title: Flex: update datagrid dataProvider cause the datagrid's visible property to be set to to TRUE
body: <p>I notice this behavior on the Flex 4's datagrid, where I set the gird's visible to FALSE. As I update the grid's dataProvider data, for example update an entity's property in the collection, the grid will become VISIBLE again.</p>
  
  <p>is this the default behavior of a datagird in Flex? How do i disable it? </p>