.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
david stephan
Gaurav Pal
Post New Web Links

How to judge changed data and update data in database

Posted By:      Posted Date: October 08, 2010    Points: 0   Category :ASP.Net

For my case, I use linq to sql to select data from database.

I want to do the edit fuction which has 3 steps.

1. load all the data first

2. enter the button then save changed content not all to database.

I am totally new to asp.net. Could someone tell me that how to save only changed data using linq?


Thank you






View Complete Post

More Related Resource Links

The number of calls to the Changed event for a single update in the data exceeded the maximum limit.


Dear All,

We have hit the big limit of 16 change events per single update.  Is there any way to extend this to say 25, we are not using infinate loops or anything.

Alternatively, is it possible to disable some change events when values are updated?


William Man

Retrieving changed/updated data from all tables in database



I'm looking for some advise on how I could solve the problem I face, I have various instances of sqlexpress 2005 in different remote locations which are not accessible via internet vpn etc as they are all in corporate networks that will not allow access. What I think I need to do is create some sort of process/service that can be installed on the client and run at a set time/date that collects all the data from theses instances and then push the changes to our remote instance of sql server. Can anyone possibly point me in the right direction of various technologies I should be looking into to solve this problem. All clients would be running windows XP. I have been searching for a few day's but I can't find anything to get me going. If this is not the right forum for this type of question can you suggest any?


Thank you.

Linq - add data to database then email user the details


Hi all

I'm not sure how to structure the code for this but what I want to do is be able to add data to a database, and once this has completed successfully, then email the user to say the details have been added successfully to the database.

I need to:

1. Check that the relevant data has been added into the database then

2. Email the details of the relevant data when completed. 


Thanks in advance for your help,




huge number of data from database ... so how to minimize load time


Hi ...

I have used the above method to configure my crystal report ...

Its working fine , But i have huge number of data in database ....

So , it take long time to load the report ...

So , i have decided to show only the last 50 records inserted into the database , not all the 500 records to be loaded every time.

Plz help me with this issue  ...


Also , Plz explain me abt index legend in crystal report.

Saving textbox data to MySql database in asp.net


Hi dear coders

though a very simple question to ask, but please tell me how to save and retrieve data in/from my textboxes to/from database (MYSQL) on submit button click.

i know its a very simple task but i cant make it done, so i request you to please send me some working example link or post any helpful code here in asp.net

i will be highly thankful for any kind help from you geniuses.



Need Oracle Data Provider .CS File for Oracle 10g Database connection !



I need a 'Wrapper.cs' file which takes care of the Database connection ( Oracle 10g) where

i can just call the method with my SQL Query


Gridview1.DataSource = SampleWrapper.ExecuteDatatable("THE SQL QUERY");


Plz Post the link if there is any open source !    

Data Points: Windows Azure Table Storage - Not Your Father's Database


Let go of your traditional relational database thinking if you want to understand how Windows Azure Table storage works, says Julie Lerman. Luckily for you, she's done the hard work to grasp the new concepts and help you get up to speed.

Julie Lerman

MSDN Magazine July 2010

SQL Data Services: The Relational Database of the Azure Services Platform


This article shows you the new face of SQL Data Services, explores its architecture, and shows how it is truly an extension of SQL Server in the cloud.

David Robinson

MSDN Magazine August 2009

Under the Table: How Data Access Code Affects Database Performance


In this article, the author delves into some commonly used ways of writing data access code and looks at the effect they can have on performance.

Bob Beauchemin

MSDN Magazine August 2009

Data Joins The Team: Introducing Visual Studio 2005 Team Edition for Database Professionals


Here Brian Randell presents everything you need to know to get started with Visual Studio 2005 Team Edition for Database Professionals.

Brian A. Randell

MSDN Magazine February 2007

Data Deployment: Streamline Your Database Setup Process with a Custom Installer


Database setup can be a tough and time-consuming process and sometimes fall victim to human error. Microsoft Installer or InstallShield can help, as can your own custom installer. In this article, the author tackles one approach to writing database installers and demonstrates the process with a working code sample.

Alek Davis

MSDN Magazine September 2004

Metadata: Create a Database Schema Repository with Meta Data Services in SQL Server 2000


SQL Server 2000 Meta Data Services is a repository technology that stores and manages metadata for SQL Server. Instead of building database schemas over and over, Meta Data Services allows you to freeze an entire schema for use in other projects. You can also use these schemas for training, testing, or debugging. In this article, the authors will review the various components of Meta Data Services and show how it can be programmed using a Visual Basic client, XML, and XSLT. They will also show you how to manage and manipulate your metadata by generating a simple database schema using a SQL Server repository.

Alok Mehta and Ricardo Rodriguez

MSDN Magazine May 2003

SQL Server CE: New Version Lets You Store and Update Data on Handheld Devices


Handheld device users need to be able to synchronize with a main data store when it's convenient and, preferably, when the back-end database server isn't busy. SQL Server 2000 Windows CE Edition allows you to build a traveling data store that can be displayed and run on a variety of devices. SQL Server CE supports a subset of the full SQL Server package, and can be used as a standalone server or in tandem with SWL Server and IIS. The architecture of SQL Server CE, along with data manipulation, synchronization, and connectivity issues, are discussed in this article. Topics such as making your data public, choosing the right type of replication, and handling errors are also covered.

Paul Yao and David Durant

MSDN Magazine June 2001

Writing Data to database with jQuery Forms, ASMX Webservice, & JSON - help!



Can someone point me in the right direction on how to submit data from a jQuery form to a ASMX webservice? I have gotten everything on the form ready to be submitted to the database and now I am stuck on how to send it over using $.ajax(). Everything I have read tells me how to get data from a webservice and display it with jQuery, but not the other direction nor how to access the json data within the within the webservice service(similar to a Request.Form approach with ASP.NET forms).

In other words: 

1. What do I need to do to my webservice to make sure it can receive data from the jQuery form. 

2. What do I need to do in jQuery to receive an acknowledgement the save on the server side was successful. 

I can explain more if need be, but if there is a comprehensive tutorial on not only reading, but also WRITING data with jQuery, JSON, etc. I would love to get pointed in that direction. 

insert the data in database using gridview jquery



I want to use gridview and bind the data and after i want insert the data in database using jquery,

below the link i got for delete


but i want the sample example for insert  row from gridivew and add the database.


need your help regarding table and database.. without data lose



I have a table like this in database

ItemNo ItemName Qty  

001       A               50       

002       A               20      

003       B               50  

004       C               60      

005       D               40 

006       E               90      

upto it has some 3000 rows in table..

Now what my problem is i have one more field in mydevelopment PC let us consider another column Category

I need to update this column to my client pc without losing 3000 data from table which already exist...

How to do...?

Entity Data Model and database view returning the same columns as there are in a table


When adding a stored procedure into the Entity Data Model I can select whether the procedure returns a scalar, a (new) complex type or one of the entity types I already defined. 

How do I do something similar for a view?

I mean assuming I have a view like this

CREATE VIEW FilteredFoos as SELECT Foo.* FROM Foo join ... WHERE ...

(that is a view that implements some involved filtering, but returns all columns from one table) how do I add it to the project so that I can use the entity set, but get the Foo objects, not some new FilteredFoo objects.

var foos = myDB.FilteredFoos.Include("Bar").ToList();

foreach (Foo foo in foos) { ...

Thanks, Jenda

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend