How can I prevent a GridView from opening when the page is firstentered ?

[Roberto Kohler]

How can I prevent a GridView/SQLDataSource from opening when the page is
firstentered ?
I want to wait until the user clicks a button to open the sqlSataSource and
the grid.

I want to do something like:

If Page.IsPostBack Then
' Open the sqlSataSource and the grid:
' - set the appropriate values for the SQLDataSource parameters
' - open the sqlSataSource
' - open the GridView1
else
' do not open the grid or the sqlSataSource
end if

 

[Keith Patrick]

Set CancelSelectOnNullParameter="true" on the datasource, put in a dummy
null param, and programmatically remove it when you want to do a real
select.

 

[Roberto Kohler]

That worked! Thanks.