Forms Data Controls :: Synchronize GridView With Database After Changes?
Jan 31, 2010
I have a Gridview that is populated with and ObjectDataSource set up to allow anonymous users to populate it. After logging in, the database is filled with the Gridview's data using the following:
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The database's primary Key is filled by the "lblItemID" string at the beginning of the loop.
deleting the item from the database keying on this primary key. The gridview deletes the proper row using it's DeleteMethod, but obviously I don't have it set up properly to delete the same PK row from the database.
I really don't want to mess with the DataSource's DeleteMethod (and I'm not sure if this would help at all anyway), so is there a way to look for these deleted ItemId's and remove them from the database while executing this Loop statement?
I'm using Content Management System, DotNetNuke for my dynamic website. DNN itself they have one database, I named it dnnDB. Inside the dnnDB they have the users table which have the list of users. I need to be able to pull this set of information or synchronize to my own database, myDatabase for development purposes. I do not want to incorporate my database into dnnDB, afraid that I may corrupt the system.
I want to merge a software with a website.I have no source code of software, but i want to the database of online data and offline data will automatically synchronize. I have only control over website, online database and offline database.. Is it possible, if yes how?
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but when i feed data in offline database, online database automatically updated.
I need to synchronize data between 2 tables. i need to update records on table2 corresponding to table1. I also need to add new records in table2 by getting new records from table1.
A server with a number of different clients on different networks. Clients will have to synchronize data with the server.
Just imagine we have a simple data table on the server. The client has the same table schema and works locally but at a certain time of the day it must upload and synchronize with the server.
Was thinking maybe in doing the following. On the client have two extra columns:
Ej:
- synchronized (Boolean, default to false) - Time it was synchronized (date time). - Have a wcf service on the server.
Whenever it needs to synchronize it calls the service. The service then updates data on the server. The client will wait for a response which will inform whether the synchronization took place or not. If it did it updates its local table, setting synchronized to true and the time.
I used the Database Publishing Wizard to create a copy of my live SQL Server database for testing purposes. Both the live and test databases are hosted by my ISP.
What is the easiest way to transfer design changes from one database to the other without altering the data (assuming that the design changes are compatible with the existing data in the target database)?
Any proposed solution would have to be available via Visual Web Developer 2008 Express or SQL Server 2008 Development Edition.
I want to make sure I go about this in an efficient manner. I have a gridview. On the gridview, I have some columns that are read only values . These values go through calculations based on values in a database. The stored procedure takes information in the database, does some simply calculations (this value * that value / another value type of stuff) then returns a recordset as a datasource for the grid.
Other columns on the gridview have values the users can enter data. I want to be able to provide a recalculate button that will run calculations based on the entered values which will change the readonly values and then repopulate the gridview's read only values without going back to the database. This recalculate button is not the save to the database button. The save to the database button will take the values in the user entered columns and save them to the database. Then, the next time the grid is called, the page calls to the database and loads the grid.
So, what I'm looking to do is allows for recalculations on a gridview, a gridview with about 24 columns and about 1000 rows. My first thought is to create a class that reads the gridview and then applies the business rules, then updates the gridview some how. Or, maybe have a dataset table thats i read the value from the user inputs, then apply business rules and then bind the gridview to the dataset table. Do any of you have thoughts here, maybe have done something like this?
I found a good website to show presentation with video and slides at the same time. The video is nicely synchronized with the slides. I would like to know whether it can be done in ASP.NET web form. If yes, how to do it? What is the logic to implement this feature?
I have what I consider a pretty complex situation that I am not sure if it can even be accomplished via an ASP.NET web application. (I am using aps.net 4.0) But what I want to do is design a "online auction site" that can handle many autions running at the same time. So I can only imagine eBay and all the other millions of auction sites out there are all doing this someway or another. My biggest concern is that I want to make sure the design here to make the site as effiecent as possible. Here is specifically what I am trying to figure out.
I think I need to create an object (per active auction) that stays in memory for the life of the auction. This object would have at least the following information:
Aution ID, time remaining, highest bidder id, bid price, Thread Control Variable, etc...
Now here is the tricky part that I think is vital for auction sites. Lets say you have 500 users on my website that are all watching the same auction and it is getting down to the last second of the auction and they all click to place a bid at the same time. Keep in mind this may also be at the same time hundreds of other users are placing bids for other auctions going on all at the same time.
How do I get all these requests (bids), for a single auction, lined up so that they are processed "one at a time"? But some how I need to be able to make all requests wait in a queue until it is their "turn" then I would need to be able to update the in memory object, write a record into a SQL database and then begin returning information back to each user.
Based on other development languages I have used in the past I know their were objects that I could create that could be used to get multiple threads to run in order (in other words syncronized). Usually it would be a case where I would be listening on a server socket and could do something like ThreadVariable.Lock, <process the request>, thenThreadVariable.Unlock. What that would do, is force all threads that tried to call ThreadVariable.Lock to wait until no other threads had the variable locked then it could proceed. Obviously the code it processes between the lock and unlock should be as quick and effecient as possible so it does not create a major traffic jam.
Because my thinking is this "object" I am referring to as being in memory, most likely will play a big role in answering the question about getting the requests in a "one at a time" situation it may be the focus of the question is more like how would I create "an object" and store it in memory to be quickly and easily accessed?
And even more generically does this even sound like I am on the right track
I think the topic of "communication to and from users" will need to be a completly different thread.
I have a search option which a person can use a multi select listbox. I have it coded so it would loop through to see if its selected or not. I also have a stored procedure where the sql statement is coded for the select statement. For some reason, its not populating my gridview. Where am I doing wrong? Below is the code and stored procedure. [Code]....
I've a gridview with 6 coloums. First col is dropdown list and rest are text boxes.aspx page looks like this
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I've a created a class and bounded to grid view in my Business LayerThe dropdown list was bounded to another table by using gvExpense_RowDataBound eventNo.of rows in gridview depends on no. of rows in expensetype table
I'm just wondering if anyone has come across a good, easy method for updating a SQL Server 2000 DB table using the edit feature in GridView. The catch here is that I need it to encrypt, send to database, then decrypt when the page calls it to be displayed. I have successfully implemented an insert method using FormView with encryption. For some reason, I just can't seem to figure out the edit/update.
i need bind data from gridview to database.. i dont know how to do it.. i doing student attenance detail mini project.. gridview show total class student name , roll no, and department.. check box for attenance .. if i tick in check box bind data "student present" not tick bind data student absent.
I am using Visual Web Developer (VWD)and I dragged in i.e created a Gridview. In the codebehind of the page, I will like to declare an sqldatasource and get data from a database using the sqldatasource and then bind the sqldatasource to the Gridview. PS: I know how to drag-in an sqldatasource and attach it to the gridview using VWD but this time, I want to do this declaratively in the codebehind.
I want to get data from the database and display it in gridview. The gridview should be editable. Meaning the user can add, edit and delete items/rows in the gridview. Everytime the user adds/updates/deletes an item, the gridview is also updated. However, these changes will only be saved to the database once the Save button is clicked.
i'm currently doing a shopping website. The customer will have to selected the item they want to buy and it will appear in the detail view when they click add in the grid view. I need the info inside the detail view to be insert into a database call Orderlist.
i've try using INSERT INTO OrderList (ProductName, Price,) VALUES (@ProductName, @Price) but it don't seems to work.
Was it because i can't insert it like this as it is detailview? This method can work if is Textbox instead of detailview.
I am developing a project using Visual Web Developer 2008 express. I am displaying the excel data set into Grid view, each execl sheet having 400 records, i want save this whole grid view data into mysql table with single clickToacheive above task shall i need to create a table in mysql database having same excel names.
I have a MySQL database, and I'm currently creating an ASP.NET website to update data in it. I'm currently having trouble changing the data with GridView. Reading through various posts on this site, i think I've got a problem with binding the data, but I'm not sure how to accomplish this with MySQL database. My c# code is as follows:
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My asp code is as follows:
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At the moment I'm getting an error about the "trash" data, it's an Int32 field, but I'm not sure how to handle that.
I m developing attendence report sheet into the gridview.My gridview content the textbox which i want load the data from the database on page load event.Plz anyone help me how can i set the textbox value from database.
