键入的数据集不会在列添加时更新

I have a datagridview that I'm using in Visual Studio 2008 for a winforms app. The datagridview is bound to a typed dataset. I added a few columns to the table referenced from the typed dataset. So, i open the typed dataset and reconfigured the datatable to show the new columns. When I do a preview, the columns are there. However, when i view the datagridview, there are no changes. I even rebound an no changes. I also tried creating a new table adapter and it doesn't even appear when selected sources for teh datagridview?I have a datagridview that I'm using in Visual