controls it works as expected in all browsers. What I found out with Firebug is that the response is Content-length: 67, but there is no response (empty tab for response)! The expected response is 53|error|500|Object reference not set to an instance of an object.|
I have not debugged the ajax library precisely but what I have seen is that some code runs to prepare for pageLoading event (maybe because it cannot detect the error?), but there is no information for updatepanels from the response and an error occurs trying to use an object for updatepanels which is null. The error is caught by a try-finally block.
I have a button which starts processing. I want that when ever a button is click from page1.aspx .. a count down timer should start and displayed on page2.aspx. I am thinking of using iframe to join 2 pages.
View 9 Replies