Updating a record using SQL in VB.NET

Exception thrown: 'System.InvalidOperationException' in System.Data.dll

Try

    Dim rows_affected As Integer

    Using Conn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\UserInfo.mdb")
        Using cmd As New OleDbCommand("UPDATE table1 SET TotalCorrect =  @TotCorr , TotalAnswered = @TotAnswered , TotalAcc = @TotAcc WHERE username = @userName", Conn)


            cmd.Parameters.Add("@TotCorr", SqlDbType.Int).Value = USerInfoDataArray(0, 0)
            cmd.Parameters.Add("@TotAnswered", SqlDbType.Int).Value = USerInfoDataArray(0, 1)
            cmd.Parameters.Add("@TotAcc", SqlDbType.Int).Value = USerInfoDataArray(0, 2)
            cmd.Parameters.Add("@username", SqlDbType.Text).Value = LoginForm.txtUsername.Text

            Conn.Open()
            rows_affected = cmd.ExecuteNonQuery()
            MessageBox.Show(rows_affected)
        End Using
    End Using
Catch ex As OleDbException
    MessageBox.Show(ex.ToString())
End Try