ADO.NET :: Reflecting Database Changes Immediately On Page?
Aug 22, 2010
I have a web site that is highly dependant on a SQL Server 2008 database. I am using linq to sql to connect to the database and require the website to reflect database changes immediately. Currently the changes are only reflected once a postback occurs and the database is requeried.
Is there a way to get the asp.net page(s) to be alerted of an database change and then to reflect it immediately, or within seconds, on the display? I am aware that one can use the SQLDependency class and ADO.NET to do this, but am not aware of any linq to sql possibilities.
I am having a task that, i need to insert a row in gridview but it should not effect in to database immideately. I am having a submit button in the form, whenever i click that submit button all the data in the form should be inserted into the database in their respective tables.
I have an asp.net application that was working fine on my old dev machine that run XP pro and Access 2007. Although I did have problems getting the ACE OLEDB provider to work and so stuck with the old Jet provider.
I was given a new Windows 7 pro computer that also has Access 2007, I had no problems moving my app to the new dev machine. No problems that is until I had to add a new column to one of my database tables since then my app has been very weird when deleting rows (I am using the OleDbDataAdapter to access the database).
Existing data within the database deletes just fine, however if I add new data and then immediately try to delete it nothing happens, no error, no delete, nothing. This is the weird part; if I navigate away from the page I use to maintain the database (i.e. click my link back to the home page) and then revisit the database maintenance page the new data can be deleted just like old data. I add Response.Redirect() into my code to see if that would work but no, only navigating away from the page and then returning allows me to delete the data I had just added.
This problem did not occur until i added the new column to the database table. There is no problem with my code, the same code worked fine on the old machine and on the new machine right up until i added the new column to the database table. My thoughts are that it must be some combination of using Jet and IIS7. Oh and both the app and the database are on the same machine.
What would be the standard easiest way to change the css class of the link that is the link for the page that is currently displayed. So that it will reflect on the menu links.
I am opening a new window on clicking the button using folowing code
[Code]....
In a newly open window their is a form. on clicking the Save button i am cloging the clild window and refereshing the parent page using below mention code
Page.ClientScript.RegisterStartupScript(this.GetType(), "close", "<script language=javascript>window.opener.location.reload(true);self.close();</script>"); Upto here everything is fine. but the newly added data in the child window is not reflecting in the parent page.
I am using UpdatePanel and UpdateProgress on my webform. On my page_Load, I am checking some of the session variable if thats null then I have to redirect to my other page. Now, as I have updatePanel, we cannot use Response.Redirect so I have this code to redirect to my other page after checking that session variable.
[Code]....
But the problem is that my page continues execution after this line. I want to immediate transfer my page to this other page just like Response.Redirect but it keeps executing and redirects at last. If it comes to this line of code, I immediately want to redirect to my other page.
An external server sends incoming SMS messages converted to HTTP requests into my sometimes very time-consuming .aspx page. If no response is returned to the external server in 20 seconds, this is considered as an timeout and the same message is sent to my aspx page again (and maybe again....The optimal solution for me would be that the aspx page reads the incoming message (as an HTTP request to the aspx page), starts the processing of the message in another thread, and immediately renders response back to the external server. The external server has no interest in other stuff than the HTTP status (normally 200). When the processing of the message is completed this results in an entry into the log file of the application.
I'm fairly new to web services and I'm experiencing a problem where any changes to code behind pages don't seem to be reflecting when I try to view the web service.For example. I have a method that does a bunch of emailing to staff. When I comment out the method, and run the web service in debugging, I see the method available and I'm able to execute it.
I have a webaplication which is converted into a setup for installation.
Now i have made change to the webapplication and have build the new version of the setup,But this version of the setup doesn't have the changes that i see in the debug mode.
I had made some changes on the aspx page & on the aspx.cs page(code behind). It works fine on my local machine, but when i uploaded those pages on the live server, the changes are not reflecting over there. The site is not compiled & i have been replacing the files on the correct folder, but somehow the changes are not reflecting. I can see my changes on the aspx page, but the changes applied on the aspx.cs page are not taking effect. I even tried to put Response.Write on Page Load but nothing happened.Do i have to refresh the IIS server or some other tricks that might make the changes take effect on live
I'm trying to create an asp.net page where an administrator will be giving permission to people of different OU groups to view web pages. I need a dropdownlist of ALL the available OU's in the active directory. This list needs to not be limited to those OU's of the current user but all OU's of all the entire active directory. I've tried looking at code from [URL] but there isn't anything there that lists exactly what I am looking for. Does anyone know how to do this?
I could not find a category on which my question is based on.So i did it here.I am working on a website build inasp.net 2.0, c#.Recently, when i m doing changes(adding labels changing fonts) on a particular page, they are notrelfected in the browser when i run the website. It have never happen before.I copy pasted the code in anotherfolder, the problem still persists.I also set the dynamic port property false, and set a port manually, still no luck.I also clearedcookies in the browser still the problem remains.
When i click delete button in above image, selected item should be deleted from listview. (Note : i should not use Listview1_deleting event, it should be done in delete button event only.)
In my code I am assigning certain values to labels from data reader.While debugging I can see that proper values are assigned but the changes are not reflecting in the end of debug on the webpage that are executing.
[Code]....
When the page is loaded for the first time the first row from the datareader is coming properly but after the click of next button change is not reflecting on the webpage.
I see that the changes done to CAS permissions (say changing the permission set of applications running in my computer) do not work immediately. I noticed before that the changes did take effect later on. Can anyone tell me what needs to be done to see the effects of the changes immediately?
In Visual studio 2008 I changed css methods (like font size increase). Which is not effecting when I run immediatly. If I publish to server. I can see changes. Why it is not happing in from VS 2008?
When I make a change to a form, add a control, or text, etc., the updates don't appear immediately in the web browser after I run the application again. I have also tried saving the changes before running it again. Same results in either IE or FireFox.
I have also set my browser to check for updates everytime a web page is loaded again.
How can I retrieve the row ID immediately as I insert a new record with LINQ? I need to refer back to it to update the row since it will be the only unique data in this particular table ( it's the primary key and the ID number is auto generated)
I am using Entity Framework for my .NET application. I have been able to return objects and their directly-related objects as well (very convenient), but I am having trouble getting the objects of those objects.
IEnumerable<Lot> i = (((ObjectSet<Car>)_carRepository.GetQuery()) .Include(a => a.CarTypes).Take(10).ToList()
This works and I can access carTypes, however I cannot figure out how to access tables associated with CarTypes (e.g. tables which have fields associated with the car types). I tried to use a Join however I was unable to figure out how to get it to work right.
In pageload, if you do Response.Cookies.Add(..., immediately in the next line, you can access that cookie via Request.Cookies(... I know that under the covers, the cookie is added to Request.Cookies by .net, but the original request never had that cookie.
If what I'm saying is correct, why is it this way? Shouldn't the cookie be available in the following request? Shouldn't the immediate access to Request.Cookies(... be null?
I have a relatively simple AJAX accordion control running on a C# website. It works perfectly on Firefox, Chrome, IE, but not on Safari. On the iPad and iPhone, the accordian expands, but then almost immediately collapses again. It is supposed to stay open (and does so on the other browsers). After expanding, the page looks like it is refreshing (I can see the bar at the top).I have other Ajax controls on the page that all seem to work fine. I have not put in any other code to expand or collapse the accordion control. This page uses a masterpage, if at all relevant.Here's what the properties look like up to the start of the panes:
