DataSource Controls :: Asynchronous Database Hit ADO.NET?
Apr 28, 2010
I need to do a database persistence asynchronously. So am using BeginExecuteNonQuery and EndExecuteNonQuery methods.
IAsyncResult Async = cmd.BeginExecuteNonQuery(null, cmd);
--code---
int number= cmdE.EndExecuteNonQuery(result);
Now this will work if i want to update or insert. Now what i want to do is, i need to insert values in a table and i need to retreive the identity column value for the values which are being inserted. So once the values are inserted, how do i retreive the identity column value corresponding to those inserted values. Here am passing null value in BeginExecuteNonQuery method. So what change should i do to retreive the last identity value.
I got a requirement where i need to persist 1,000,000 records/min into database Asynchronously...i Binged some wat on this topic...and i got an idea like.. do the persistence in a method which will be called like "Fire and Forget"...In that method have a queue which will takes all the record....and persist the record one by one from the queue.. I dont know whether Im right or Wrong...
I want some more inputs and references to read more about the Asynchronous DB persistence or retrieval..
Looking for a good guide to the asynchronous loading of data from the database after 2 seconds from the page_load.I need a method that does not burden the operation site!
i have the code for asynchronous call to the database. i execute the sql command into the begin method that will executed onto the separate thread. now i want to execute the another database call asynchronously so that this also execute onto the separate thread. code for one database cal is here....
I'm trying to figure out if it's possible to transfer records from SQL central database (who has a public IP address) into SQL local database (who doesn't have a public IP)?
or if it's not possible can I use a centralized website instead to pass some data into the local website? (but i'm not sure if it will have some security concerns)..
Creating a system with web front end and SQL backend (microsoft obviously). I have tried using the asp.netsqlprovider but i can;t as i am only allowed one database on the server, so i then tried to update my current database with the triggers to input the schema into the already existing database.Next step i create my own table with two simple fields of username and password and try and authenticate that way, i can't get that to work either.
I ahve limited permissions on the network as i am a University Student. I really don't know what to do. Never had to create a log on system before and i thought it would be far simpler than this. I ahve used Microsoft's sqlprovider schema before and it worked fine. I have also authenticated via IIS and AD too before. I can't do any of those two in this instance it seems.I need an alternative for logging in users, if needs be in can be crude. I also still need to have some kind of two different views too for logged in users and not logged in users, but that can change if needs must.Don't let me down people, haha. Think this posts in the correct place, i could not find another one i thought could be more relevant.
i would like to ask about how to sync data from client sybase database import to our sql server database regularly(set time to sync everyday) by create a file in our sql server database
I have a development database and one in production. There are two different sets of data in each database. On my dev system, I have mostly dummy data that I test with and in production is the real data for my web application. I recently added a new feature to the app that required a new table, and a new field for a foreign key in an existing table. I now need to upload that new structure to the production database without overwriting the live data with my test data.
If I run the Database Publishing Wizard, and choose "Schema Only" will it import the new structure and leave the existing data alone, or will it drop the records in my production database tables?
I have 3 user controls that I have to load at the same time. They each contain a gridview that pulls data from the database. They are doing a "delay" load of the data so there is a progress bar template that shows that the data is loading however the first gridview fires and loads, then the second, then the third and I need them to all fire at the same time.
I am generating an html flow into Update Panels in a content ASPX page (VB.Net 2008 Professional w/ SP1). These include EDIT anchor tags that call a javascript function which calls __doPostBack(target, args); so I can interact with the code behind. This all works fine except on some of the postbacks the connection with the browser just seems to get closed prematurely and suddenly the webpage displays a directory listing. When debugging it, it only happens sometimes, at different places for the E and D options below but not for the V or AddPost or AddArticle. I am just stepping through E or D and suddenly the web page show a directory listing. (What is that? Is the connection crashing? Is the page suddenly redirecting to the base directory because it crashed?)
This is a very common error as evidenced but the very large number of problems and suggested solutions on the web. I finally got around it last week but can't remember what was the step that did it. At that time, I was building a web application rather than a web site. Is that the difference? As you can see, it is no longer in the APP_DATA folder and is named membership.mdf rather than aspnetdb.mdf. I ran aspnet_regsql.exe to create it and actually had it working and was updating it successfully. But for other reasons, I had to scrap the application and decided to re-create it from scratch as a web site rather than a web application. I had been using Visual Studio 2008 to build the web application but am now using Visual Web Developer 2008 Express Edition to build the web site. Unfortunately, the Visual Studio application will no longer open so I can't verify that the web application still works. Can anybody help? (Please!!!) BTW, ASPNET and NETWORK SERVICE both have full control over the membership.mdf.
I have a scenario where I have two data grids (both dynamic) to be loaded onto a page. However, the data that needs to be shown on one of the grids has no dependence on the data of the other grid. So, when fetching the data, I want to fetch it in an asynchronous manner and bind that data to each of the grids individually. Currently we have a code like
GetData(ForGridOne) ; GetData(ForGridTwo);
I want to make these calls asynchronously so that in order to load the page, the time taken would be lesser. What should be the ideal way to go forward with this ? One more thing, we would be hosting the application in a portlet which doesn't support AJAX.
I am having a gridview in which there are many columns. The Last column is button column with command name as Select.
In row command event, I am creating a webreqest instance and passing the url of the required page in my application, and based on the response status code, updating the column value for that particular row.
This is working.
What I want is this should be asynchronous. Means, if I click the first row Select button, then it should fire and process request. Meanwhile I should be able to click other row's Select button, even if the previous button's click event is still in process.
Means the communication should be asynchronous. Even if
I use VB.net and use sql database. My database' name is database.mdf. I create one button and one textbox controls. When put some words in the textbox and click button, the words will recorded in to database.mdf. How can I do it? If I put a paragraph of sentence maybe 1000 words, is it also ok?
I have a bunch of views in my database that I want to use in my application. What's the best (fastest and/or easiest) way to use these? I'm using a sql server database.
I have an SQL database which I wish to query, I have the queries set out and working using the SQLDataSource Control.Is there any way of using web methods to query an SQL Database.I realize this may not be ideal when the SQLDataSource control offers such functionality but it is for a piece of college work and I am not entirely sure which way they want it to work, as all it says is to "Implement a client application and a set of web services".
So is it possibile to use a WebMethod to perform SQL based queries or queries which are not SQL based and if so how do you go about creating them?
i am trying to update the database for a simple bank project. I am updating the current balance of an account. What i did was read the current balance first then add the deposited amount and then trying to update it to the database. here is the code
