subsonic3 - How do you update multiple rows in subsonic? -

I want to update several rows in my SQL database using SubSonic but how do I understand how to do it is. What is the easiest way to do this?

Something like this would happen in SQL: Update table SET rowItem = 4 WHERE row_item = 3

new (database name) db () Update & lt; CellName & gt; () .set (x = & gt; x.rowItem == 4). Where (x = & gt; X.row_item == 3) .Execute ();