My SqlDependency form responses slowly

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SQL-Server-2005

Dear mentors,

i am monitoring two sqlserver tables from one form and showing those data in two different datagrids and few labels. Problem is the form responses slowly i.e. if i move it.

did i mistake anything? what should be the smart policy to use sqldependency?

SKPaul

Posted 26-May-11 23:50pm

Saumitra Kumar Paul

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Tom Deketelaere · Accepted Answer · 2011-05-26T23:56:00

Solution 1

By 'form responses slowly i.e. if I move it' do you mean when dragging the form across the screen?
If so I'm guessing you are constantly (or at least several times a minute) polling the database and processing the data.

This causes the GUI thread to be 'busy'.

To avoid this you'll have to use threading and pass the data to the form.

Look in to threading and delegates (do some research if your not familiar with it).

Other than that the only way would be to prevent any user action while you are processing the data (but that's not very user-friendly).

Posted 26-May-11 23:56pm

Tom Deketelaere

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Saumitra Kumar Paul 27-May-11 5:59am

there are threads. But still i face that probs. any thing more? thank you for your reply,

Tom Deketelaere 27-May-11 7:30am

Without a better explanation of what your doing and how exactly (some code snippets) I couldn't say.

Saumitra Kumar Paul 27-May-11 6:02am

Is there any method to set the database polling rate per minute?