如下程序
 
  Private Sub Btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btndelete.Click
        Dim dgrdelete As DialogResult
        Try
            dgrdelete = MessageBox.Show("delete this record?", "confirm delete", MessageBoxButtons.YesNo)
            If dgrdelete = DialogResult.Yes Then
                With mybm
                    .RemoveAt(.Position)
                End With
                Dim sqlcommand As New SqlCommandBuilder(adapter)
                adapter.Update(dset, "aa")
                dset.AcceptChanges()
            End If
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub

运行时出现如下错误
    对于不返回任何键列信息的seletecommand不支持deletecommand的动态sql生成
怎么解决阿

adaper.update(dset.aa)试看看