Retrieve data from database every few seconds?

i need to retrieve data from database every few seconds, display them.

i use C#. When i press one button, the data should be retrieved every few seconds,the data开发者_运维知识库 is then displayed in a form, any idea how to do it?

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If you are going to do this, please.. please read this:

Walkthrough: Adding a Local Database Cache to an N-Tier Application

As others have mentioned, you can use a Timer for this. Remember that you Only want to ask the database for new data when there actually is new data to fetch.

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Create a timer in your C# application that will call a stored procedure on your database to retrieve the results into a DataSet.

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Use a Timer to periodically execute your query and update the UI.

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You should use Timer.

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I assume this is a windows forms application? If so, what you could do is add a timer to the form with a tick time of X seconds, each time it elapses you can query and update the display with the new records.

To start the process you simply start the timer.

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Use a Backgroundworker to retrieve data, then use a message to the GUI thread to update in the form