I am a windows application developer doing a web application with VB.net and SQL 2008 for the first time.
I have developed a web application where users are supposed to view a file after selecting from a listbox. I then pick the users logon ID from windows then store in database and produce statistical reports later. It was working fine on my local machine till i deployed it on server to make it accessible on the intranet. The server OS is Windows 2008 Server and runs IIS. My issues are as follows,
1. The application is unable to store the user logon id from the client.
2. When more than one user uses the application, then there are errors but one user does not produce errors.
I am a windows application developer doing a web application with VB.net and SQL 2008 for the first time.I have developed a web application where users are supposed to view a file after selecting from a listbox. I then pick the users logon ID from windows then store in database and produce statistical reports later. It was working fine on my local machine till i deployed it on server to make it accessible on the intranet. The server OS is Windows 2008 Server and runs IIS. My issues are as follows,1. The application is unable to store the user logon id from the client.2. When more than one user uses the application, then there are errors but one user does not produce errors.
I am using Integrated Windows authentication and Role based authorization.The web.config file has two Active Directory groups.Sample code of web.config file for Role based authorization (Actually I got this sample code from a moderator of this site Gary works well).
So user's who doesn't belog to "Group1" AD group, should get Unauthorized error. It works exactly like that. But, before getting unauthorized error, it shows a pop up screen (as shown in the attached picture) prompting to put userid and password. If a user in AD group "Group1" accesses "Blood group. aspx" page, popup message doesn't come which is correct. Following is the code in web.config file to handle errors:
Code: The <customErrors> section enables configuration of what to do if/when an unhandled error occurs during the execution of a request. Specifically, it enables developers to configure html error pages to be displayed in place of a error stack trace. -->
Question 1: why does the popup box prompting user id and password comes up? Question 2: I have put in web.config file in customErrors tag to direct to Errors.apsx page when I get 401.2, it should be redirected to Errors.aspx page. But it is not getting re-directed.
I have a web page in my project that views a selected pdf file. The problem is the file stays locked with the process w3wp.exe which I assume is the adobe file reader or something. How I can release this process after viewing it? Or another way of viewing it without locking the file?
Here is how I am doing it:
Code:
Dim File1 As String = System.Configuration.ConfigurationManager.AppSettings("Report") Dim R1 As String = Page.Request.QueryString("r") If R1 <> "" Then Dim path As String = File1 & R1
A client of ours uses a home owners association website as a service. They can add pages to the site. We added a page and used an iframe in the html code to display another website which is needed. It works fine in all browsers except some copies of Internet Explorer. For example, it does not work at my home IE8 but may for others.
But here is where it gets wierd! When I try to view it in IE, it fails by just keep trying and eventually fails. Then if I past the URL it is trying in the browser by itself, it loads. Then I go back to the association website and try and it will work by loading the website in the iframe page. It does this only after I view the website url by itself in the browser.
I am getting "ASP.NET Session Expired" error when viewing SQL Server 2008 reports using the Microsoft ReportViewer web control. I found this article http://balanagaraj.wordpress.com/2009/09/25/session-has-expired-in-asp-net/ which suggests to use one worker process in IIS application pool, but that may affect performance, is there any other solution for this? I tried setting "AsyncRendering" to false already and that didn't work.
we are using the WCF service and hosted using a console application, now we are using LoadRunner and hitting it concurrently
Where giving 50 hits at a time few requests (26) gets completed successfully and remaining gives error TCP error code 10061: No connection could be made because the target machine actively refused it.
I am working on a website in which more than a thousand users can login at a time and there may be more than 50000 total users. I am worried about the performance of the application in case of concurrent access.
what is the best way to manage that, so that my application runs without any performance issues.
in one request i am updating session variable. in the other request, i am trying to access that session value, but it was blocked until the first request finish. I am using C# with ASP.NET 2.0 UPDATE: My page code looks like this.
concerning requests being blocked from a main window after a popup window had initiated a file download. Further requests from the same session are being queued until the download is complete. So, is there any way to override this? Is there anyway to tell asp.net to not serialize same session requests? Is there any way to tell asp.net to ignore session for a specific request...httphander(module) or otherwise?
why requests from the same session are being queued until the download is complete. please tell me the funda behind it and how to overcome it.
I'm developing web application with concurrent user using the application. The problem i'm facing is that if the first user login his details are taken affecting the second user how is process the data in the application.How to avoid it?the best way to code to maintain concurrent users.
I'm having an issue with my hosting provider (winhost.com). My app is built on ASP.NET 4 MVC 3. Up until a few days ago, everything was running fine. All of a sudden I've started getting 503 errors when trying to access my site (wikipediamaze.com). It doesn't happen all the time, just most of the time.
When someone starts playing the game a request is made to wikipedia.org to get the contents of the page for the current step in the puzzle. Basically I'm screen scraping wikipedia.org, injecting some html and then displaying the results. All of my web requests are closed immediately after receiving the data.
What winhost is telling me is that there are connections remaining open and causing any additional requests to the site to get the 503 Service Unavailable Error. What I can see from my end is that only 1 request is ever allowed to be made to wikipediamaze.com at a time. If you keep refreshing the page you'll eventually get the HTML but all subsequent requests (css,images,js) all get the 503 error. Even pages that don't ever call out to wikipedia.org.
If it was an issue with connection throttling in IIS, do both incoming and outgoing (requests made internally) fall in to the same bucket? If I'm sure all of my connections are being closed (and I've never had this issue before) what else could cause this?
I have written a code using SRS 2005 where report will download in PDF/EXCEL format. All work fines except when we downoad same report concurrenlty.
When same report is downloaded by 4-5 users simultaneously some of the users get error:
Exception:System.Net.WebException: The request failed with HTTP status 405: Method Not Allowed at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
for this error on web it is mentioned that, try to use .asmx instead of .wsdl but I called asmx only.The reports works fine for single user when downloaded. Why sometimes it is not working? Is the issue with SRS web service
I am developing an ASP.NET application that takes user input and serializes them into a text file. Now, when a second update request comes while the file is still being written, an IOException will be generated.How do I handle concurrent update request to this file?
I am involved in designing a asp.net webforms application using .NET 3.5. I have a requirement where we need to log exceptions.
What is the best approach for exception handling, given that there would be concurrent users for this application?
Is there a need or possibility to log in exceptions at a user level? My support team in-charge wants to have a feature where the support team can get user specific log files.
To give you a background, this application is currently on VB 6.0 and we are migrating it along with some enhancements. So, today the support personnel have a provision to get user specific log files.
If multiple users access a web-form at the same time, how can I allow that using my code? Essentially each user reads and writes one variable in the application, and concurrent access is causing problem there.
Suppose I have two threads(Thread1, Thread2) where the threads are accessing the cache for a given object such as in the code below nearly at the same time:
Dim expensiveToGetData = Cache("ExpensiveDataKey") If ExpensiveToGetData is nothing then 'because the cache has expired ExpensiveToGetData = LoadExpensiveDataFromDataSource() Cache("ExpensiveDataKey") = ExpensiveToGetData end If ProcessExpensiveData(ExpensiveToGetData)
Isn't it possible for both threads to load the cache because they both requested data from the cache that was nothing/expired? I've run some tests on a local machine and it seems that the cache is being loaded more than once. Is this a normal pattern?
In my ASP.NET MVC2 web app I have a page which goes off and gets results from a number of different web service feeds. These return times vary so I want to basically display them as they return after the page loads. I also want my user to be able to kick of requests that can run concurrently with these other requests.
At the minute my page just seems to queue up the requests. The web service calls returning one at a time in the order they are called and then the user can kick of requests.
Is this a case for the asyncController or is there an easier/better way of working this?
I would like to know the number of users logged into my ASP.NET 2.0 application.
Points to be considered:
1) Simplest way would be to use Application or Cache object to have the counts on Session start or end. However this would fail if there is a worker process recycle. Wouldn't it?
2) Should't make a difference whether the session is inproc/state server managed/ or SQL server managed.
3) Should preferably be seamless to a web-farm architecture.
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.
