prevent concurrent access to sql sever database

Question

0.00/5 (No votes)

See more:

I have an asp .net page which shows a gridview that embed a checkbox column. the asp .net page include a two buttons with text "succed" "fail".
The problem is that the gridview which lists all students that have passed an exam can be accessed by two managers who will for example check the check box of the same row and one click "succed" and the other "fail". so i ll have a concurrent access in the database. so is there any way to prevent that in the database.
Note that the web page includes also two other gridview one first one lists the students who succeded in the exam and the second one lists the student which fails.

Posted 28-Jun-12 4:03am

elidrissi.amine1

Add a Solution

2 solutions

Solution 1

If you can't use transactions for some reason, I would suggest adding a "last modified" timestamp field to each row of the table. When you generate the asp page to send to the user, add the last modified timestamp as a hidden field. If the user submits any form on the page, you can use this field to test against the current state of the database. If the timestamps match, then no concurrent access has occurred. Otherwise, report the problem.

Posted 28-Jun-12 4:22am

afourney

Updated 28-Jun-12 4:23am

v2

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Abdul Quader Mamun · Accepted Answer · 2012-06-28T04:31:00

Thank you for your question.

You can solve this problem by reading the following likns:

Implementing Optimistic Concurrency with the SqlDataSource
http://www.asp.net/data-access/tutorials/implementing-optimistic-concurrency-with-the-sqldatasource-cs

For ADO.NET, please see:

Concurrency Control in ADO.NET
http://msdn.microsoft.com/en-us/library/22hhd212.aspx

Thanks,
Mamun