Can gridview retain it's data after postback

This question is based on http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/Q_28373722.html

I press a button to populate a gridview.  When I press the button again with different parameters, I want the new results to be added as an extra row to the gridview.  I don't want the new results to replace the old.

The gridview is populated by passing parameters to a stored procedure.  Obviously only one set of parameters can be passed at a time.

I'm using vb2008 with asp.net 3.5
AlHal2Asked:
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Bob LearnedCommented:
What are you using for the data source for the GridView?  If you are using something like the SqlDataSource, then it gets to be challenging.  If you are binding to a list structure or DataTable, then it should be easier.
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AlHal2Author Commented:
I think I've solved the problem.
I've had a table created which will store the data that gets sent to the gridview.  The stored procedure updates the table and then runs a select query which is sent to the gridview.
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Bob LearnedCommented:
What are you doing with the table when the page posts back?
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AlHal2Author Commented:
I've incorporated JamesBurger's solution to http://www.experts-exchange.com/Programming/Languages/.NET/Q_28375965.html

The stored procedure does what's necessary then displays the updated table.
That seems to work.
On the other post you talke about some database operations being synchronous, but not all.  Please could you elaborate?
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AlHal2Author Commented:
It works.
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