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How to get the display to update?

I've got some (Windows Application) code where I am doing a lot of database updates and then updating some data in the application display. However, when the machine gets busy, it doesn't display any updates until the database updates are FULLY finished. What's weird is it's just a bunch of single ExecuteScalar operations inside a loop. Each ExecuteScalar takes possibly a tenth of a second, so it's not like the code is blocking waiting on the SQL server to respond.

Any ideas? Probably easy, just not seeing the light.

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