Webmatrix Example gives System.NullReferenceException

Hi, I was attempting to implement an example in Webmatrix (editable.aspx). This page is an editable datagrid with update, delete & Add New row features. My issue is when trying to add a row to the table. My table, MyTablehas two columnus MyTableID, MyTableData. I receive the following error:

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.


Here is the CODE:


' add new row to the end of the dataset after binding


' first get the data


Dim myConnection As New OledbConnection(ConnectionString)


Dim myCommand As New OledbDataAdapter(SelectCommand, myConnection) Dim ds As New DataSet()


myCommand.Fill(ds) ' add a new blank row to the end of the data


Dim rowValues As Object() = {"", ""}


ds.Tables("AssetCategories").Rows.Add(rowValues) '<-- ERROR HERE
My question is how to take care of the NULL error? Thanks for any help. Arnold