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How to receive a notification of a data change in c# from SQL Server 2005?

Hi,

I have a .NET (v1.1) c# console application that accesses data in an SQL Server 2005 database, via SQL.

I want to have a mechanism to receive a notification (event? trigger?) when something changes in a given table so I can reload it. Whats the easiest way to code that? Obviously I could just poll or something like that - but I'm sure there will be a nice solution supported by my combination of .NET 1.1 SQLConnection classes and SQL Server 2005 backend.

Whats the best/easiest way to achieve that?

thanks - reddal

Éric Moreau

using ADO.Net 2.0 and SQL 2005, you can use the notification: http://msdn.microsoft.com/en-us/library/ms379594.aspx

can you migrate to .Net 2.0?

Auric1983

Create a second table with the following columns

Tablename (varchar) , lastupdated (datetime), complete (bit)

You could create a SQL update trigger
on the table you want to monitor to insert
a record into the "monitor table" with the name of the table, the date/time of the update and set the complete field to 0

You'd then be able to query that monitoring table for "action required"

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elimesika

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reddal

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> emoreau: can you migrate to .Net 2.0?

Yes that is planned (to 3.5 in fact) - but not immediately. Do you know if there is a .NET 1.1 solution?

> Auric1983:

I would still have to poll the monitoring table at regular intervals using your solution I think? I'm hoping to find a way to avoid that.

- reddal

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