adding and deleting records from DataGridView programatically

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VB

In vb.net2005 i want to add and delete records programatically from DataGridView using datasource from MSAccess 2007 , and database contains fields based on date/time and yes/no .

for deleting rows i am using

Dim cmd As OleDbCommandBuilder
cmd = New OleDbCommandBuilder(da)
Dim dt As New DataTable
dt = ds.Tables(0)
dt.Rows(DataGridView1.SelectedRows(0).Index()).Delete()
da.Update(dt)
ds.AcceptChanges()

and to add records i am using

Dim cmd As OleDbCommandBuilder
Dim changes As DataSet
cmd = New OleDbCommandBuilder(da)
changes = ds.GetChanges()
If changes IsNot Nothing Then
    da.Update(ds.Tables(0))
End If
ds.AcceptChanges()

both are working without date and yes/no fields ,but when these included then i am getting error,
can i know how to add & delete when date included

thanks and regards