Saving back to database

When I using Express Edition, When I make a connectiont o the database it automatically lists the following code to save & update database

Me.Validate()

Me.TaskBindingSource.EndEdit()

Me.TaskTableAdapter.Update(Me.Time_ManagementDataSet.Task)

This update some of the forms but, I created another table called notes and it generated the same code for that table, but the problem is when I change information in the form view it throws an expection, saying it needs an valid update command. Can you help, as the other forms work.

Noko