Reload tableview source do not works for me

I'm trying to reload an already populated tableview. I approached like this (table is my UITableView): if (table != null && table.Source != null) { table.Dispose (); } if (tableItems != null) { table.Source = new TableSource (tableItems, this); table.ReloadData (); }

but the result is not working. I have like a frozen table. I can click over a row but exceptions raise because in my tablesource class objects are nulled referenced. Can anyone put me in the right way to do: 1 .complete reload of tableview 2. update single tableview row Thanks, Max